引用本文:徐亮,钟声,魏宏农.环境污染事故中重金属优先快速监测方法研究[J].环境监控与预警,2014,6(3):20-23
XU Liang,ZHONG Sheng,WEI Hong nong.Study on Prior and Rapid Monitoring Method about Heavy Metal in Environmental Pollution Accidents[J].Environmental Monitoring and Forewarning,2014,6(3):20-23
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环境污染事故中重金属优先快速监测方法研究
徐亮,钟声,魏宏农
江苏省环境监测中心
摘要:
在国内外重金属监测技术的基础上对环境污染事故中重金属(铜、铅、锌、砷、汞、铬、镉)的两种主要快速监测方法进行了研究。研究结果表明:比色法可测试铜、铅、锌、镉、六价铬5种重金属,且精密度与准确度均较好;阳极溶出伏安法(ASV)可测试铜、铅、锌、镉、砷、汞6种重金属,但测定六价铬时偏差较大;除六价铬和铜外,阳极溶出伏安法的测试范围较比色法宽,且检出限较低;阳极溶出伏安法可同时测定镉、铅、铜3种金属,具有较好的适用性。
关键词:  重金属  快速监测  比色法  阳极溶出伏安法
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Study on Prior and Rapid Monitoring Method about Heavy Metal in Environmental Pollution Accidents
XU Liang,ZHONG Sheng,WEI Hong nong
Abstract:
Based on the monitoring technologies of heavy metals in the world, two major rapid methods for monitoring the heavy metals(Cu, Pb, Zn, As, Hg, Cr and Cd)in environmental pollution accidents were studied in this paper. The results showed that:Colorimentric method can test the content of Cu, Pb, Zn, Cd and Cr (VI), which reveals a good precision and accuracy;Anodic stripping voltammetry(ASV) can test the content of Cu, Pb, Zn, Cd, As and Hg, but has a large discrepancy when applied in testing Cr (VI);ASV has a larger test range and lower detection limit than colorimentric method with exception of Cu and Cr(VI);ASV can test the content of Cd, Pb and Cu simultaneously, which also displays a good applicability.
Key words:  Heavy metals  Rapid monitoring  Colorimentric method  ASV