电感耦合等离子体原子发射光谱法测定K金首饰中的微量重金属元素  

Determination of Trace Heavy Metal Elements in K-Gold Jewelry by Inductively Coupled Plasma Atomic Emission Spectrometry

作　　者：张丽 张芳 陈雄飞 徐锁平 王乐乐 ZHANG Li;ZHANG Fang;CHEN Xiong-fei;XU Suo-ping;WANG Le-le(National Standard(Beijing)Inspection and Certification Co.,Ltd.,Beijing 100088)

机构地区：[1]国标(北京)检验认证有限公司,北京100088

出　　处：《世界有色金属》2019年第6期170-171,共2页World Nonferrous Metals

摘　　要：本文研究了运用电感耦合等离子体原子发射光谱法(以下简称ICP-AES)测定K金首饰中微量重金属元素砷、铬、镉、汞、铅的含量。在稀酸介质中选定各被测元素最佳波长测试条件,直接测定试液中的被测元素的含量。用ICPAES测定,改变了以往传统式(原子吸收光谱法、荧光光谱法、分光光度法)等的试样前处理的复杂性,灵敏度不够高不能进行多元素同时的测定形式,数据不稳定,导致其应用受限。而ICP-AES可以排除这些干扰因素,很好的实施测定,具有高选择性、简便快捷精准、重复性好、本方法测定砷、铬、镉、汞、铅的含量范围为:小于100mg/k。The determination of trace heavy metal elements As,Cr,Cd,Hg,Pb in K gold jewelry by inductively coupled plasma atomic emission spectrometry(ICP-AES)has been studied in this paper. In dilute acid medium,the optimum wavelength test conditions of each element were selected to determine the content of the tested elements in the test solution directly. By means of ICP-AES,the complexity of pre-treatment of the traditional formula(atomic absorption spectrometry,fluorescence spectrometry,spectrophotometry)was changed,and the sensitivity was not high enough for simultaneous determination of multi-elements,and the data were unstable. As a result,its application is limited. And ICPAES can be arranged. in addition to the interference factors,the method has the advantages of high selectivity,simple and fast and accurate and good repeatability,and the content range of the arsenic,the chromium,the sulfur,the mercury and the lead is less than 100 mg/ kg.

关 键 词：电感耦合等离子体原子发射光谱(ICP-AES) 基体效应 干扰因素 K金首饰 砷、铬、镉、汞、铅 盐酸-硝酸混合酸 

分 类 号：TF111[冶金工程—冶金物理化学]