Articles | Volume 25, issue 19
https://doi.org/10.5194/acp-25-12657-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-12657-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Toxic dust emission from drought-exposed lake beds – a new air pollution threat from dried lakes
Qianqian Gao
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
Guochao Chen
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Xiaohui Lu
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
Jianmin Chen
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Xiaofei Wang
CORRESPONDING AUTHOR
Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai 200433, China
Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
Fudan Zhangjiang Institute, Shanghai 201203, China
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Atmos. Chem. Phys., 25, 7959–7972, https://doi.org/10.5194/acp-25-7959-2025, https://doi.org/10.5194/acp-25-7959-2025, 2025
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Atmos. Chem. Phys., 25, 4767–4783, https://doi.org/10.5194/acp-25-4767-2025, https://doi.org/10.5194/acp-25-4767-2025, 2025
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Jianing Dai, Guy P. Brasseur, Mihalis Vrekoussis, Maria Kanakidou, Kun Qu, Yijuan Zhang, Hongliang Zhang, and Tao Wang
Atmos. Chem. Phys., 24, 12943–12962, https://doi.org/10.5194/acp-24-12943-2024, https://doi.org/10.5194/acp-24-12943-2024, 2024
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Atmos. Chem. Phys., 24, 12775–12792, https://doi.org/10.5194/acp-24-12775-2024, https://doi.org/10.5194/acp-24-12775-2024, 2024
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Atmos. Chem. Phys., 24, 12323–12340, https://doi.org/10.5194/acp-24-12323-2024, https://doi.org/10.5194/acp-24-12323-2024, 2024
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Jianing Dai, Guy P. Brasseur, Mihalis Vrekoussis, Maria Kanakidou, Kun Qu, Yijuan Zhang, Hongliang Zhang, and Tao Wang
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Atmos. Chem. Phys., 23, 2983–2996, https://doi.org/10.5194/acp-23-2983-2023, https://doi.org/10.5194/acp-23-2983-2023, 2023
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Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-716, https://doi.org/10.5194/acp-2022-716, 2022
Revised manuscript not accepted
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Chaoyang Xue, Can Ye, Jörg Kleffmann, Chenglong Zhang, Valéry Catoire, Fengxia Bao, Abdelwahid Mellouki, Likun Xue, Jianmin Chen, Keding Lu, Yong Zhao, Hengde Liu, Zhaoxin Guo, and Yujing Mu
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Summertime measurements of nitrous acid (HONO) and related parameters were conducted at the foot and the summit of Mt. Tai (1534 m above sea level). We proposed a rapid vertical air mass exchange between the foot and the summit level, which enhances the role of HONO in the oxidizing capacity of the upper boundary layer. Kinetics for aerosol-derived HONO sources were constrained. HONO formation from different paths was quantified and discussed.
Wei Sun, Yuzhen Fu, Guohua Zhang, Yuxiang Yang, Feng Jiang, Xiufeng Lian, Bin Jiang, Yuhong Liao, Xinhui Bi, Duohong Chen, Jianmin Chen, Xinming Wang, Jie Ou, Ping'an Peng, and Guoying Sheng
Atmos. Chem. Phys., 21, 16631–16644, https://doi.org/10.5194/acp-21-16631-2021, https://doi.org/10.5194/acp-21-16631-2021, 2021
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We sampled cloud water at a remote mountain site and investigated the molecular characteristics. CHON and CHO are dominant in cloud water. No statistical difference in the oxidation state is observed between cloud water and interstitial PM2.5. Most of the formulas are aliphatic and olefinic species. CHON, with aromatic structures and organosulfates, are abundant, especially in nighttime samples. The in-cloud and multi-phase dark reactions likely contribute significantly.
Men Xia, Xiang Peng, Weihao Wang, Chuan Yu, Zhe Wang, Yee Jun Tham, Jianmin Chen, Hui Chen, Yujing Mu, Chenglong Zhang, Pengfei Liu, Likun Xue, Xinfeng Wang, Jian Gao, Hong Li, and Tao Wang
Atmos. Chem. Phys., 21, 15985–16000, https://doi.org/10.5194/acp-21-15985-2021, https://doi.org/10.5194/acp-21-15985-2021, 2021
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ClNO2 is an important precursor of chlorine radical that affects photochemistry. However, its production and impact are not well understood. Our study presents field observations of ClNO2 at three sites in northern China. These observations provide new insights into nighttime processes that produce ClNO2 and the significant impact of ClNO2 on secondary pollutions during daytime. The results improve the understanding of photochemical pollution in the lower part of the atmosphere.
