摘要
本文采用HNO3密闭微波消解样品,手动添加内标碲,电感耦合等离子体质谱（ICP-MS）法分析乳制品中的铬、钼和硒。研究表明：铬和钼在0.8~20.0μg/L质量浓度范围内,硒在0.4~10.0μg/L质量浓度范围内,呈良好的线性关系。方法检出限分别为：铬0.012mg/kg、钼0.009mg/kg和硒0.009mg/kg;加标回收率在86%~115%之间,相对标准偏差在1.46%~6.81%（n=8）之间。该方法操作简单,适合乳制品中铬、钼和硒的同时测定。
An inductively coupled plasma mass spectrometry method was developed for the simultaneous determination of Cr,Mo and Se in dairy products.All samples were digested using a closed vessel microwave oven system in nitric acid,with Te as the internal standard.The study showed that linear relationship of Cr and Mo were obtained in the range of 0.8-20.0μg/L,and Se was obtained in the range of 0.4-10.0μg/L.Detection limits of quantification for Cr,Mo and Se is 0.012mg/kg 0.009mg/kg and0.009mg/kg,respectively.Recoveries（n=8）and relative standard deviation（n=8）for Cr,Mo and Se is86%-115% and 1.46%-6.81%,respectively.The method is simple and suitable for the simultaneous determination of Cr,Mo and Se in dairy products.
出处
《分析科学学报》
CAS
CSCD
北大核心
2015年第3期409-412,共4页
Journal of Analytical Science
基金
科技部国家重大科学仪器设备开发专项(No.2013YQ150557)
关键词
微波消解
电感耦合等离子体质谱法
铬
钼
硒
乳制品
Microwave assisted sample digestion
Inductively coupled plasma mass spectrometry （ICP-MS）
Chromium
Selenium
Molybdenum
Dairy products
