Abstract
A liquid-liquid extraction and determination of perchlorate by atomic absorption spectrometry is described. The method involves extraction of perchlorate with the Schiffs base complex [Co(BPTC)2]+, where BPTC = 2-benzoyl pyridine thiosemicarbazone, in methyl isobutyl ketone in acidic medium and subsequent analysis of cobalt in flame AAS, hence indirectly for perchlorate. The extraction efficiency is 98%. The calibration graph was found to be linear for 1.0–11.4 μg ClO −4 per ml of solvent, and the limit of detection is 30 ng ml−1. The present method is free from interference of large number of foreign ions. The method has been applied for determination of perchlorate in human blood serum samples spiked with perchlorate, urine and commercial potassium chlorate sample.
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Chattaraj, S., De, K. & Das, A.K. Indirect determination of perchlorate by atomic absorption spectrometry. Mikrochim Acta 106, 183–190 (1992). https://doi.org/10.1007/BF01242089
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DOI: https://doi.org/10.1007/BF01242089