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Hollow-fiber liquid-phase microextraction based on carrier-mediated transport for determination of urinary methyl hippuric acids |
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| Authors: | Farhad Ghamari Yadollah Yamini Farshid Ghorbani Shahna Abbas Moghimbeigi |
| Institution: | 1. Excellence Centre of Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran;2. Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Iran;3. Department of Biostatistics and Epidemiology, School of Public Health and Center of Health Research, Hamedan University of Medical Sciences, Hamedan, Iran |
| Abstract: | Hollow-fiber liquid-phase microextraction based on carrier-mediated transport for analysis of methyl hippuric acids in aqueous samples is described. Under optimized conditions, relative recoveries of 83%–98% and limits of detection of 2–3 µg L?1 were obtained, with linear calibration curves for the three isomers in the range of 10–50,000 µg L?1. The method was applied for the determination of urine samples of volunteers at various working environments. |
| Keywords: | Methyl hippuric acids xylene metabolites three-phase hollow-fiber liquid-phase microextraction carrier-mediated extraction HPLC-UV |