Letizia Abis, Carmen Kalalian, Bastien Lunardelli, Tao Wang, Liwu Zhang, Jianmin Chen, Sébastien Perrier, Benjamin Loubet, Raluca Ciuraru, and Christian George
Atmos. Chem. Phys., 21, 12613–12629, https://doi.org/10.5194/acp-21-12613-2021, https://doi.org/10.5194/acp-21-12613-2021, 2021
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Biogenic volatile organic compound (BVOC) emissions from rapeseed leaf litter have been investigated by means of a controlled atmospheric simulation chamber. The diversity of emitted VOCs increased also in the presence of UV light irradiation. SOA formation was observed when leaf litter was exposed to both UV light and ozone, indicating a potential contribution to particle formation or growth at local scales.
Zhenzhen Wang, Di Wu, Zhuoyu Li, Xiaona Shang, Qing Li, Xiang Li, Renjie Chen, Haidong Kan, Huiling Ouyang, Xu Tang, and Jianmin Chen
Atmos. Chem. Phys., 21, 12227–12241, https://doi.org/10.5194/acp-21-12227-2021, https://doi.org/10.5194/acp-21-12227-2021, 2021
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This study firstly investigates the composition of sugars in the fine fraction of aerosol over three sites in southwest China. The result suggested no significant reduction in biomass burning emissions in southwest Yunnan Province to some extent. The result shown sheds light on the contributions of biomass burning and the characteristics of biogenic saccharides in these regions, which could be further applied to regional source apportionment models and global climate models.
Peng Wang, Juanyong Shen, Men Xia, Shida Sun, Yanli Zhang, Hongliang Zhang, and Xinming Wang
Atmos. Chem. Phys., 21, 10347–10356, https://doi.org/10.5194/acp-21-10347-2021, https://doi.org/10.5194/acp-21-10347-2021, 2021
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Ozone (O3) pollution has received extensive attention due to worsening air quality and rising health risks. The Chinese National Day holiday (CNDH), which is associated with intensive commercial and tourist activities, serves as a valuable experiment to evaluate the O3 response during the holiday. We find sharply increasing trends of observed O3 concentrations throughout China during the CNDH, leading to 33 % additional total daily deaths.
Lian Zong, Yuanjian Yang, Meng Gao, Hong Wang, Peng Wang, Hongliang Zhang, Linlin Wang, Guicai Ning, Chao Liu, Yubin Li, and Zhiqiu Gao
Atmos. Chem. Phys., 21, 9105–9124, https://doi.org/10.5194/acp-21-9105-2021, https://doi.org/10.5194/acp-21-9105-2021, 2021
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In recent years, summer O3 pollution over eastern China has become more serious, and it is even the case that surface O3 and PM2.5 pollution can co-occur. However, the synoptic weather pattern (SWP) related to this compound pollution remains unclear. Regional PM2.5 and O3 compound pollution is characterized by various SWPs with different dominant factors. Our findings provide insights into the regional co-occurring high PM2.5 and O3 levels via the effects of certain meteorological factors.
Rui Li, Yilong Zhao, Hongbo Fu, Jianmin Chen, Meng Peng, and Chunying Wang
Atmos. Chem. Phys., 21, 8677–8692, https://doi.org/10.5194/acp-21-8677-2021, https://doi.org/10.5194/acp-21-8677-2021, 2021
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Based on a random forest model, the strict lockdown measures significantly decreased primary components such as Cr (−67 %) and Fe (−61 %) in PM2.5 (p < 0.01), whereas the higher relative humidity (RH) and NH3 level and the lower air temperature (T) remarkably enhanced the production of secondary aerosol including SO42− (29 %), NO3− (29 %), and NH4+ (21 %) (p < 0.05). The natural experiment suggested that the NH3 emission should be strictly controlled.
Jinlong Ma, Juanyong Shen, Peng Wang, Shengqiang Zhu, Yu Wang, Pengfei Wang, Gehui Wang, Jianmin Chen, and Hongliang Zhang
Atmos. Chem. Phys., 21, 7343–7355, https://doi.org/10.5194/acp-21-7343-2021, https://doi.org/10.5194/acp-21-7343-2021, 2021
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Due to the reduced anthropogenic emissions during the COVID-19 lockdown, mainly from the transportation and industrial sectors, PM2.5 decreased significantly in the whole Yangtze River Delta (YRD) and its major cities. However, the contributions and relative importance of different source sectors and regions changed differently, indicating that control strategies should be adjusted accordingly for further pollution control.
Mengyuan Zhang, Arpit Katiyar, Shengqiang Zhu, Juanyong Shen, Men Xia, Jinlong Ma, Sri Harsha Kota, Peng Wang, and Hongliang Zhang
Atmos. Chem. Phys., 21, 4025–4037, https://doi.org/10.5194/acp-21-4025-2021, https://doi.org/10.5194/acp-21-4025-2021, 2021
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We studied changes in air quality in India induced by the COVID-19 lockdown through both surface observations and the CMAQ model. Our results show that emission reductions improved the air quality across India during the lockdown. On average, the levels of PM2.5 and O3 decreased by 28 % and 15 %, indicating positive effects of lockdown measures. We suggest that more stringent and localized emission control strategies should be implemented in India to mitigate air pollutions.
