中国广东省表层土壤中痕量金属的基线浓度及空间分布
Baseline concentrations and spatial distribution of trace metals in surface soils of Guangdong province, China.
作者信息
Zhang H H, Li F B, Wu Z F, Li D Q, Xu D R, Yuan H X
机构信息
Guangdong Public Lab. of Environmental Science & Technology, Guangdong Inst. of Eco-Environmental and Soil Sciences, Guangzhou 510650, P. R. China.
出版信息
J Environ Qual. 2008 Aug 8;37(5):1752-60. doi: 10.2134/jeq2007.0531. Print 2008 Sep-Oct.
A total of 260 surface soil samples were collected to investigate the spatial distribution of trace metals in Guangdong province, one of the fast developing regions in China. The results show that the upper baseline concentrations of Cu, Pb, Zn, Cd, Ni, Cr, and Hg were 28.7, 57.6, 77.8, 0.13, 23.5, 87.0, and 0.15 mg kg(-1), respectively. Regional parent materials and pedogenesis are the primary factors influencing the concentrations of trace metals, and various anthropogenic activities are the second most important factors. The spatial distribution of trace metals is correlated to the geological characters with high concentrations of trace metals always located in regional fault areas, basins, and the Pearl River Delta alluvial plain and to the low concentrations associated with the other areas in Guangdong province.
总共采集了260个表层土壤样本，以调查中国快速发展地区之一广东省痕量金属的空间分布。结果表明，铜、铅、锌、镉、镍、铬和汞的上层基线浓度分别为28.7、57.6、77.8、0.13、23.5、87.0和0.15毫克/千克（-1）。区域母质和成土作用是影响痕量金属浓度的主要因素，各种人为活动是第二重要的因素。痕量金属的空间分布与地质特征相关，痕量金属高浓度区域总是位于区域断层区、盆地和珠江三角洲冲积平原，而低浓度区域则与广东省的其他地区相关。
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