Summary
High-purity indium was analysed by spark source mass spectrometry, using electrical and photoplate detection. For the calibration of the differences in elemental sensitivity, a standard sample was prepared in which 10 impurities were determined by graphite furnace atomic absorption spectrometry. In this way accuracies of less than 40% were obtained for relatively homogeneous elements at ppm and sub-ppm level. About 40 elements could be determined with detection limits of 10 to 30 ppb. Two pattern recognition methods, principal component analysis and clustering analysis, were applied to obtain information on trace element distribution, which indicated that a number of elements were strongly spatially correlated in the analysed sample.
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On leave from: Department of Chemistry, Nanjing Normal University, Nanjing, People's Republic of China
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Liu, X.D., Van Espen, P. & Adams, F. Chemical analysis and distribution investigation of trace elements in indium matrix by spark source mass spectrometry. Z. Anal. Chem. 327, 659–664 (1987). https://doi.org/10.1007/BF00489156
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DOI: https://doi.org/10.1007/BF00489156