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【答案】应助回帖
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sltmac: 金币+15, 翻译EPI+1 2012-04-08 08:13:40
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It can be seen from Table 2-4: Industrial Zone of pollution principal component reflects the higher load factor variables of Cu, Zn, Pb, Ni, Cr, indicating that mainly affected by the impact of industrial pollution emissions. Studies have shown that: Pb pollution by the smelter, chemical plant industrial emissions are more prominent, especially the high Pb in smelter exhausts its emissions amounted to 2.68t / a, industrial emissions of Pb with dust suppression settlement to the surface into the soil, the Pb content in the soil increased; in addition, the smelting itself easily lead to the environment, Cu and Zn in increase. While Cu and Zn in and Cr, As and Cd in most of the from the mining, metallurgical industry, as well as industrial waste, all of which may cause the industrial zone of soil heavy metal content increased. |
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