Measurements of  7 Be and  210 Pb in cloudwaters: Toward a better understanding of aerosol transport and scavenging | Zendy

Su ChihChieh | Zendy; Huh ChihAn | Zendy

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Measurements of 7 Be and 210 Pb in cloudwaters: Toward a better understanding of aerosol transport and scavenging

Author(s) -

Su ChihChieh,

Huh ChihAn

Publication year - 2006

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2005gl025042

Subject(s) - scavenging , aerosol , environmental chemistry , chemistry , air mass (solar energy) , ion , altitude (triangle) , atmospheric sciences , environmental science , analytical chemistry (journal) , geology , physics , antioxidant , thermodynamics , biochemistry , geometry , mathematics , organic chemistry , boundary layer

This paper presents the first results of 7 Be and 210 Pb specific activities in cloudwater and investigates their respective differences in cloudwater and rainwater. Our data and analysis show that temporal variation of the 7 Be/ 210 Pb activity ratio in cloudwater are caused by multiple sources of air masses, with increased 7 Be/ 210 Pb activity ratios corresponding to the advent of maritime or high‐altitude air masses. The measured specific activities of 7 Be and 210 Pb in cloudwater samples span three orders of magnitude and correlate strongly with the acidity of the samples. From this correlation and the observation that specific activities of 7 Be and 210 Pb are higher in the more acidic cloudwater, we suggest that 7 Be and 210 Pb in aerosol particles can be desorbed by H + ions.

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