摘要
系统评估了便携式XRF重金属检测仪的精密度、准确度及测定影响因素,开展了该方法测定土壤中Cu、Zn、As、Pb、Cr与国标分析方法的系统比对。结果表明:上述5种元素的方法检出限为5.7 mg/kg^16.0 mg/kg,土壤标准样品测定6次结果的RSD为1.0%~4.7%,Zn、Pb和As测定结果的相对误差<10%;与国标法相比,便携式XRF重金属检测仪测定Cu、Zn、As、Pb的准确度较好,测定Cr的准确度波动较大。将该方法用于应急污染事故监测,可迅速锁定污染物及污染区域,实现野外分析的预判。
The precision and accuracy of portable XRF heavy metal measuring instrument were evaluated. A comparison of the national standard method with the current method in determining CuN ZnN AsN PbN Cr showed that the method detection limits were in range of 5.7 mg/kg - 16. 0 m g /k g . The RSD of the stan dard soil sam-ples were from 1.0% to 4. 7% by 6 duplicate measurements, and the RSD of Zn, Pb, As were small than 10% . This method had a good accuracy in determination Cu,Zn,As an d Pb . A large fluctuant accuracy was observed in Cr measurement. When applying in environmental emergency monitoring, this method could help in quick identi-fying the pollutants and making predictions in the field.
作者
段雪梅
张燕波
文军
曾俊源
DUAN Xue-mei ZHANG Yan-bo WEN Jun ZENG Jun-yuan(Environmental Monitoring Station of Changzhou , Changzhou, Jiangsu 213002 , China Changzhou University,Changzhou, Jiangsu 213001 , China)
出处
《环境监测管理与技术》
CSCD
2017年第3期49-52,共4页
The Administration and Technique of Environmental Monitoring
基金
国家自然科学基金资助项目(41101491)
国家自然科学基金青年基金资助项目(21107006)
