Krämer Alkalde Tales, do Carmo Ruaro Peralba Maria, Alcaraz Zini Claudia, Bastos Caramão Elina
Institute of Chemistry, Federal University of Rio Grande do Sul, At. Bento Gonçalves 9500, Porto Alegre, RS 91501-970, Brazil.
J Chromatogr A. 2004 Feb 20;1027(1-2):37-40. doi: 10.1016/j.chroma.2003.09.007.
A simple method for benzene, toluene, and xylenes (BTX) quantitative analyses in human urine was developed, using headspace solid-phase microextraction (HS-SPME) and gas chromatography coupled to mass spectrometry detection in the single ion monitoring mode. The developed method is solventless, non-invasive, requires small volume of sample (1 ml), shows high selectivity, sensitivity, repeatability, and linearity (correlation coefficients >0.998), providing a useful alternative to assess human exposure to BTX compounds due to occupational reasons or eventual exposure to organic solvents. Detection limit varies from 0.28 to 0.5 ppb (v/v).
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