Sources and meteorological factors that control seasonal variation of delta S-34 values in rainwater

	Sources and meteorological factors that control seasonal variation of delta S-34 values in rainwater
	Hong-Wei Xiao; Hua-Yun Xiao; Ai-Min Long; Yan-Li Wang; Cong-Qiang Liu
	2014
发表期刊	149 154-165
卷号	149 期号:1 页码:154-165
摘要	Sulfate concentrations and sulfur isotopic compositions were measured in rainwater in Guiyang city in Southwest China between October 2008 and September 2009 to identify sulfur sources and their impacts on sulfur isotopic composition. The delta S-34 values of 1235 samples collected during this period ranged from - 12.0 to + 9.4 parts per thousand, with a volume-weighted mean of - 2.8 +/- 9.8 parts per thousand, suggesting that rainwater sulfate in Guiyang was mainly derived from SO2 produced during coal combustion. The delta S-34 values of rainwater sulfate increased from 1987 to 2009, with an increment of about + 0.16 parts per thousand per year, reflecting a gradual reduction in S-34-depleted SO2 emitted during coal combustion. Seasonal variations in delta S-34 values were pronounced, with higher values in winter than in summer. Long-distance transport of SO2 from coal burned in northern cities (which was higher than the component from southern cities), and more importantly, the aqueous oxidation of SO2 during transport affected the seasonal variation of rainwater delta S-34 values in Guiyang. Temperature-dependent aqueous oxidation of SO2 suggested that lower rainwater delta S-34 coincides with higher temperature.
关键词	Δ34s Sources Concentration-weighted Trajectory Temperature Washout Oxidation Pathways
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/352002/5269
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
推荐引用方式 GB/T 7714	Hong-Wei Xiao,Hua-Yun Xiao,Ai-Min Long,et al. Sources and meteorological factors that control seasonal variation of delta S-34 values in rainwater[J]. 149 154-165,2014,149(1):154-165.
APA	Hong-Wei Xiao,Hua-Yun Xiao,Ai-Min Long,Yan-Li Wang,&Cong-Qiang Liu.(2014).Sources and meteorological factors that control seasonal variation of delta S-34 values in rainwater.149 154-165,149(1),154-165.
MLA	Hong-Wei Xiao,et al."Sources and meteorological factors that control seasonal variation of delta S-34 values in rainwater".149 154-165 149.1(2014):154-165.

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