Analytical and Bioanalytical Chemistry 2015-06-01

Quantification of 3-MCPD and its mercapturic metabolite in human urine: validation of an LC-MS-MS method and its application in the general population.

Roberta Andreoli, Martina Cirlini, Antonio Mutti

Index: Anal. Bioanal. Chem 407 , 4823-7, (2015)

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Abstract

A new method for the simultaneous quantitative determination in human urine of 3-monochloropropane-1,2-diol (3-MCPD), a toxic food contaminant, and its metabolite, 2,3-dihydroxypropyl mercapturic acid (DHPMA), was developed and validated. After urine dilution, the analytes were separated on an Atlantis®dC18 column and quantified by liquid chromatography-tandem mass spectrometry using isotopically labelled internal standards. The limits of quantification (S/N = 10) were 1.90 and 2.21 μg/L for 3-MCPD and DHPMA, respectively. Intra- and inter-day precision were lower than 6 % for each compound. Matrix effects were evaluated. Due to the high sensitivity and good accuracy of the method, 3-MCPD and DHPMA were found in 67 and 100 % of urine samples of healthy subjects, respectively.