Xiaona Shang, Ling Li, Xinlian Zhang, Huihui Kang, Guodong Sui, Gehui Wang, Xingnan Ye, Hang Xiao, and Jianmin Chen
Atmos. Meas. Tech., 14, 1037–1045, https://doi.org/10.5194/amt-14-1037-2021, https://doi.org/10.5194/amt-14-1037-2021, 2021
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Oxidative stress can be used to evaluate not only adverse health effects but also adverse ecological effects. However, little research uses eco-toxicological assay to assess the risks posed by particle matter to non-human biomes. One important reason might be that the concentration of toxic components of atmospheric particles is far below the high detection limit of eco-toxic measurement. To solve the rapid detection problem, we extended a VACES for ecotoxicity aerosol measurement.
Yujiao Zhu, Likun Xue, Jian Gao, Jianmin Chen, Hongyong Li, Yong Zhao, Zhaoxin Guo, Tianshu Chen, Liang Wen, Penggang Zheng, Ye Shan, Xinfeng Wang, Tao Wang, Xiaohong Yao, and Wenxing Wang
Atmos. Chem. Phys., 21, 1305–1323, https://doi.org/10.5194/acp-21-1305-2021, https://doi.org/10.5194/acp-21-1305-2021, 2021
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This work investigates the long-term changes in new particle formation (NPF) events under reduced SO2 emissions at the summit of Mt. Tai during seven campaigns from 2007 to 2018. We found the NPF intensity increased 2- to 3-fold in 2018 compared to 2007. In contrast, the probability of new particles growing to CCN size largely decreased. Changes to biogenic VOCs and anthropogenic emissions are proposed to explain the distinct NPF characteristics.
Junjun Deng, Hao Guo, Hongliang Zhang, Jialei Zhu, Xin Wang, and Pingqing Fu
Atmos. Chem. Phys., 20, 14419–14435, https://doi.org/10.5194/acp-20-14419-2020, https://doi.org/10.5194/acp-20-14419-2020, 2020
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One-year source apportionment of BC aerosols in a coastal city in China was conducted with the light-absorption observation-based method and source-oriented model. Source contributions identified by the two source apportionment methods were compared. Temporal variability, potential sources and transport pathways of BC from fossil fuel and biomass burning were characterized. Significant influence of biomass burning in North and East–Central China on BC in the region was highlighted.
Jiarong Li, Chao Zhu, Hui Chen, Defeng Zhao, Likun Xue, Xinfeng Wang, Hongyong Li, Pengfei Liu, Junfeng Liu, Chenglong Zhang, Yujing Mu, Wenjin Zhang, Luming Zhang, Hartmut Herrmann, Kai Li, Min Liu, and Jianmin Chen
Atmos. Chem. Phys., 20, 13735–13751, https://doi.org/10.5194/acp-20-13735-2020, https://doi.org/10.5194/acp-20-13735-2020, 2020
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Based on a field study at Mt. Tai, China, the simultaneous variations of cloud microphysics, aerosol microphysics and their potential interactions during cloud life cycles were discussed. Results demonstrated that clouds on clean days were more susceptible to the concentrations of particle number, while clouds formed on polluted days might be more sensitive to meteorological parameters. Particles larger than 150 nm played important roles in forming cloud droplets with sizes of 5–10 μm.
Zhihao Shi, Lin Huang, Jingyi Li, Qi Ying, Hongliang Zhang, and Jianlin Hu
Atmos. Chem. Phys., 20, 13455–13466, https://doi.org/10.5194/acp-20-13455-2020, https://doi.org/10.5194/acp-20-13455-2020, 2020
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Meteorological conditions play important roles in the formation of O3 and PM2.5 pollution in China. O3 is most sensitive to temperature and the sensitivity is dependent on the O3 chemistry formation or loss regime. PM2.5 is negatively sensitive to temperature, wind speed, and planetary boundary layer height and positively sensitive to humidity. The results imply that air quality in certain regions of China is sensitive to climate changes.
Cited articles
Alfaro, S. C.: Influence of soil texture on the binding energies of fine mineral dust particles potentially released by wind erosion, Geomorphology, 93, 157–167, https://doi.org/10.1016/j.geomorph.2007.02.012, 2008.
Alfaro, S. C., Gaudichet, A., Gomes, L., and Maille, M.: Modeling the size distribution of a soil aerosol produced by sandblasting, J. Geophys. Res.-Atmo., 102, 11239–11249, https://doi.org/10.1029/97jd00403, 1997.
Alizade Govarchin Ghale, Y., Tayanc, M., and Unal, A.: Dried bottom of Urmia Lake as a new source of dust in the northwestern Iran: Understanding the impacts on local and regional air quality, Atmos. Environ., 262, 118635, https://doi.org/10.1016/j.atmosenv.2021.118635, 2021.
