title: Distribution and speciation of metals (Cu, Zn, Cd, and Pb) in agricultural and non-agricultural soils near a stream upriver from the Pearl River, China.
abstract: The distribution and chemical speciation of typical metals (Cu, Zn, Cd and Pb) in agricultural and non-agricultural soils were investigated in the area of Nanpan River, upstream of the Pearl River. The investigated four metals showed higher concentrations in agricultural soils than in non-agricultural soils, and the site located in factory district contained metals much higher than the other sampling sites. These observations suggested that human activities, such as water irrigation, fertilizer and pesticide applications might have a major impact on the distribution of metals. Metal speciation analysis presented that Cu, Zn and Cd were dominated by the residual fraction, while Pb was dominated by the reducible fraction. Because of the low mobility of the metals in the investigated area, no remarkable difference could be observed between upstream and downstream separated by the factory site.
authors: Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China.
authors: Silin
authors: S
authors: Yang
authors: Dequn
authors: D
authors: Zhou
authors: Huayong
authors: H
authors: Yu
authors: Rong
authors: R
authors: Wei
authors: Bo
authors: B
authors: Pan
mesh_terms: D000383:Agriculture; D002104:Cadmium / Q000032:analysis; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring; D007854:Lead / Q000032:analysis; D008670:Metals / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D015032:Zinc / Q000032:analysis
chemical_list: D008670:Metals; D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; D003300:Copper; D015032:Zinc