| 贵阳大气降水硫同位素地球化学特征 |
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| 引用本文： | 肖红伟,肖化云,龙爱民,王燕丽.贵阳大气降水硫同位素地球化学特征[J].地球化学,2011(6):559-565. |
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| 作者姓名： | 肖红伟 肖化云 龙爱民 王燕丽 |
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| 作者单位： | [1]中国科学院南海海洋研究所热带海洋环境国家重点实验室,广东广州510301 [2]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002 |
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| 基金项目： | 国家自然科学基金（40573006,40721002,40373039） |
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| 摘 要： | 对贵阳地区2008年10月1日至2009年9月30日降水样品的SO42-含量和δ34S进行了测定.结果表明,研究时段内降水SO42-浓度为13.2 mg/L,δ34S值的变化范围为-12.0‰～+9.4‰,年均值为-2.8‰±1.4‰,主要来源于燃煤释放的含硫物质.大气降水SO42-浓度和δ34S值存在明显的季节性变化...
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| 关 键 词： | 降水 硫同位素组成 来源 季节变化 分馏 贵阳 |
Sulfur isotopic geochemical characteristics in precipitation at Gulyang |
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| XIAO Hong-wei,XIAO Hua-yun,LONG Ai-min,WANG Yan-li.Sulfur isotopic geochemical characteristics in precipitation at Gulyang[J].Geochimica,2011(6):559-565. |
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| Authors: | XIAO Hong-wei XIAO Hua-yun LONG Ai-min WANG Yan-li |
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| Institution: | 1. State Key Loboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. State Key Loboratory of Environmental Geochemistry, Institate of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China) |
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| Abstract: | This study analyzed the concentrations of SO4^2- and values of δ^34S in precipitation taken at Guiyang throughout one year from October 1, 2008 to September 30, 2009. The results indicated that the volume-weighted average concentration of SO2 in one year was 13.2 mg/L, and value of δ^34S was 2.8‰± 1.4‰ within range of 12.0‰ and ±9.4‰. Significant seasonal variations in SO4^2- concentration and δ^34S value, which are high in winter and low in summer, showed that SO4^2- concentration was affected by precipitation amount and pollutant sources, while δ^34S value was mainly affected by isotopic fractionation of equilibrium reaction, and may also by others such as coal combustion, air mass, biological activity, precipitation amount, and the oxidation of atmospheric sulfur. Because the δ^34S value of SO2 from coal combustion is more negative than other sources and the amount of SO2 declined each year, the δ^34S value in precipitation increased each year. |
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| Keywords: | precipitation δ^34S source apportionment seasonal variation fractionation Guiyang |
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