昆明地区土壤重金属与农药残留分析

Heavy metal pollution and pesticide residues in soils of Kunming area

摘要: 对昆明地区土壤中Cd、Cu、Pb、As、Cr、Hg6种重金属和六六六、DDT、甲胺磷、乐果4种农药含量进行了调查监测,并就其来源及污染状况进行了评价,结果表明:Cd、Cu、As、Hg等重金属对土壤均存在不同程度的污染,其中Cd污染最为严重,其后依次为Cu、Hg、As、Pb、Cr,土壤重金属综合评价为中度污染,土壤有机氯农药仍有部分残留,有机磷农药残留量很低。

Abstract: Investigations and survey were carried out to determine heavy metal pollution(Cd、Cu、Pb、As、Cr and Hg)and pesticide residues(666、DDT、methamidophos、omethoate)in soils of Kunming area.Their sources were probed into and severities assessed.The results indicate that the soils are polluted with Cd、Cu、As and Hg to a varying extent.The pollution by Cd is the most serious and then followed in the order of Cu>Hg>As>Pb>Cr.The comprehensive assessment shows that the heavy metal pollution of the soil is medium in level.Residues of organic chlorin pesticides were found in the soil,and so were organic phosphor pesticides,though quite low in content.