摘要
分别用原子荧光法(Atomic Fluorescence Spectrometry,AFS)和电感耦合等离子体质谱法(Inductively Coupled Plasma Mass Spectrometry,ICP-MS)测定奶粉中的锡,结果表明,这两种方法均能获得良好的线性关系,相关系数分别为0.9994和0.9996,检出限分别为0.018 mg kg^(-1)和0.0013 mg kg^(-1),其相对标准偏差均小于1.50%,加标回收率分别为90.4%~106.8%和94.2%~101.2%,参加能力验证的结果为满意,这两种方法均能很好地用于奶粉中锡的测定。其中ICP-MS法样品前处理简便、准确度高、误差小,但成本高,AFS法成本低,适合日常分析检测。
The determination of tin in milk powder by atomic fluorescence spectrometry(AFS)and inductively coupled plasma mass spectrometry(ICP-MS)showed good linearity.The correlation coefficients were 0.9994 and 0.9996 respectively.The detection limits were 0.018 mg kg^(-1) and 0.0013 mg kg^(-1) respectively.The relative standard deviations were less than 1.50%.And the recoveries were 90.4%~106.8%and 94.2%~101.2%respectively.The result of participating in the competency test was satisfactory.Both methods could be used for the determination of tin in milk powder.ICP-MS method has the advantages of simple sample pretreatment,high accuracy and small error but the cost is high.AFS method has low cost,which is suitable for daily detection and analysis.
作者
贾钗
李帅
黄挺普
李梦雨
郭倩倩
贾松涛
赵林萍
JIA Chai;LI Shuai;HUANG Tingpu;LI Mengyu;GUO Qianqian;JIA Songtao;ZHAO Linping(Henan Zhongbiao Testing Service Co.,Ltd.,Zhengzhou 450001,China;Zhengzhou Zhongdao Biotechnology Co.,Ltd.,Zhengzhou 450001,China)
出处
《现代食品》
2022年第12期196-199,共4页
Modern Food
关键词
原子荧光法
电感耦合等离子体质谱法
锡
奶粉
atomic fluorescence
inductively coupled plasma mass spectrometry
tin
milk powder