Guan Hui, Xiao Hua-Yun, Zhu Ren-Guo, Zheng Neng-Jian, Qu Ling-Lu
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.
Huan Jing Ke Xue. 2013 Oct;34(10):3777-81.
This study analyzed the inorganic sulfur (SSO4) and total sulfur (ST) content as well as the isotopic signatures (delta34SSO4 and 834ST) in leaves of Pinus massoniana lamb. collected from Guizhou and Yunnan areas. The results indicated that the SSO4 and ST content in leaves at Guiyang areas was significantly higher than that at Yunnan areas, and the content of inorganic sulfur in the leaves was found to be directly related to the concentration of ambient sulfur dioxide, but no correlation was seen between the ST content and the ambient sulfur dioxide, showing the SSO4 content in leaves was more reliable to reflect the ambient sulfur input. The average value of delta34SSO4 in leaves at Guiyang areas ( -7. 22%o) was significantly lower than that at Yunnan areas(3. 85 per thousand) , which was related to the fact that the sulfur isotopic composition of coal at Guiyang areas is lower than that at Yunnan areas. The SSO4 and ST content in leaves around Kunming steel and Qujing power plant was inversely proportional to the distance from the factories, while around Kunming steel plant the value of 83SSO4 in leaves became more negative when the distance became larger while around Qujing power plant the value of 834Sso4 became more positive when the distance became larger, indicating that the SSO4 content and delta34SSO4, in leaves around Kunming steel and Qujing power plant were controlled by coal sources of atmospheric sulfur deposition.
本研究分析了采集自贵州和云南地区的马尾松叶片中的无机硫（SSO4）和总硫（ST）含量以及同位素特征（δ34SSO4和δ34ST）。结果表明，贵阳地区叶片中的SSO4和ST含量显著高于云南地区，且叶片中无机硫含量与环境二氧化硫浓度直接相关，但ST含量与环境二氧化硫之间未发现相关性，表明叶片中的SSO4含量更能可靠地反映环境硫输入。贵阳地区叶片中δ34SSO4的平均值（-7.22‰）显著低于云南地区（3.85‰），这与贵阳地区煤炭的硫同位素组成低于云南地区这一事实有关。昆明钢铁厂和曲靖电厂周边叶片中的SSO4和ST含量与距工厂的距离成反比，而在昆明钢铁厂周边，叶片中δ34SSO4的值随距离增大而变得更负，而在曲靖电厂周边，δ34SSO4的值随距离增大而变得更正，表明昆明钢铁厂和曲靖电厂周边叶片中的SSO4含量和δ34SSO4受大气硫沉降煤源的控制。
