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- W2350311207 abstract "Concentrations of heavy metals including Cr,Ni,Cu,Zn,Cd and Pb in the snow sampled from some areas of Beijing in the two snowfalls of 2011 were monitored,pollution level and enrich factors(EF) of Cr,Ni,Cu,Zn,Cd and Pb in the snow were analyzed.Results revealed the order of the concentrations in the snow samples from high to low as Zn,Pb, Cr,Cu,Ni,Cd,with the highest and lowest concentration as zinc 224.50～3 031.25μg/L and cadmium 6.18～75.35μg/L respectively.Concentrations of Ni,Cd,Pb were higher than Grade V of environmental quality standard for surface water and the concentrations of Cd,Pb more than discharge standard of pollutants for municipal wastewater treatment plant.Al was chosen to be the reference element in the study to calculate EF of 6 metals,and results showed that EF of Cr and Ni was less than 10,implying that these two elements were entirely from crustal materials or natural process.EF values of Cu and Zn ranged from 10 to 500,which showed the two metals come from both natural source and anthropogenic source,while Cd and Pb had EF values higher than 500,suggesting the sources of the metals are more likely to be anthropogenic." @default.
- W2350311207 created "2016-06-24" @default.
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- W2350311207 date "2013-01-01" @default.
- W2350311207 modified "2023-09-25" @default.
- W2350311207 title "Analysis and Study on Heavy Metal Pollution in Snow Samples from Some Areas of Beijing" @default.
- W2350311207 hasPublicationYear "2013" @default.
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