Attah, R., Kaur, K., Perry, K. D., Fernandez, D. P., and Kelly, K. E.: Assessing the oxidative potential of dust from great salt Lake, Atmos. Environ., 336, 120728, https://doi.org/10.1016/j.atmosenv.2024.120728, 2024.
Bai, P., Wang, Y., Zhang, H., Zhang, X., Zhang, L., Matsuki, A., Nagao, S., Chen, B., and Tang, N.: Characteristic variation of particulate matter-bound polycyclic aromatic hydrocarbons (PAHs) during Asian dust events, based on observations at a Japanese background site, Wajima, from 2010 to 2021, Atmosphere, 14, 1519, https://doi.org/10.3390/atmos14101519, 2023.
Beeton, A. M.: Large freshwater lakes: present state, trends, and future, Environ. Conserv., 29, 21–38, https://doi.org/10.1017/S0376892902000036, 2002.
Boylan, J. W. and Russell, A. G.: PM and light extinction model performance metrics, goals, and criteria for three-dimensional air quality models, Atmos. Environ., 40, 4946–4959, https://doi.org/10.1016/j.atmosenv.2005.09.087, 2006.
Brady, N. C., Weil, R. R., and Weil, R. R.: The nature and properties of soils, Prentice Hall Upper Saddle River, NJ, ISBN 978-0-13-227939-0, 2008.
Buccolieri, A., Buccolieri, G., Dell'Atti, A., Perrone, M. R., and Turnone, A.: Natural sources and heavy metals, Anna. Chim., 96, 167–181, 2006.
Beijing Municipal Environmental Protection Bureau: Environmental Site Assessment Guideline (DB11/T 656–2009), Beijing Local Standard, Beijing, China, 2009.
Chen, J., Li, Y., Shu, L., Fang, S., Yao, J., Cao, S., Zeng, B., and Yang, M.: The influence of the 2022 extreme drought on groundwater hydrodynamics in the floodplain wetland of Poyang Lake using a modeling assessment, J. Hydrol., 626, 130194, https://doi.org/10.1016/j.jhydrol.2023.130194, 2023.
Delistraty, D.: Toxic equivalency factor approach for risk assessment of polycyclic aromatic hydrocarbons, Toxicol. Environ. Chem., 64, 81–108, 1997.
Farebrother, W., Hesse, P. P., Chang, H. C., and Jones, C.: Dry lake beds as sources of dust in Australia during the Late Quaternary: A volumetric approach based on lake bed and deflated dune volumes, Quaternary Sci. Rev., 161, 81–98, https://doi.org/10.1016/j.quascirev.2017.02.019, 2017.
Gao, H., Bohn, T. J., Podest, E., McDonald, K. C., and Lettenmaier, D. P.: On the causes of the shrinking of Lake Chad, Environ. Res. Lett., 6, 034021, https://doi.org/10.1088/1748-9326/6/3/034021, 2011.
Gao, Q., Zhu, X., Wang, Q., Zhou, K., Lu, X., Wang, Z., and Wang, X.: Enrichment and transfer of polycyclic aromatic hydrocarbons (PAHs) through dust aerosol generation from soil to the air, Front. Env. Sci. Eng., 17, https://doi.org/10.1007/s11783-023-1610-7, 2023a.
Gao, Q., Zhu, S., Zhou, K., Zhai, J., Chen, S., Wang, Q., Wang, S., Han, J., Lu, X., Chen, H., Zhang, L., Wang, L., Wang, Z., Yang, X., Ying, Q., Zhang, H., Chen, J., and Wang, X.: High enrichment of heavy metals in fine particulate matter through dust aerosol generation, Atmos. Chem. Phys., 23, 13049–13060, https://doi.org/10.5194/acp-23-13049-2023, 2023b.
Gao, Q., Chen, G., Lu, X., Chen, J., Zhang, H., and Wang, X.: Toxic Dust Emission from Drought-Exposed Lakebeds – A New Air Pollution Threat from Dried Lakes, Mendeley Data V1 [data set], https://doi.org/10.17632/vg8gtxs9nk.1, 2025.
Gelaro, R., McCarty, W., Suárez, M. J., Todling, R., Molod, A., Takacs, L., Randles, C. A., Darmenov, A., Bosilovich, M. G., and Reichle, R.: The modern-era retrospective analysis for research and applications, version 2 (MERRA-2), J. Climate, 30, 5419–5454, 2017.
Ghale, Y. A. G., Tayanc, M., and Unal, A.: Dried bottom of Urmia Lake as a new source of dust in the northwestern Iran: Understanding the impacts on local and regional air quality, Atmos. Environ., 262, 118635, https://doi.org/10.1016/j.atmosenv.2021.118635, 2021.
