Evidence for Aerosol Chlorine Reactivity During Filter Sampling
- David R. Schryer
Published Online: 21 MAR 2013
Copyright 1982 by the American Geophysical Union.
Heterogeneous Atmospheric Chemistry
How to Cite
Mingxing, W. and Winchester, J. W. (1982) Evidence for Aerosol Chlorine Reactivity During Filter Sampling, in Heterogeneous Atmospheric Chemistry (ed D. R. Schryer), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM026p0257
- Published Online: 21 MAR 2013
- Published Print: 1 JAN 1982
Print ISBN: 9780875900513
Online ISBN: 9781118663813
- Atmospheric chemistry—Addresses, essays, lectures
Concentrations of particulate chlorine are compared with those of other elements as sampled by cascade impactors and filter samplers at rural Xinglong and urban Beijing (cf. Berg and Winchester, 1978; Cicerone, 1981). It is found that a significant Cl deficit for filter as compared with impactor data occurs in the rural area, but in the urban area an apparently much lower deficit is found. The Cl deficit is considered to represent a volatility loss by chemical reactions during filter sampling, but less so during impactor sampling. A possible chemical reaction for Cl loss is acidification and release of HCl. The comparison between urban and rural areas suggests that the urban atmosphere is less acidic, perhaps due to the relatively high abundance of neutralizing particulate matter, including black smoke constituents from coal combustion.