化学分析计量
化學分析計量
화학분석계량
Chemical Analysis and Meterage
2015年
5期
56-58,64
,共4页
电感耦合等离子体质谱法%动物性食品%稀土元素
電感耦閤等離子體質譜法%動物性食品%稀土元素
전감우합등리자체질보법%동물성식품%희토원소
ICP-MS%food of animal origin%rare earth element
建立了同时测定动物性食品中16种稀土元素的方法。样品经电热消解后，以铑、铟和铼为内标，用电感耦合等离子体质谱法测定。各元素的信号强度与质量浓度线性相关，相关系数均大于0.9995，方法检出限在0.4～15.0 ng／L之间，测定结果的相对标准偏差为0.7%～8.7%（n=7），加标回收率为81.5%～116.1%。该方法操作简便，可用于动物性食品中稀土元素的测定。
建立瞭同時測定動物性食品中16種稀土元素的方法。樣品經電熱消解後，以銠、銦和錸為內標，用電感耦閤等離子體質譜法測定。各元素的信號彊度與質量濃度線性相關，相關繫數均大于0.9995，方法檢齣限在0.4～15.0 ng／L之間，測定結果的相對標準偏差為0.7%～8.7%（n=7），加標迴收率為81.5%～116.1%。該方法操作簡便，可用于動物性食品中稀土元素的測定。
건립료동시측정동물성식품중16충희토원소적방법。양품경전열소해후，이로、인화래위내표，용전감우합등리자체질보법측정。각원소적신호강도여질량농도선성상관，상관계수균대우0.9995，방법검출한재0.4～15.0 ng／L지간，측정결과적상대표준편차위0.7%～8.7%（n=7），가표회수솔위81.5%～116.1%。해방법조작간편，가용우동물성식품중희토원소적측정。
The simultaneous determination of 16 kinds of rare earth elements in food of animal origin was established. After wet digestion, the samples were determined by inductively coupled plasma mass spectrometry with rhodium, indium and rhenium as internal standard. The signal strength was linear with the mass concentration with the correlation coefficient more than 0.999 5, and the method detection limits were 0.4–15.0 ng/L, RSD were 0.7%–8.7% (n=7), and the recoveries were 81.5%–116.1%. This method was easy to operate, and it can be used for the determination of rare earth elements in food of animal origin.
