摘要
对液相色谱-原子荧光联用法测定沙丁鱼罐头中甲基汞含量进行不确定度评定。依据不确定度评定原理,建立不确定度评定模型,对影响测量结果的不确定度进行评定。结果表明,当沙丁鱼罐头中甲基汞含量为0.18 mg·kg^(-1)时,其扩展不确定度为0.03 mg·kg^(-1)(k=2)。影响测量结果的不确定度主要来源于样品测量重复性、标准物质及配制、标准曲线拟合。
The uncertainty of the determination of methylmercury in canned sardines by liquid chromatography-atomic fluorescence spectrometry was evaluated.According to the uncertainty evaluation principle,the uncertainty evaluation model is established to evaluate the uncertainty that affects the measurement results.The results show that when the methylmercury content in canned sardines is 0.18 mg·kg^(-1),the expanded uncertainty is 0.03 mg·kg^(-1)(k=2).The main factors that affect the uncertainty of the measurement result are the repeatability of the sample measurement,the standard material and its preparation,and the standard curve fitting.
作者
郭倩倩
李新
康雪梅
李梦雨
贾松涛
李超
赵雪峰
赵林萍
GUO Qianqian;LI Xin;KANG Xuemei;LI Mengyu;JIA Songtao;LI Chao;ZHAO Xuefeng;ZHAO Linping(Henan Zhongbiao Testing Service Co.,Ltd.,Zhengzhou 450000,China;Zhengzhou University,Zhengzhou 450000,China)
出处
《现代食品》
2021年第12期176-180,184,共6页
Modern Food
关键词
液相色谱-原子荧光联用法
沙丁鱼罐头
甲基汞
不确定度
liquid chromatography-atomic fluorescence spectrometry
canned sardines
methylmercury
uncertainty