Gill, T. and Gillette, D.: Owens Lake: A natural laboratory for aridification, playa desiccation and desert dust, Geological Society of America Abstracts with Programs, 462, 1991.
Grineski, S. E., Mallia, D. V., Collins, T. W., Araos, M., Lin, J. C., Anderegg, W. R., and Perry, K.: Harmful dust from drying lakes: Preserving Great Salt Lake (USA) water levels decreases ambient dust and racial disparities in population exposure, One Earth, 7, 1056–1067, 2024.
Guenther, A. B., Jiang, X., Heald, C. L., Sakulyanontvittaya, T., Duhl, T., Emmons, L. K., and Wang, X.: The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions, Geosci. Model Dev., 5, 1471–1492, https://doi.org/10.5194/gmd-5-1471-2012, 2012.
Guo, H., Hu, Q., and Jiang, T.: Annual and seasonal streamflow responses to climate and land-cover changes in the Poyang Lake basin, China, J. Hydrol., 355, 106–122, https://doi.org/10.1016/j.jhydrol.2008.03.020, 2008.
Hamzehpour, N., Mahdavinia, G. R., and Rahmati, M.: Sand sheets – the major dust source in the western Lake Urmia playa – A comprehensive study of the soil-dust properties and stabilization, Int. J. Sediment Res., 39, 355–374, 2024.
He, J., Yang, Y., Zhang, L., Luo, Y., Liu, F., and Yang, P.: Polycyclic aromatic hydrocarbons (PAHs) in surface sediments of two lakes of the Dongting Lake district in Hunan, China, AIP Conference Proceedings, 1956, 020056, https://doi.org/10.1063/1.5034308, 2018.
He, X., Pang, Y., Song, X., Chen, B., Feng, Z., and Ma, Y.: Distribution, sources and ecological risk assessment of PAHs in surface sediments from Guan River Estuary, China, Mar. Pollut. Bull., 80, 52–58, https://doi.org/10.1016/j.marpolbul.2014.01.051, 2014.
Hosseinpoor, S., Habibi, S., and Mohammadi, A.: Understanding heavy metal contamination in the vicinity of Lake Urmia, NW Iran: Environmental and health Perspectives, Heliyon, 10, e34198, https://doi.org/10.1016/j.heliyon.2024.e34198, 2024.
Huang, S., Li, J., and Xu, M.: Water surface variations monitoring and flood hazard analysis in Dongting Lake area using long-term Terra/MODIS data time series, Nat. Hazards, 62, 93–100, 2012.
Johnston, J. E., Razafy, M., Lugo, H., Olmedo, L., and Farzan, S. F.: The disappearing Salton Sea: A critical reflection on the emerging environmental threat of disappearing saline lakes and potential impacts on children's health, Sci. Total Environ., 663, 804–817, https://doi.org/10.1016/j.scitotenv.2019.01.365, 2019.
Keyte, I. J., Harrison, R. M., and Lammel, G.: Chemical reactivity and long-range transport potential of polycyclic aromatic hydrocarbons – a review, Chem. Soc. Rev., 42, 9333–9391, https://doi.org/10.1039/c3cs60147a, 2013.
Kong, S., Pani, K., Griffith, M., Ou-Yang, C., Babu, R., Chuang, T., Ooi, G., Huang, S., Sheu, R., and Lin, H.: Distinct transport mechanisms of East Asian dust and the impact on downwind marine and atmospheric environments, Sci. Total Environ., 827, 154255, https://doi.org/10.1016/j.scitotenv.2022.154255, 2022.
Lafon, S., Sokolik, I. N., Rajot, J. L., Caquineau, S., and Gaudichet, A.: Characterization of iron oxides in mineral dust aerosols: Implications for light absorption, J. Geophys. Res.-Atmos., 111, https://doi.org/10.1029/2005jd007016, 2006.
Lafon, S., Alfaro, S. C., Chevaillier, S., and Rajot, J. L.: A new generator for mineral dust aerosol production from soil samples in the laboratory: GAMEL, Aeolian Res., 15, 319–334, https://doi.org/10.1016/j.aeolia.2014.04.004, 2014.
Li, F., Huang, J., Zeng, G., Yuan, X., Li, X., Liang, J., Wang, X., Tang, X., and Bai, B.: Spatial risk assessment and sources identification of heavy metals in surface sediments from the Dongting Lake, Middle China, J. Geochem. Explor., 132, 75–83, https://doi.org/10.1016/j.gexplo.2013.05.007, 2013.
Li, J., Zhuang, G., Huang, K., Lin, Y., Xu, C., and Yu, S.: Characteristics and sources of air-borne particulate in Urumqi, China, the upstream area of Asia dust, Atmos. Environ., 42, 776–787, https://doi.org/10.1016/j.atmosenv.2007.09.062, 2008.
