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Perchlorate in milk.

Andrea B Kirk·Ernest E Smith·Kang Tian·Todd A Anderson·Purnendu K Dasgupta
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Abstract

Perchlorate was unambiguously detected by ion chromatography-suppressed conductivity (IC-CD) and/or ion chromatography-electrospray mass spectrometry (IC-MS) in seven of seven supermarket milk samples bought randomly in Lubbock, TX. Quantitation by IC-MS and IC-suppressed conductivity detection in conjunction with a preconcentration-preelution method provided comparable results. With a sample cleanup procedure that involved protein removal by ethanol and sequential passage though activated alumina and C-18 silica, the limit of detection for perchlorate in milk was 0.5 microg/L. The levels found ranged from 1.7 to 6.4 microg/L. An evaporated milk sample contained perchlorate at 1.1 +/- 0.6 microg/L level, while we did not find detectable levels in a reconstituted powdered milk sample.

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AnimalsCattleChromatography, Ion ExchangeEnvironmental MonitoringEnvironmental PollutantsMilkPerchloratesReference ValuesSodium CompoundsSpectrometry, Mass, Electrospray IonizationTexasJournal ArticleResearch Support, Non-U.S. Gov't

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Andrea B Kirk, Ernest E Smith, Kang Tian, Todd A Anderson, Purnendu K Dasgupta. 2003-11-01. Perchlorate in milk.. https://doi.org/10.1021/es034735q

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