Abstract
Based on the environmental standard and environmental quality risk assessment criteria for soil of China, the pollution level and assessment of chromium in agricultural soil samples around chromate plant were analyzed. The 176 agricultural soil samples were collected according to radial distribution method near chromium slag disposal site and a radius of 150m in 11 areas at 10cm interval from the surface layer to the underground 150cm vertically on each monitoring point. The results showed that the concentration of Cr (VI) and total chromium decreased with the increase of the chromium slag disposal site distance. The content of Cr (VI) in the soil near pile of chromium slag was significantly higher than the background value and the surface soil Cr (VI) content is up to 30.54 mg/kg that the pollution index was 5.7. The content of Cr (VI) decrease with increase of the soil depth. The total chromium pollution index in surface soil near Chromium slag heap is highest for 4.61. The Cr (VI) content in soil is less than the standard value proposed by Environmental quality risk assessment criteria for soil at manufacturing facilities.
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