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Identifying the change in atmospheric sulfur sources in China using isotopic ratios in mosses
Hua-Yun Xiao; Cong-Guo Tang; Hong-Wei Xiao; Xue-Yan Liu; Cong-Qiang Liu
2009
Source PublicationJournal of Geophysical Research Atmospheres
Volume114Issue:D16Pages:4723-4734
AbstractA considerable number of studies on rainwater sulfur isotopic ratios (d34Srain) have been conducted to trace sulfur sources at a large number of sites in the past. If longitudinal studies on the isotope composition of precipitation sulfate were conducted, it is possible to relate that to changes in sulfur emissions. But direct measurement needs considerable labor and time. So, in this study, sulfur isotopic ratios in rainwater and mosses were analyzed at Guiyang and Nanchang to evaluate the possibility of using mosses as a substitute for rainwater. We found that present moss sulfur isotopic ratios were comparable to those of present rainwater. Additionally, we investigated the changes of atmospheric sulfur sources and sulfur concentrations using an isotopic graphic analysis at five industrial cities, two forested areas, and two remote areas in China. Mosses in industrial cities show a wide range of d34S values, with the highest occurring at Chongqing (+3.9%) and the lowest at Guiyang (3.1%). But as compared to those in forested and remote areas, d34S values of mosses in all the five industrial cities are lower. On the basis of isotopic comparisons between past rainwater (reported in the literature) and present mosses, in the plot of d34Smoss versus d34Srain, six zones indicating different atmospheric sulfur change are separated by the 1:1 line and d34S values of potential sulfur sources. Our results indicate that atmospheric sulfur pollution in most of the industrial cities decreased, while at the two forested areas, no significant changes were observed, and a new anxiousness coming from new energy sources (e.g., oil) appeared in some cities. Studies on the change of ambient SO2 concentrations support these results.
Subject Area环境地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6749
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
Hua-Yun Xiao,Cong-Guo Tang,Hong-Wei Xiao,et al. Identifying the change in atmospheric sulfur sources in China using isotopic ratios in mosses[J]. Journal of Geophysical Research Atmospheres,2009,114(D16):4723-4734.
APA Hua-Yun Xiao,Cong-Guo Tang,Hong-Wei Xiao,Xue-Yan Liu,&Cong-Qiang Liu.(2009).Identifying the change in atmospheric sulfur sources in China using isotopic ratios in mosses.Journal of Geophysical Research Atmospheres,114(D16),4723-4734.
MLA Hua-Yun Xiao,et al."Identifying the change in atmospheric sulfur sources in China using isotopic ratios in mosses".Journal of Geophysical Research Atmospheres 114.D16(2009):4723-4734.
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