5Shron W,Deteheva A,Drebler B,etal.Determination of Copper,Lead,Cadmium,Zinc and Ironin Calcium Fluoride and other Fluoride-containing Samples by Means of Direct Solid Sampling GF-AAS[J].Fresenius J Anal Chem,1998,361.
10Stegmann W,Goldstein S T,Georgieff M.Determination of magnesium in microwave-digested biological samples by mass spectrometry[J].The Analyst,1996,121:901-904.