智能样品处理器联用微波消解-石墨炉原子吸收光谱测定鲫鱼中痕量镉方法的建立  

Determination of trace amounts of cadmium in crucians by intelligent sample processor with microwave digestion-graphite furnace atomic absorption spectrometry

作　　者：刘杰英[1] 胥艳[1] 汪凤云[1] 姜童祥 李海涛[1] 巩飚[1] 

机构地区：[1]开封市疾病预防控制中心检验科,河南开封475000

出　　处：《职业与健康》2017年第7期903-905,共3页Occupation and Health

摘　　要：目的建立智能样品处理器联用微波消解-石墨炉原子吸收光谱法测定鲫鱼中痕量镉的新方法。方法智能样品处理器联用微波消解进行样品前处理,优化选择2种消解液及其加入量,调整横向塞曼石墨炉原子吸收光谱法测定的最佳状态直接测定样品中的痕量镉。结果镉含量在0~3 ng/ml范围内线性关系良好,相关系数为0.998 0。方法检出限为0.000 35 mg/kg,RSD为2.72%~4.88%,加标回收率为94.0%~98.7%。结论该方法空白值低,灵敏度高,可简便、快速、准确地进行大批量鱼样中镉的测定。[ Objective ] To establish a new method for determining the levels of trace cadmium in crucians by intelligent sample processor with microwave digestion-graphite furnace atomic absorption spectrometry. [Methods]The samples were digested by intelligent sample processor and microwave digestion. An optimal one was selected from the two digestion reagents with appropriate dosage. Zeeman GFAAS was adjusted to the best state for the direct determination of trace cadmium. [ Results ] The cadmium con-tent was linear in the range of 0-3 ng/ml and the correlation coefficient of 0.998 0. The detection limit of the method was 0.000 35 mg/kg,RSD was among 2.72%-4.88%. The standard addition recovery was 94.0%-98.7%.[Conclusion] This method can get the low blank result,which is sensitive,simple,accurate and precise for determining the cadmium in large crucian in amount of sam-pies.

关 键 词：智能样品处理器 微波消解 石墨炉原子吸收光谱法 鲫鱼 痕量镉 

分 类 号：R115[医药卫生—公共卫生与预防医学]