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  • Title: [Determination of rare earth elements in fetal kidney and cerebella by microwave dissolution and inductively coupled plasma-MS spectrometry].
    Author: Liu XL, Zhang HM, Liu QF, Xie JB, Wang Z.
    Journal: Wei Sheng Yan Jiu; 2005 Mar; 34(2):181-3. PubMed ID: 15952658.
    Abstract:
    OBJECTIVE: Study the contents of rare earth elements in normal fetal kidney and cerebella, and provide base data for the levels of rare earth elements in different phase of human development. METHODS: The samples were digested by closed-vessel microwave HNO3 + H2O2 dissolution system and directly tested by ICP-MS for the contents of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu in normal fetal kidney and cerebella. RESULTS: La mainly existed in fetal kidney (0.420 microg/kg), Ce mainly existed in fetal cerebella(0.363 microg/kg). Yb was little in both kidney and cerebella (0.103 microg/kg and 0.098 microg/kg). The contents of light rare earth elements in fetal kidney and cerebella were 1.427 microg/kg and 1.236 microg/kg, the contents of medium rare earth elements in fetal kidney and cerebella were 0.469 microg/kg and 0.432 microg/kg, and the contents of heavy rare earth elements in fetal kidney and cerebella were 1.387 microg/kg and 1.418 microg/kg. CONCLUSION: The rare earth elements all can be tested in fetal kidney and cerebella.
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