Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang, China

	Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang, China
	MiaoYun Zhang; ShiJie Wang; GuoQiang Ma; HuaiZhong Zhou; Jun Fu
通讯作者	ShiJie Wang
	2010
发表期刊	Science China Earth Sciences
卷号	53 期号:11 页码:1717-1725
摘要	Sulfur dioxide and sulfate aerosols in the atmosphere are significant factors leading to acidification of the atmospheric environment and worsening the pollution of acid deposition. Because of the " fingerprint" characteristics of the stable sulfur isotopic composition, sulfur isotope has been widely adopted in environmental researches concerning sulfur cycle and source identification. In this study, the atmospheric environment of Jinhua City, central Zhejiang Province, was continuously monitored, and the sulfur isotopic composition of SO(2) and sulfate aerosols in the atmosphere was analyzed. The results indicate that the variation of delta(34)S values for SO(2) ranges from 1.0 parts per thousand to 7.5 parts per thousand, and annual average is 4.7 parts per thousand +/- 2.3 parts per thousand, whereas that of sulfate aerosols ranges from 6.4 parts per thousand to 9.8 parts per thousand, and annual average is 8.1 parts per thousand +/- 1.0 parts per thousand. The delta(34)S values for SO(2) have significant seasonal variations, which are 7.0 parts per thousand in winter and 3.3 parts per thousand in summer. These variations cannot be attributed to a single factor, and we suggest a temperature-dependent isotope equilibrium fractionation and elevated biogenic sulfur emissions of isotopically light S in summer may be the main controlling mechanisms. Furthermore, we also discuss the delta(34)S model of atmospheric SO(2) oxidation to form sulfate, and suggest that heterogeneous oxidation dominates in the oxidation reactions of atmospheric SO(2) in the central Zhejiang Province. We further suggest that the relative humidity in the atmosphere plays an important role in the oxidation mechanism of atmospheric SO(2).
关键词	Sulfur Isotope So2 Aerosol Homogeneous Oxidation Heterogeneous Oxidation
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/4949
专题	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
通讯作者	ShiJie Wang
推荐引用方式 GB/T 7714	MiaoYun Zhang,ShiJie Wang,GuoQiang Ma,et al. Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang, China[J]. Science China Earth Sciences,2010,53(11):1717-1725.
APA	MiaoYun Zhang,ShiJie Wang,GuoQiang Ma,HuaiZhong Zhou,&Jun Fu.(2010).Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang, China.Science China Earth Sciences,53(11),1717-1725.
MLA	MiaoYun Zhang,et al."Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang, China".Science China Earth Sciences 53.11(2010):1717-1725.

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