污染土壤重金属检测标准样品在能力验证工作中的应用研究

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英文篇名：Application of Heavy Metals Polluted Soil CRM in Proficiency Testing 作者：邢小茹 ; 刘涛 ; 李帅 ; 田文 ; 田衎 英文作者：XING Xiaoru;LIU Tao;LI Shuai;TIAN Wen;TIAN Kan;Reference Materials Institute of SEPA,State Environmental Protection Key Laboratory of Environmental Pollutant Metrology and Reference Materials; 关键词：标准样品 ; 能力验证 ; 指定值 ; 均匀性 ; 稳定性 英文关键词：CRM;;PT;;consensus value;;homogeneity;;stability 中文刊名：中国环境监测 英文刊名：Environmental Monitoring in China 机构：环境保护部标准样品研究所国家环境保护污染物计量和标准样品重点实验室; 出版日期：2019-06-15 出版单位：中国环境监测 年：2019 期：03 基金：国家环境保护标准制修订项目(2012-60) 语种：中文; 页：58-63 页数：6 CN：11-2861/X ISSN：1002-6002 分类号：X833

摘要

标准样品在能力验证工作中的使用越来越广泛,但是由于能力验证对样品验证结果评价方式的不同,环境基体标准样品在能力验证工作中的应用还需进一步研究。考察了一种新研制的重金属污染地区土壤标准样品在能力验证工作中的应用。结果表明,能力验证的指定值与标准样品的标准值一致,说明能力验证统计数据无显著偏离;标准样品的均匀性和稳定性引入的不确定度小于0. 3σ(σ为能力评定标准差),不会对参加实验室的能力评定产生影响;该次能力验证参加实验室的满意率约为80%,与测试背景土壤的满意率接近,说明实验室检测污染土壤中铅、镉、镍、铜、铬的水平和检测背景土壤的能力水平相当。
        Although CRM are used in proficiency testing more widely,environmental matrix CRM applied in PT should be study further because of the estimations of CRM and PT samples. The application of a new heavy metals polluted soil CRM in PT was studied in this paper. The result showed that the certified values of soil CRM and consensus values of PT were consistent and no significant bias; the uncertainties for homogineity and stability were both less than 0. 3σ( σ was the criteria for evaluation of performance) and no negtive effect on the capability evaluation of the participants; the capabilities of participants testing heavy metals( Pb,Cd,Ni,Cu and Cr) in polluted soil and general soil were similar with satisfactory ratio over 80%.

引文

[1]中国环境科学学会学术年会论文集.污染场地土壤重金属污染评价方法研究进展[C/DL].北京:2013(2013-08-01)[2015-12-14].http://www.cnki.net.
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