ICP-AES法测定猪骨、猪牙中超微量稀土元素

摘要

利用P507萃淋树脂预富集分离技术，结合ICP-AES法测定猪骨、猪牙中超微量稀土元 素La、Ce、Pr、Nd、Sm、Y。本法排除了基体中Ca、P的干扰，方法检出限为2.0—4.4ng/g， 回收率为80%—90%，RSD为3.1%—9.1%，适用于市售猪体内稀土水平的检测。%Using preconcentration-separation technique with P507-extraction chromat ograph resin,an inductively coupled plasma atomic emission spectrometry method for determination of ultra trace rare earth elements in the pig's bones and teeth was developed.La, Ce, Pr, Nd, Sm, Y in the samples were detected without the in terference of Ca & P.The detection limits of the method were in the range of 2.0 —4.4ng/g.The recovery rates and precision of the method were in the range of 80 %—90% and 3.1%—9.1% respectively.The method can be used to determine rare earth elements in market pigs.