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Determination of copper chromium and lead in nbs serum by inductively coupled plasma mass spectrometry


Determination of copper chromium and lead in nbs serum by inductively coupled plasma mass spectrometry



Trace Elements in Medicine 7(3): 103-107



ISSN/ISBN: 0174-7371

A method, not requiring any chemical sample preparation, is reported for the determination of Cu, Cr and Pb in serum by ICP-MS. Ten times-diluted serum was directly nebulized into the plasma for 15 seconds followed by distilled water for about one minute to clean sample introduction tubing and sampler orifice. A multichannel analyzer data acquisition system was modified to improve precision in isotope ratio measurements. For calibration the isotope dilution method is used for Cu and Pb, and standard additions method for Cr, Cu and Pb. Concentrations are determined to be within the confidence range certified by NBS for SRM-909 human serum. Cr concentration is determined to be slightly higher than the certified value.

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Accession: 007193173

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