Liu, D., Abuduwaili, J., Lei, J., and Wu, G.: Deposition rate and chemical composition of the aeolian dust from a bare saline playa, Ebinur Lake, Xinjiang, China, Water Air Soil Pollut., 218, 175–184, 2011.
Liu, J., Chen, Y., Chao, S., Cao, H., Zhang, A., and Yang, Y.: Emission control priority of PM2.5-bound heavy metals in different seasons: A comprehensive analysis from health risk perspective, Sci. Total Environ., 644, 20–30, 2018.
Liu, S., Xing, J., Sahu, S. K., Liu, X., Liu, S., Jiang, Y., Zhang, H., Li, S., Ding, D., and Chang, X.: Wind-blown dust and its impacts on particulate matter pollution in Northern China: current and future scenarios, Environ. Res. Lett., 16, 114041, https://doi.org/10.1088/1748-9326/ac31ec, 2021.
Lu, M., Zeng, D. C., Liao, Y., and Tong, B.: Distribution and characterization of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediment from Poyang Lake, China, Sci. Total Environ., 433, 491–497, https://doi.org/10.1016/j.scitotenv.2012.06.108, 2012.
McFeeters, S. K.: The use of the Normalized Difference Water Index (NDWI) in the delineation of open water features, Int. J. Remote Sens., 17, 1425–1432, 1996.
Meng, Y., Liu, X., Lu, S., Zhang, T., Jin, B., Wang, Q., Tang, Z., Liu, Y., Guo, X., Zhou, J., and Xi, B.: A review on occurrence and risk of polycyclic aromatic hydrocarbons (PAHs) in lakes of China, Sci. Total Environ., 651, 2497–2506, https://doi.org/10.1016/j.scitotenv.2018.10.162, 2019.
Messager, M. L., Lehner, B., Grill, G., Nedeva, I., and Schmitt, O.: Estimating the volume and age of water stored in global lakes using a geo-statistical approach, Nat. Commun., 7, 13603, https://doi.org/10.1038/ncomms13603, 2016.
Micklin, P.: The Aral sea disaster, Annu. Rev. Earth Pl. Sc., 35, 47–72, 2007.
Micklin, P. P.: Desiccation of the Aral Sea: a water management disaster in the Soviet Union, Science, 241, 1170–1176, 1988.
Mohammad Asgari, H., Mojiri-Forushani, H., and Mahboubi, M.: Temporal and spatial pattern of dust storms, their polycyclic aromatic hydrocarbons, and human health risk assessment in the dustiest region of the world, Environ. Monitor. Assess., 195, 76, https://doi.org/10.1038/ncomms13603, 2023.
Office of Environmental Health Hazard Assessment (OEHHA): OEHHA Acute, 8-hour and Chronic Reference Exposure Level (REL) Summary, available at: https://oehha.ca.gov/air/general-info/oehha-acute-8-hour-and-chronic-reference-exposure-level-rel-summary, last access: 24 September 2025, 2023.
Nisbet, I. C. and Lagoy, P. K.: Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs), Regul. Toxicol. Pharm., 16, 290–300, 1992.
U.S. Environmental Protection Agency (EPA), Office of Emergency and Remedial Response: Risk Assessment Guidance for Superfund, Volume I: Human Health Evaluation Manual (Part A, Interim Final), EPA/540/1-89/002, Washington, DC, USA, available at: https://www.osti.gov/biblio/7037757, last access: 24 September 2025, 1989.
O'Sullivan, P. and Reynolds, C.: Limnology and Limnetic ecology, https://doi.org/10.1002/9780470999271, 2004.
Onishi, K., Otani, S., Yoshida, A., Mu, H., and Kurozawa, Y.: Adverse health effects of Asian dust particles and heavy metals in Japan, Asia-Pac. J. Public He., 27, NP1719–NP1726, 2015.
Oyedotun, T. D. T.: X-ray fluorescence (XRF) in the investigation of the composition of earth materials: a review and an overview, Geology, Ecology, and Landscapes, 2, 148–154, 2018.
Peng, Y., Chen, G., Chao, N., Wang, Z., Wu, T., and Luo, X.: Detection of extreme hydrological droughts in the poyang lake basin during 2021–2022 using GNSS-derived daily terrestrial water storage anomalies, Sci. Total Environ., 919, 170875, https://doi.org/10.1016/j.scitotenv.2024.170875, 2024.
Qi, S., Zhang, X., Jiang, F., and Wang, P.: Research on the causes for hydrological drought trendin Poyang Lake, J. Natural Res., 34, 168–178, 2019.
Reheis, M. C.: Dust deposition downwind of Owens (dry) Lake, 1991–1994: Preliminary findings, J. Geophys. Res.-Atmos., 102, 25999–26008, 1997.
