超声水浴提取-电感耦合等离子体质谱法测定土壤中的7种元素  

Quantification of 7 Elements in Soil by Inductively Coupled Plasma-Mass Spectrometry after Ultrasonic-Assisted Extraction

作　　者：张晨芳 刘献锋[2] 楼锦花 邓龙林 李歆琰 叶晓天 李墨 胡建 ZHANG Chenfang;LIU Xianfeng;LOU Jinhua;DENG Longlin;LI Xinyan;YE Xiaotian;LI Mo;HU Jian(Institute of Geochemical Exploration and Marine Geological Survey East China Mineral Exploration and Development Bureau,Nanjing 210007;College of Environment Engineer,Institute Technology of Nanjing,Nanjing 211167;Hebei Province Ecology and Environment Monitoring Center,Shijiazhuang 050000)

机构地区：[1]江苏省有色金属华东地质勘查局地球化学勘查与海洋地质调查研究院,江苏南京210007 [2]南京工程学院环境学院,江苏南京211167 [3]河北省生态环境监测中心,河北石家庄050000

出　　处：《分析科学学报》2022年第1期43-48,共6页Journal of Analytical Science

基　　金：南京工程学院科研资助项目(No.ZKJ202005)。

摘　　要：利用超声波水浴对土壤标准物质(GBW07405)进行消解,采用电感耦合等离子体质谱法(ICP-MS)测定Mn、Co、As、Ag、Cd、Sb和Bi的含量。研究了提取试剂、王水用量、超声提取温度和超声提取时间对测定准确度的影响。最佳消解条件为:样品100 mg,王水3 mL,于60℃超声水浴提取45 min。该方法的准确度为-3.00%~3.94%,精密度为1.22%~8.62%,优于常规水浴和电热板消解,可提高土壤中多种元素的溶出率,具有简便、安全、高效和准确等优点,适用于土壤样品中Mn、Co、As、Ag、Cd、Sb和Bi元素的快速批量检测。The certified reference materials(CRM)of soil(GBW07405)were digested by ultrasonic-assisted extraction,and the contents of Mn,Co,As,Ag,Cd,Sb and Bi were measured by inductively coupled plasma-mass spectrometry(ICP-MS).The effects of the factors in ultrasonic-assisted extraction on the accuracy of multi elements were systematically investigated.The optimum digestion conditions were as follow:100 mg of samples,3 mL of aqua regia,ultrasonic-assisted extracting at 60℃for 45 min.The relative errors of this method are-3.00%-3.94%,and the relative standard deviations are 1.22%-8.62%.The accuracy of this method is better than conventional water bath extraction and hot block digestion.The ultrasonic-assisted extraction is characterized with handy,secure,efficient and accurate,which is suitable for the batch analysis of multi elements in soil.

关 键 词：超声提取 土壤 电感耦合等离子质谱 多元素 

分 类 号：O657.63[理学—分析化学]