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Published online 8 August 2008
Published in J Environ Qual 37:1752-1760 (2008)
DOI: 10.2134/jeq2007.0531
© 2008 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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TECHNICAL REPORTS

Heavy Metals in the Environment

Baseline Concentrations and Spatial Distribution of Trace Metals in Surface Soils of Guangdong Province, China

H. H. Zhanga,b, F. B. Lia,*, Z. F. Wua, D. Q. Lia, D. R. Xub and H. X. Yuana

a Guangdong Public Lab. of Environmental Science & Technology, Guangdong Inst. of Eco-Environmental and Soil Sciences, Guangzhou 510650, P. R. China
b CAS Key Lab. of Marginal Sea Geology, Guangzhou Inst. of Geochemistry, Guangzhou 510640, P. R. China

* Corresponding author (cefbli{at}soil.gd.cn; hhzhang{at}soil.cn).

Received for publication October 7, 2007. 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.

Abbreviations: GM, geometric mean • GSD, geometric standard deviation • PRD, Pearl River Delta






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