Ren, Y., Luo, Q., Zhuo, S., Hu, Y., Shen, G., Cheng, H., and Tao, S.: Bioaccessibility and public health risk of heavy Metal (loid) s in the airborne particulate matter of four cities in northern China, Chemosphere, 277, 130312, https://doi.org/10.1016/j.chemosphere.2021.130312, 2021a.
Ren, Y. Q., Wang, G. H., Li, J. J., Wu, C., Cao, C., Li, J., Wang, J. Y., Ge, S. S., Xie, Y. N., Li, X. R., Meng, F., and Li, H.: Evolution of aerosol chemistry in Xi'an during the spring dust storm periods: Implications for heterogeneous formation of secondary organic aerosols on the dust surface, Chemosphere, 215, 413–421, https://doi.org/10.1016/j.chemosphere.2018.10.064, 2019.
Ren, Y. X., Luo, Q., Zhuo, S. J., Hu, Y. A., Shen, G. F., Cheng, H. F., and Tao, S.: Bioaccessibility and public health risk of heavy Metal(loid)s in the airborne particulate matter of four cities in northern China, Chemosphere, 277, https://doi.org/10.1016/j.chemosphere.2021.130312, 2021b.
Shankman, D., Keim, B. D., and Song, J.: Flood frequency in China's Poyang Lake region: trends and teleconnections, Int. J. Climatol., 26, 1255–1266, 2006.
Sima, S., Rosenberg, D. E., Wurtsbaugh, W. A., Null, S. E., and Kettenring, K. M.: Managing Lake Urmia, Iran for diverse restoration objectives: Moving beyond a uniform target lake level, J. Hydrol., 35, 100812, https://doi.org/10.1016/j.ejrh.2021.100812, 2021.
Song, P., Fei, J. F., Li, C. S., and Huang, X. G.: Simulation of an Asian Dust Storm Event in May 2017, Atmosphere, 10, https://doi.org/10.3390/atmos10030135, 2019.
Sulla-Menashe, D. and Friedl, M. A.: User guide to collection 6 MODIS land cover (MCD12Q1 and MCD12C1) product, USGS, Reston, Va, Usa, 1, 18, https://doi.org/10.5067/MODIS/MCD12Q1.006, 2018.
Sun, X., Wang, F., Fan, Y., Li, Z., Liu, X., Zhao, J., Li, B., and Xia, D.: Transformation of lakebed into a major soluble-salt-bearing dust source for Asia since the mid-pleistocene, Global Planet. Change, 230, 104282, https://doi.org/10.1016/j.gloplacha.2023.104282, 2023.
Tegen, I., Harrison, S. P., Kohfeld, K., Prentice, I. C., Coe, M., and Heimann, M.: Impact of vegetation and preferential source areas on global dust aerosol: Results from a model study, J. Geophys. Res.-Atmos., 107, AAC 14-11–AAC 14-27, 2002.
U.S. Environmental Protection Agency (EPA): Regional Screening Levels (RSLs) – Generic Tables, available at: https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables, last access: 24 September 2025, 2015.
Van Vaeck, L. and Van Cauwenberghe, K.: Cascade impactor measurements of the size distribution of the major classes of organic pollutants in atmospheric particulate matter, Atmos. Environ., 12, 2229–2239, https://doi.org/10.1016/0004-6981(78)90179-8, 1978.
Wang, L., Guo, S., Hong, X., Liu, D., and Xiong, L.: Projected hydrologic regime changes in the Poyang Lake Basin due to climate change, Front. Earth Sci., 11, 95–113, 2017.
Wang, Q., Dong, X., Fu, J. S., Xu, J., Deng, C., Jiang, Y., Fu, Q., Lin, Y., Huang, K., and Zhuang, G.: Environmentally dependent dust chemistry of a super Asian dust storm in March 2010: observation and simulation, Atmos. Chem. Phys., 18, 3505–3521, https://doi.org/10.5194/acp-18-3505-2018, 2018.
Warren, N., Allan, I. J., Carter, J. E., House, W. A., and Parker, A.: Pesticides and other micro-organic contaminants in freshwater sedimentary environments – a review, Appl. Geochem., 18, 159–194, https://doi.org/10.1016/s0883-2927(02)00159-2, 2003.
Williamson, C. E., Saros, J. E., Vincent, W. F., and Smol, J. P.: Lakes and reservoirs as sentinels, integrators, and regulators of climate change, Limnol. Oceanogr., 54, 2273–2282, 2009.
World Health Organization (WHO): Air quality guidelines for Europe, WHO, Regional Office for Europe, ISBN 978-92-890-1358-1, 2000.
Wu, D., Zheng, H., Li, Q., Jin, L., Lyu, R., Ding, X., Huo, Y., Zhao, B., Jiang, J., and Chen, J.: Toxic potency-adjusted control of air pollution for solid fuel combustion, Nature Energy, 7, 194–202, 2022.
