电感耦合等离子体-质谱法同时检测土壤8种金属元素  

Simultaneous determination of eight metal elements in soil by inductively coupled plasma mass spectrometry

作　　者：王媛[1] 梁晓军[1] 嵇心怡 汪健[1] 陆巧荣[1] 张宏斌[1] WANG Yuan;LIANG Xiao-jun;JI Xin-yi;WANG Jian;LU Qiao-rong;ZHANG Hong-bin(Kunshan Center for Disease Control and Prevention,Kunshan,Jiangsu 215300,China)

机构地区：[1]昆山市疾病预防控制中心,江苏昆山215300

出　　处：《现代预防医学》2022年第16期3025-3028,3035,共5页Modern Preventive Medicine

基　　金：昆山市社会发展科技项目(KS18050)。

摘　　要：目的建立酸消解-电感耦合等离子体-质谱法(ICP-MS)同时检测土壤中铅、镉、铬、汞、砷、镍、铜和锌。方法土壤样品用硝酸-氢氟酸体系全自动石墨消解法消解,电感耦合等离子体-质谱法测定,内标法定量。结果自动化的前处理方式增加了方法的安全性,缩短了前处理时间。方法回收率为88%~110%,精密度为0.4%~6.0%,方法检出限为0.007~0.99 mg/kg。使用GSS-23、GSS-14土壤标准物质进行质量控制,8种元素的结果均在标准值参考范围内。结论本法操作安全、快速,灵敏、准确,适用于土壤中8种金属元素的检测。Objective To establish a method for determination of eight elements including lead,cadmium,chromium,mercury,arsenic,nickel,copper,and zinc in soil by acid digestion-inductively coupled plasma mass spectrometry(ICP-MS).Methods Soil samples were digested with nitric acid-hydrofluoric acid system and determined by inductively coupled plasma-mass spectrometry.The quantifications were based on internal standard curves.Results The automatic pre-processing method increased the security of the method and shortened the pre-processing time.The recovery rates of the method were 88%to 110%,with the RSDs of 0.4%to 6.0%.The detection limits of the method were 0.007 to 0.99mg/kg.The results of the eight elements were within the reference range of the standard values using GSS-23 and GSS-14 soil standards for quality control.Conclusion The method is safe,rapid,sensitive,accurate,and suitable for the determination of eight metal elements in soil.

关 键 词：土壤 石墨消解法 电感耦合等离子体-质谱法 金属元素 

分 类 号：R124[医药卫生—环境卫生学]