微波消解原子荧光法测定食品中砷的检出限  

Detection Limit of Determination of Arsenic by Microwave Digestion-Atomic Fluorescence Spectrometry

作　　者：李月英[1] 郭志明[1] 张轶群[1] 贺光忠[1] 赵秀云[1] 

机构地区：[1]石嘴山市疾病预防控制中心,宁夏石嘴山753000

出　　处：《河南预防医学杂志》2015年第6期425-426,共2页Henan Journal of Preventive Medicine

摘　　要：目的测定出本实验室微波消解原子荧光法测定食品中砷的检出限。方法按照IUPAC的方法 ,对20个消化空白的进行测定,计算出检出限。结果本实验室食品中砷测定方法的检出限为0.018 mg/kg,与标准规程提供的检出限有一定的差距,不同的实验室,取样量、定容体积、标准曲线的范围不一致时,检出限是不同的。结论同一个检验方法 ,在不同的实验室,检出限是不同的,不能使用统一的检出限。Objective to determinate the detection limit of determination of arsenic by microwave digestion-atomic fluorescence spectrometry in our labtorary.Methods According to the IUPAC method,twenty blanks were determinated to calculate the detection limit.Results The detection limit was 0.018 mg/kg,which had gaps compared with standand regulations.The detection limit was different under different laboratories,amount,volume and liner range.Conclusions The detection limit of the same method was different in different laboraty,can’t use identical detection limit.

关 键 词：食品 微波消解 原子荧光 砷 检出限 

分 类 号：R15[医药卫生—营养与食品卫生学]