Articles | Volume 18, issue 2
https://doi.org/10.5194/acp-18-1325-2018
https://doi.org/10.5194/acp-18-1325-2018
Research article
 | 
01 Feb 2018
Research article |  | 01 Feb 2018

Atmospheric organochlorine pesticides and polychlorinated biphenyls in urban areas of Nepal: spatial variation, sources, temporal trends, and long-range transport potential

Balram Pokhrel, Ping Gong, Xiaoping Wang, Sanjay Nath Khanal, Jiao Ren, Chuanfei Wang, Shaopeng Gao, and Tandong Yao

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Latest update: 13 Oct 2025
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Short summary
As Nepal is a tropical country close to the Himalayas, it is essential to investigate concentration levels and long-range transport potential of persistent organic pollutants (POPs) in its cities to assess whether these pollutants can contaminate the high Himalaya. We found high concentration and long travel distance (> 1000 km) of dichlorodiphenyltrichloroethane and hexachlorocyclohexane in the atmosphere of Nepalese cities, suggesting Nepal can be an important regional source region for POPs.
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