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- W2392677993 abstract "The spatial-temporal variations of heavy metals in water and sediments of a stream affected by zinc smelting industry in Hezhang,Guizhou Province,were studied.It was found that water and sediments had been polluted by heavy metals.The average concentrations of lead,zinc and cadmium in surface water were respectively 137.19×10-3,1 919.38×10-3 and 14.21×10-3 mg·L-1,which were 2.74,1.91 and 2.84 times of Class Ⅲ of environmental quality standards for surface water,respectively.Also,the average concentrations of copper,lead,zinc and cadmium in sediments were 702.79,3 242.8,5 427.6 and 32.19 mg·kg-1,which were 1.76,6.49,10.86 and 32 times as much as the Class Ⅲ of soil environmental quality standard,respectively.Affected by the waste residue of zinc smelting and lead or zinc processing factories,concentrations of copper,lead,zinc and cadmium varied in both water and sediments along the river.In last decade,it was found that concentrations of heavy metals increased in water,which showed serious pollution in the study area.However,the contents of lead and zinc in sediments decreased and that of cadmium and copper increased at the same period." @default.
- W2392677993 created "2016-06-24" @default.
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- W2392677993 date "2011-01-01" @default.
- W2392677993 modified "2023-09-26" @default.
- W2392677993 title "Spatial and Temporal Variation Characteristics of Heavy Metal Pollution of Water-sediments in Stream of Zinc Smelting Area,Hezhang of Guizhou,China" @default.
- W2392677993 hasPublicationYear "2011" @default.
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