Sulfur isotopic signatures of water-soluble sulfate in needles of Pinus Massoniana Lamb in two Chinese areas

	Sulfur isotopic signatures of water-soluble sulfate in needles of Pinus Massoniana Lamb in two Chinese areas
	Hui Guan, Hua-yun Xiao; Cong-qiang Liu
	2015
发表期刊	Environmental Earth Sciences
卷号	73 期号:4 页码:1805-1811
摘要	This study analyzed the water-soluble sulfate (S-SO4) and total sulfur (S-T) concentrations and their isotopic signatures (delta S-34(SO4) and delta S-34(T)) in needles of Pinus massoniana Lamb collected from Guiyang (seriously affected by acid rain) and Yunnan areas (acid rain did not occur), China SW. The results indicated that the S-SO4 concentrations in needles of Pinus massoniana Lamb collected from several Chinese areas were found to be significantly correlated to ambient sulfur dioxide (R (2) = 0.9176, p = 0.01), showing that S-SO4 concentrations in needles were more reliable to indicate atmospheric sulfur. The average delta S-34(SO4) (-7.2 aEuro degrees) and delta S-34(TS) (-5.1 aEuro degrees) in needles in Guiyang areas were significantly lower than those in Yunnan areas (+3.9 and +5.7 aEuro degrees, respectively), which were in accordance with the lower delta S-34 of coals in Guiyang areas than in Yunnan areas. The delta S-34(SO4) and delta S-34(TS) in needles became less positive with a distance from a plant combusted S-34-enriched coals while for another plant combusted S-34-depleted coals, more positive was observed. These results indicated that delta S-34(SO4) in needles was also a good indicator of atmospheric sulfur sources. A very small difference between delta(34) S-T and delta(34) S-SO4 for most needle samples suggested that little isotopic fractionation accompanies sulfur assimilation processes.
关键词	Pinus Massoniana Lamb Needles Water-soluble Sulfate Total Sulfur Δ34s Source Discrimination
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/352002/5992
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	Hui Guan, Hua-yun Xiao,Cong-qiang Liu. Sulfur isotopic signatures of water-soluble sulfate in needles of Pinus Massoniana Lamb in two Chinese areas[J]. Environmental Earth Sciences,2015,73(4):1805-1811.
APA	Hui Guan, Hua-yun Xiao,&Cong-qiang Liu.(2015).Sulfur isotopic signatures of water-soluble sulfate in needles of Pinus Massoniana Lamb in two Chinese areas.Environmental Earth Sciences,73(4),1805-1811.
MLA	Hui Guan, Hua-yun Xiao,et al."Sulfur isotopic signatures of water-soluble sulfate in needles of Pinus Massoniana Lamb in two Chinese areas".Environmental Earth Sciences 73.4(2015):1805-1811.

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