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电感耦合等离子体质谱法测定饮用纯净水中24种金属元素 被引量:2

Determination of 24 kinds of metal elements in purified water by inductively coupled plasma mass spectrometry
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摘要 目的建立电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)同时快速测定饮用纯净水中Tl、Ba、Sb、Sn、Cd、Se、Cu、Ni、Co、Mn、V、Ti、Cr、Mo、B、Al、Zn、Fe、Mg、Ca、As、Sr、Hg、Pb等24种金属元素含量的分析方法。方法饮用纯净水样品经硝酸酸化后直接进样,使用ICP-MS测定,并对方法的线性范围、检出限、精密度和回收率等进行考察。结果 24种元素的相关系数均大于0.999,线性良好,方法检出限为0.003-0.8μg/L,定量限为0.01-3μg/L。各元素加标回收率在87.0%-117.0%之间,测定结果相对标准偏差(relative standard deviation,RSD)在0.090%-5.527%之间。结论该检测方法简单、快速、准确、灵敏度高,适用于饮用纯净水中多种金属元素的测定。 Objective To establish a method for simultaneous determination of 24 kinds of metal elements including Tl, Ba, Sb, Sn, Cd, Se, Cu, Ni, Co, Mn, V, Ti, Cr, Mo, B, Al, Zn, Fe, Mg, Ca, As, Sr, Hg, Pb, etc. in purified water by inductively coupled plasma mass spectrometry(ICP-MS). Methods Water samples were detected by ICP-MS after acidification(HNO_3). At the same time, the linear relation, accuracy, precision and limit of quantitation of this method were investigated. Results It showed good linearity and the correlation coefficients of 24 kinds of elements were all greater than 0.999. The detection limits were obtained between 0.003-0.8 μg/L, and the limits of quantification were between 0.01-3 μg/L. The recovery rates were between 87.0%-117.0%, with the relative standard deviations(RSDs) between 0.090%-5.527%. Conclusion The established method is simple, rapid, accurate and sensitive, which is suitable for the determination of metal elements in purified water.
作者 许金媛 熊晓辉 吴震威 陆利霞 游京晶 XU Jin-Yuan1, XIONG Xiao-Hui2, WU Zhen-Wei1, LU Li-Xia2, YOU Jing-Jing1 (1.The State Light Industry Food Quality Supervision and Detection Station, Nanjing 210009, China; 2. College of Food Science and Light Industry, Nanjing Teeh University, Nanjing 210009, China)
出处 《食品安全质量检测学报》 CAS 2017年第11期4407-4411,共5页 Journal of Food Safety and Quality
关键词 电感耦合等离子体质谱法 饮用纯净水 金属元素 inductively coupled plasma mass spectrometry purified water metal elements
作者简介 许金媛,检验员,主要研究方向为食品分析。E—mail:476853128@qq.com;通讯作者:熊晓辉,博士,教授,主要研究方向为食品安全检测。E—mail:xxh@njtech.edu.cn
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