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- W2384553895 abstract "In order to investigate the pollution characteristics of heavy metals in a typical tin mineral processing plant in Yunnan, the water, dust and tailings samples from the discharging nodes were tested by ICP-OES, and single factor pollution index method and Nemerow integrated index method were used to evaluate the status of heavy metal pollution. Finally, the heavy metal contents were analyzed for contrast. The results show that the metal contents in the water and dust samples are higher than reference values. The contents of Zn, As, Cu and Pb in the tailings samples are rich and the average values are 2225, 1855, 870.50 and 417 mg/kg, respectively. The metal contents in soils surrounding the tailings exceed the background levels and are similar to the tailings pollution status. The results of single factor pollution index method shows that the pollution degree of water is in the decreasing order of Zn, Pb, As, Hg, Cu, As, Cd, Cu, and the pollution degrees of dust and soil samples in the decreasing orders of Zn, Pb, Hg, Cr and Zn, As, Pb, Cu, Cr, Sn, Cd, Hg, respectively. The Nemerow integrated index results suggest that the pollution degrees of concentrate filtration and fine ore bin are the highest. The Nemerow integrated index of soil samples is 21.73, which is significantly higher than the standard value of surface water class Ⅳ. The comparative analysis shows that the tin mineral processing plant becomes a combined polluted area by various metals, and the amount of heavy metals is in the decreasing order of Zn, As, Cu, Pb, Sn, Cr, Cd and Hg, and the ratio of heavy metals from tailings is 79.17%, which accounts for the most." @default.
- W2384553895 created "2016-06-24" @default.
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- W2384553895 date "2014-01-01" @default.
- W2384553895 modified "2023-09-23" @default.
- W2384553895 title "Pollution characteristics of heavy metals in typical tin mineral processing plant of Yunnan, China" @default.
- W2384553895 hasPublicationYear "2014" @default.
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