Abstract
Spark source mass spectrometry has been used in the multielemental analyses in the samples: BIR, DNC, and W-2 of the U.S. Geological Survey (USGS). The concentrations for up to 23 trace elements could be determined depending on the concentration level and matrix composition. The USGS standards W-1 and BCR-1 were used as multi-elemental standards to evaluate the necessary sensitivity factors. The determinations of U and Th concentrations of DL-1a (Canada Centre for Mineral and Energy Technology, CANMET) are based on sensitivity factors of CANMET DH-1, BL-1, BL-2, BL-3, and BL-4 standard material. The agreement between our U and Th values and those concentration values supplied from CANMET at the end of the round robin program for the standardization was found to be good.
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