ICP-AES法测定及分析窖泥中重金属元素

Determination and analysis of heavy metal elements in pit mud by ICP-AES

以窖泥为对象,采用电感耦合等离子体发射光谱法快速测定了重金属元素Cd、Pb、Cr、Cu、Zn含量,结果表明:窖泥中Cd、Pb、Cr、Cu、Zn元素含量平均值分别为0.000 7μg/g、0.011 3μg/g、0.098 3μg/g、0.038 5μg/g、0.910 7μg/g,其中Pb迁移变化活跃,变异系数达131.85%。窖泥Cd、Pb、Cr、Cu、Zn的单项污染指数值显著低于国标限量水平,各窖池综合污染指数值同样显著低于国标安全评价标准值,表明企业窖泥清洁安全无重金属污染风险。

The contents ofPb, Cr, Cu, Zn and Cd in pit mud were determined by inductively coupled plasma spectrometry. The results showed that the average values ofCd, Pb, Cr, Cu and Zn were 0.000 7μg/g, 0.011 3 μg/g, 0.098 3 μg/g, 0.038 5μg/g, 0.910 7 μg/g, respectively. Among them, the variation coefficient of Pb was 131.85%, which indicated that Pb was active. In pit mud, Cd, Pb, Cr, Cu, Zn of single pollution index values were sig- nificantly lower than national limited level, and the comprehensive pollution index values were also significantly lower than the national stardard saRy evaluation standard, which indicated that the pit mud was clean and without heavy metal pollution risk.