title: Determination of trace elements in granites by inductively coupled plasma mass spectrometry.
abstract: Proposed is a simple and reliable method for the dissolution of granite and the determination of 38 elements by inductively coupled plasma mass spectrometry. One hundred milligrams of sample are digested with 1 ml of HF and 0.5 ml of HNO(3) in screw top PTFE-lined stainless steel bombs at 190 degrees C for 12 h. Insoluble residues are dissolved using 8 ml of 40% HNO(3) (v/v) heated to 110 degrees C for 3 h. Six granite standard reference materials (GSR-1, JG-2, G-2, NIM-G, SG-3, SG-1a) were studied. Analytical calibration was accomplished using aqueous standard solutions. Rhodium was used as an internal standard to correct for matrix effects and instrument drift. We report data for: Li, Be, Sc, V, Cr, Co, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Nb, Mo, Cs, Ba, Hf, Ta, W, Pb, Th, U and 14 of the rare earth elements. The recoveries for most of these elements in granite ranged from 90 to 110%.
authors.affiliation: Open Laboratory of Ore Deposit, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China.
authors.forename: Q
authors.initials: Q
authors.lastname: Liang
authors.forename: H
authors.initials: H
authors.lastname: Jing
authors.forename: D C
authors.initials: DC
authors.lastname: Gregoire