Wurtsbaugh, W. A., Miller, C., Null, S. E., DeRose, R. J., Wilcock, P., Hahnenberger, M., Howe, F., and Moore, J.: Decline of the world's saline lakes, Nat. Geosci., 10, 816–821, https://doi.org/10.1038/ngeo3052, 2017.
Xia, Y., Liu, Y., Wang, Z., Huang, Z., You, W., Wu, Q., Zhou, S., and Zou, J.: Damage Inflicted by Extreme Drought on Poyang Lake Delta Wetland and the Establishment of Countermeasures, Water, 16, 2292, https://doi.org/10.3390/w16162292, 2024.
Xie, Z., Jiang, Y., Zhang, H., Wang, D., Qi, S., Du, Z., and Zhang, H.: Assessing heavy metal contamination and ecological risk in Poyang Lake area, China, Environ. Earth Sci., 75, 1–15, 2016.
Xu, G., Liu, S., Cheng, S., Zhang, Y., Wu, X., and Wu, Y.: Quantifying the 2022 drought and spatiotemporal evolution of TWSA in the Dongting Lake Basin over the past two decades, Geodesy and Geodynamics, 15, 516–527, https://doi.org/10.1016/j.geog.2024.03.001, 2024.
Xu, J., Chen, Y., Zheng, L., Liu, B., Liu, J., and Wang, X.: Assessment of heavy metal pollution in the sediment of the main tributaries of Dongting Lake, China, Water, 10, 1060, https://doi.org/10.3390/w10081060, 2018.
Xue, C., Zhang, Q., Jia, Y., and Yuan, S.: Intensifying drought of Poyang Lake and potential recovery approaches in the dammed middle Yangtze River catchment, J. Hydrol., 50, 101548, https://doi.org/10.1016/j.ejrh.2023.101548, 2023.
Yang, L., Yue, L., and Li, Z.: The influence of dry lakebeds, degraded sandy grasslands and abandoned farmland in the arid inlands of northern China on the grain size distribution of East Asian aeolian dust, Environ. Geol., 53, 1767–1775, 2008.
Ying, Q., Feng, M., Song, D. L., Wu, L., Hu, J. L., Zhang, H. L., Kleeman, M. J., and Li, X. H.: Improve regional distribution and source apportionment of PM2.5 trace elements in China using inventory-observation constrained emission factors, Sci. Total Environ., 624, 355–365, https://doi.org/10.1016/j.scitotenv.2017.12.138, 2018.
Yuan, G.-L., Liu, C., Chen, L., and Yang, Z.: Inputting history of heavy metals into the inland lake recorded in sediment profiles: Poyang Lake in China, J. Hazard. Mater., 185, 336–345, https://doi.org/10.1016/j.jhazmat.2010.09.039, 2011a.
Yuan, G.-L., Liu, C., Chen, L., and Yang, Z. F.: Inputting history of heavy metals into the inland lake recorded in sediment profiles: Poyang Lake in China, J. Hazard. Mater., 185, 336–345, https://doi.org/10.1016/j.jhazmat.2010.09.039, 2011b.
Zhang, X., Liu, X., Zhang, M., Dahlgren, R. A., and Eitzel, M.: A review of vegetated buffers and a meta-analysis of their mitigation efficacy in reducing nonpoint source pollution, J. Environ. Qual., 39, 76–84, 2010.
Zhang, Y., Qu, C., Qi, S., Zhang, Y., Mao, L., Liu, J., Qin, S., and Yang, D.: Spatial-temporal variations and transport process of polycyclic aromatic hydrocarbons in Poyang Lake: Implication for dry–wet cycle impacts, J. Geochem. Explor., 226, 106738, https://doi.org/10.1016/j.gexplo.2021.106738, 2021.
Zhi, H., Zhao, Z. H., and Zhang, L.: The fate of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in water from Poyang Lake, the largest freshwater lake in China, Chemosphere, 119, 1134–1140, https://doi.org/10.1016/j.chemosphere.2014.09.054, 2015.
Zucca, C., Middleton, N., Kang, U., and Liniger, H.: Shrinking water bodies as hotspots of sand and dust storms: The role of land degradation and sustainable soil and water management, CATENA, 207, 105669, https://doi.org/10.1016/j.catena.2021.105669, 2021.
Short summary
Numerous lakes are shrinking, owing to climate change and human activities, releasing pollutants from dried lake beds as dust aerosols. The health risks remain unclear. Recently, Poyang and Dongting lakes faced record droughts, exposing 99 % and 88 % of their areas. We show that lake bed dust can raise PM10 to 637.5 μg m-³ and exceed non-carcinogenic (HQ = 4.13) and Cr carcinogenic (approx. 2.10 × 10−⁶) risk thresholds, posing growing health threats.
Numerous lakes are shrinking, owing to climate change and human activities, releasing pollutants...
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