the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Average molecular weight of surfactants in aerosols
Abstract. Surfactants in atmospheric aerosols determined as methylene blue active substances (MBAS) and ethyl violet active substances (EVAS). The MBAS and EVAS concentrations can be correlated with surface tension as determined by pendant drop analysis. The effect of surface tension was more clearly indicated in fine mode aerosol extracts. The concentration of MBAS and EVAS was determined before and after ultrafiltration analysis using AMICON centrifuge tubes that define a 5000 Da (5 K Da) nominal molecular weight fraction. Overall, MBAS and to a greater extent EVAS predominates in fraction with molecular weight below 5 K Da. In case of aerosols collected in Malaysia the higher molecular fractions tended to be a more predominant. The MBAS and EVAS are correlated with yellow to brown colours in aerosol extracts. Further experiments showed possible sources of surfactants (e.g. petrol soot, diesel soot) in atmospheric aerosols to yield material having molecular size below 5 K Da except for humic acid. The concentration of surfactants from these sources increased after ozone exposure and for humic acids it also general included smaller molecular weight surfactants.
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RC S6052: 'Referee comment', Anonymous Referee #3, 17 Oct 2007
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RC S6786: 'major issues to be addressed', Anonymous Referee #1, 12 Nov 2007
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RC S6839: 'Minor issues and general comments', Anonymous Referee #2, 13 Nov 2007
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AC S8440: 'Answer to the reviewer', Mohd Talib Latif, 15 Jan 2008
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EC S9853: 'Editorial response to author comments', Gordon McFiggans, 09 Jul 2008
Interactive discussion
- Printer-friendly version
- Supplement
-
RC S6052: 'Referee comment', Anonymous Referee #3, 17 Oct 2007
-
RC S6786: 'major issues to be addressed', Anonymous Referee #1, 12 Nov 2007
-
RC S6839: 'Minor issues and general comments', Anonymous Referee #2, 13 Nov 2007
-
AC S8440: 'Answer to the reviewer', Mohd Talib Latif, 15 Jan 2008
-
EC S9853: 'Editorial response to author comments', Gordon McFiggans, 09 Jul 2008
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Cited
9 citations as recorded by crossref.
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- Evaluating the Extraction and Quantification of Marine Surfactants from Seawater through Solid Phase Extraction and Subsequent Colorimetric Analyses R. Bramblett & A. Frossard 10.1021/acsestwater.4c00497
- Composition and distribution of surfactants around Lake Chini, Malaysia M. Latif et al. 10.1007/s10661-011-2043-5
- MBAS (Methylene Blue Active Substances) and LAS (Linear Alkylbenzene Sulphonates) in Mediterranean coastal aerosols: Sources and transport processes S. Becagli et al. 10.1016/j.atmosenv.2011.04.041
- Composition and possible sources of anionic surfactants from urban and semi-urban street dust N. Wahid et al. 10.1007/s11869-017-0493-9
- Surfactants in the sea-surface microlayer and their contribution to atmospheric aerosols around coastal areas of the Malaysian peninsula R. Roslan et al. 10.1016/j.marpolbul.2010.04.004
- Analytical approach on surface active agents in the environment and challenges R. Kurrey et al. 10.1016/j.teac.2019.e00061
- Anionic Surfactants and Traffic Related Emission from an Urban Area of Perak, Malaysia H. Razak et al. 10.1007/s00244-019-00656-3
