Microanalysis of Platinum in Biological Media by Graphite Furnace Atomic Absorption Spectroscopy

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Abstract
An accurate method for the analysis of platinum in biological matrix is described. The method requires minimal sample handling and pretreatment prior to injection into the graphite furnace. It is reproducible, with average recovery of 97.7% platinum in biological matrix. The data presented also demonstrate that Fe in particular (also NaCl and HNO3) significantly depresses the atomic absorption signal of platinum. Standard addition calibration curves are therefore essential for determination of platinum in biological samples.

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