title: [Determination of rare earth elements in fetal kidney and cerebella by microwave dissolution and inductively coupled plasma-MS spectrometry].
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.
  
  
  CONCLUSIONS
  The rare earth elements all can be tested in fetal kidney and cerebella.
authors.affiliation: Shenzhen Center for Disease Control and Prevention, Shenzhen 518020, China.
authors.forename: Xiao-li
authors.initials: XL
authors.lastname: Liu
authors.forename: Hui-min
authors.initials: HM
authors.lastname: Zhang
authors.forename: Qi-fang
authors.initials: QF
authors.lastname: Liu
authors.forename: Jian-bin
authors.initials: JB
authors.lastname: Xie
authors.forename: Zhou
authors.initials: Z
authors.lastname: Wang
mesh_terms: D002531:Cerebellum / Q000737:chemistry*; D005333:Fetus / Q000737:chemistry*; D006801:Humans; D007668:Kidney / Q000737:chemistry*; D013058:Mass Spectrometry / Q000379:methods; D008674:Metals, Rare Earth / Q000032:analysis*; D008872:Microwaves
chemical_list: D008674:Metals, Rare Earth