Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-3779-2019 |
Seasonality in the Delta S-33 measured in urban aerosols highlights an additional oxidation pathway for atmospheric SO2 | |
Yang, David Au1,2; Cartigny, Pierre1; Desboeufs, Karine3; Widory, David2 | |
2019-03-25 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:6页码:3779-3796 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Canada |
英文摘要 | Sulfates present in urban aerosols collected worldwide usually exhibit significant non-zero Delta S-33 signatures (from -0.6 parts per thousand to 0.5 parts per thousand) whose origin still remains unclear. To better address this issue, we recorded the seasonal variations of the multiple sulfur isotope compositions of PM10 aerosols collected over the year 2013 at five stations within the Montreal Island (Canada), each characterized by distinct types and levels of pollution. The delta S-34-values (n = 155) vary from 2.0 parts per thousand to 11.3 parts per thousand (+/- 0.2 parts per thousand, 2 sigma), the Delta S-33-values from 0.080 parts per thousand to 0.341 parts per thousand (+/- 0.01 parts per thousand, 2 sigma) and the Delta S-36-values from 1.082 parts per thousand to 1.751 parts per thousand (+/- 0.2 parts per thousand, 2 sigma). Our study evidences a seasonality for both the delta S-34 and Delta S-33, which can be observed either when considering all monitoring stations or, to a lesser degree, when considering them individually. Among them, the monitoring station located at the most western end of the island, upstream of local emissions, yields the lowest mean delta S-34 coupled to the highest mean Delta S-33-values. The Delta S-33-values are higher during both summer and winter, and are < 0.1 parts per thousand during both spring and autumn. As these higher Delta S-33-values are measured in "upstream" aerosols, we conclude that the mechanism responsible for these highly positive S-MIF also occurs outside and not within the city, at odds with common assumptions. While the origin of such variability in the Delta S-33-values of urban aerosols (i.e. -0.6 parts per thousand to 0.5 parts per thousand) is still subject to debate, we suggest that oxidation by Criegee radicals and/or photooxidation of atmospheric SO2 in the presence of mineral dust may play a role in generating such large ranges of S-MIF. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462349600002 |
WOS关键词 | SULFUR ISOTOPE FRACTIONATION ; STABILIZED CRIEGEE INTERMEDIATE ; MASS-INDEPENDENT FRACTIONATION ; CONNECTED FLOW CONDITIONS ; LONG-RANGE TRANSPORT ; GAS-PHASE OXIDATION ; ASIAN DUST ; HETEROGENEOUS OXIDATION ; MONOTERPENE OZONOLYSIS ; SIZE DISTRIBUTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181692 |
专题 | 地球科学 |
作者单位 | 1.Univ Paris Diderot, Inst Phys Globe Paris, Lab Geochim Isotopes Stables, CNRS,UMR 7154,Sorbonne Paris Cite, 1 Rue Jussieu, F-75005 Paris, France; 2.Univ Quebec Montreal, GEOTOP, Montreal, PQ H3C 3P8, Canada; 3.Univ Paris Est Creteil, Univ Paris 7 Denis Diderot, CNRS, UMR7583,Inst Pierre Simon Laplace,LISA, F-94010 Creteil, France |
推荐引用方式 GB/T 7714 | Yang, David Au,Cartigny, Pierre,Desboeufs, Karine,et al. Seasonality in the Delta S-33 measured in urban aerosols highlights an additional oxidation pathway for atmospheric SO2[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(6):3779-3796. |
APA | Yang, David Au,Cartigny, Pierre,Desboeufs, Karine,&Widory, David.(2019).Seasonality in the Delta S-33 measured in urban aerosols highlights an additional oxidation pathway for atmospheric SO2.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(6),3779-3796. |
MLA | Yang, David Au,et al."Seasonality in the Delta S-33 measured in urban aerosols highlights an additional oxidation pathway for atmospheric SO2".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.6(2019):3779-3796. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论