[1]黄林艳,刘海萍,赵彦辉,等.2,3,3’,4,4’-五氯联苯（PCB 105）溶液标准样品的研制[J].中国给水排水,2021,37(14):162.
　HUANG Lin-yan,LIU Hai-ping,ZHAO Yan-hui,et al.Development of 2,3,3’,4,4’-Pentachlorobiphenyl (PCB 105) Solution Reference Material[J].China Water & Wastewater,2021,37(14):162.
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2,3,3’,4,4’-五氯联苯（PCB 105）溶液标准样品的研制

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第14期 页码: 162 栏目: 出版日期: 2021-07-17
Title:
Development of 2,3,3’,4,4’-Pentachlorobiphenyl (PCB 105) Solution Reference Material
作者:
黄林艳1,2，刘海萍1,2，赵彦辉1,2，杨刚1,2，赵亚娴1,2，房丽萍1,2
(1.生态环境部环境发展中心环境标准样品研究所，北京100029；2.国家环境保护污染物计量和标准样品研究重点实验室，北京100029)
Author(s):
HUANG Lin-yan1,2,LIU Hai-ping1,2,ZHAO Yan-hui1,2,YANG Gang1,2,ZHAO Ya-xian1,2,FANG Li-ping1,2
(1. Institute for Environmental Reference Materials, Environmental Development Centre of the Ministry of Ecology and Environment, Beijing 100029, China; 2. State Environmental Protection Key Laboratory of Environmental Pollutant Metrology and Reference Materials, Beijing 100029, China)
关键词:
多氯联苯; 标准样品; 质量保证; 均匀性; 稳定性; 不确定度
Keywords:
polychlorinated biphenyls; reference material; quality assurance; homogeneity; stability; uncertainty
摘要:
为了满足水环境中多氯联苯分析检测过程质量保证要求，针对我国尚无2,3,3’,4,4’-五氯联苯（PCB 105）单组分有证标准样品问题，研制了异辛烷中PCB 105溶液标准样品。通过研究纯品原料中主成分相似物、水分、无机元素和挥发性物质等杂质，利用质量平衡法分析PCB 105纯品纯度。优化气相色谱分析方法，对样品的均匀性和稳定性进行研究，全面评估标准值的不确定度，并用气相色谱-质谱法对配制值进行验证。结果表明，PCB 105纯品纯度为99.79%，研制的异辛烷中PCB 105溶液标准样品均匀性良好，在22个月内室温保存条件下量值稳定。标准样品特性量值的相对扩展不确定度为2%，标准值与同类标准样品具有量值一致性，可用于水环境中PCB 105分析检测的质量控制和质量保证。
Abstract:
In order to meet the quality assurance requirements in the process of polychlorinated biphenyls analysis in water environment, a certified reference material (CRM) of 2,3,3’,4,4’-pentachlorobiphenyl (PCB 105) solution in isooctane was prepared in view of the lack of related CRM in China. Purity of PCB 105 was analyzed by mass balance method, and impurities such as principal component analogs, water, inorganic elements and volatile substances in pure raw materials were detected. The analysis method of gas chromatography was optimized, the homogeneity and stability of the samples were explored, uncertainty of the standard values was comprehensively evaluated, and the formulated values were verified by gas chromatography-mass spectrometry. The purity of PCB 105 was 99.79%. Homogeneity of the reference material of PCB 105 solution in the prepared isooctane was good, and the value was stable at room temperature for 22 months. The relative extended uncertainty of the characteristic value of the reference material was 2%, and the certified value was consistent with those of similar reference material. The prepared CRM can be used for the quality control and quality assurance during analysis of PCB 105 in water environment.
更新日期/Last Update: 2021-07-19