二甲基砷溶液标准物质的研制
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摘要
以高纯度的二甲基砷酸钠为原料,采用重量法制备了二甲基砷溶液标准物质。在对制备的标准物质进行定性检测的基础上,通过高效液相色谱-电感耦合等离子体质谱法对制备的标准物质进行比较法定值。同时,对标准物质的均匀性、稳定性进行考察。二甲基砷溶液标准物质的质量浓度为22. 1μg/g,扩展不确定度为U=0. 8μg/g(k=2),有效期为12个月。
Dimethylarsinic reference material was prepared using high purity sodium dimethylarsinate as raw materials by weighting method.On basis of quality analysis,the certified value was defined by the comparing with primary reference material by means of HPLC-ICP-MS.In addition,the checking of uniformity and stability test were systematically studied.The result revealed the certified value of the reference material was 22. 1 μg/g with expanded uncertainty of U = 0. 8 μg/g( k = 2) while its valid was 12 months.
Dimethylarsinic reference material was prepared using high purity sodium dimethylarsinate as raw materials by weighting method.On basis of quality analysis,the certified value was defined by the comparing with primary reference material by means of HPLC-ICP-MS.In addition,the checking of uniformity and stability test were systematically studied.The result revealed the certified value of the reference material was 22. 1 μg/g with expanded uncertainty of U = 0. 8 μg/g( k = 2) while its valid was 12 months.
引文
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[2]李晓玉,刘丽萍,陈绍占.高效液相色谱-电感耦合等离子体质谱法测定保健食品类袋泡茶中5种砷形态[J].中国食品卫生杂志,2018,30(5):491-496.
[3]佟建冬,纪晓红,张春华,等.吉林省地方性砷中毒病区饮水砷的形态研究[J].中华地方病学杂志,2017,36(9):682-684.
[4]许小华,董江庆,陈中芹.元素形态分析技术及应用[J].辽宁化工,2009,38(8):590-592.
[5]杨慧,王富华,王旭,等.砷元素形态分析研究进展[J].广州农业科学,2010,(4):109-113.
[6]赵辉,赵华,刘原栋,等.基于国家标准物质资源共享平台探讨我国标准物质发展现状与趋势[J].化学试剂,2017,39(8):856-860.
[7]常家琪.海产品中多元素及砷形态检测技术开发与应用[D].浙江:浙江海洋大学,2018.
[8]王媛媛,路新燕,陈纯,等.国产与进口HPLC-ICP-MS联用仪器在砷形态分析方面的比较[J].中国环境监测,2018,34(4):163-168.
[9]韦超,巢静波,王军,等.元素形态分析的计量研究进展[J].分析化学,2009,37(A02):168.
[10]李海峰,刘军.食品无机成份检测量值传递与溯源体系研究[J].食品工业科技处,2010,31(11):321-324.
[11]韦超,王军,张超,等.冻干人尿中砷形态成分标准物质的制备研究[J].分析化学,2009,37(A02):232.
[12]韦超,巢静波,逯海,等.食品基体元素形态成分标准物质的研制[A].第十二届全国青年分析测试学术报告会[C].北京:中国分析测试协会,2012:35-36.
[13]ZHAO F,LIU Y M,ZHANG X Q,et al.Enzyme-assisted extraction and liquid chromatography-inductively coupled plasma mass spectrometry for the determination of arsenic species in fish[J]. J. Chromatogr. A,2018,1 573:48-58.
[14]国家质量监督检验检疫总局.标准物质定值的通用原则及统计学原理:JJF 1343—2012[S].北京:中国质检出版社,2012.