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- W2384403306 abstract "The concentrations of Cu,Zn,Pb,As,Cr and Ni in urban street dust collected from Kunming were analyzed by using X-Ray fluorescence spectrometry.Spatial technique was applied to study the content level and the spatial distribution characteristics of heavy metal pollution in street dust of Kunming.The ecological risks of heavy metals in street dust were assessed with the potential ecological risk index method.The results show that the average concentrations of Cu,Zn,Pb,As,Cr and Ni in the street dust in Kunming were 166.6,316.53,97.49,20.56,79.41 and 21.45mg·kg-1,respectively,much higher than the background concentrations in soil in China,in which Cu,Zn,Pb and As contributed to pollution largely,whose concentrations had reached a relative enrichment level.Accumulation of heavy metals in dry season was significantly higher than that in rainy season.The highest content of heavy metals existed in the industrial areas,and the second in traffic areas.Heavy metals mainly came from traffic pollution in urban street dust and from industrial pollution in suburbs.The potential ecological risk of heavy metals in the street dust of Kunming had reached a higher level.The order of potential ecological risk indexes of heavy metals was Cu Zn As Pb Cr Ni,in which Cu was the most important ecological risk factor." @default.
- W2384403306 created "2016-06-24" @default.
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- W2384403306 date "2011-01-01" @default.
- W2384403306 modified "2023-09-23" @default.
- W2384403306 title "Heavy Metal Pollution and the Ecological Risk Assessment of Urban Street Dust in Kunming" @default.
- W2384403306 hasPublicationYear "2011" @default.
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