title: Miniaturized hollow fiber assisted liquid-phase microextraction and gas chromatography-mass spectrometry for determination of benzophenone and derivates in human urine sample.
abstract: The determination of benzophenones (BPs) in human urine sample by miniaturized hollow fiber assisted liquid-phase microextraction (HF-LPME) and gas chromatography-mass spectrometry (GC-MS) is described. As analytes, BP, its metabolites benzhydrol (BP-OH) and 2-hydroxybenzophenone (2OH-BP), and its derivatives 2-hydroxy-4-methoxybenzophenone (BP-3) and 2-hydroxy-4-methoxy-4'-methylbenzophenone (BP-10) were selected. The detection limit and the quantification limit of BPs in human urine sample are 5-10 and 20-50 pg mL(-1), respectively. The calibration curve for BPs is linear with correlation coefficient higher than 0.99 in the range of 0.02-10 or 0.05-10 ng mL(-1). The average recoveries of BPs in human urine samples spiked with 0.5 and 5 ng mL(-1) BPs are 89.8-100.2% (RSD: 2.5-9.3%) and 89.3-99.9% (RSD: 2.9-3.7%), respectively. Ten human urine samples were analyzed using the present method. BP-OH and BP-3 were detected in all the samples within the range of 0.24-5.91 and 0.43-5.17 ng mL(-1), respectively. This simple, sensitive, and selective analytical method was successfully applied to the determination of trace amounts of BPs in human urine samples.
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Hoshi University, Tokyo, Japan.
authors.forename: Migaku
authors.initials: M
authors.lastname: Kawaguchi
authors.forename: Rie
authors.initials: R
authors.lastname: Ito
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Honda
authors.forename: Youji
authors.initials: Y
authors.lastname: Koganei
authors.forename: Noriya
authors.initials: N
authors.lastname: Okanouchi
authors.forename: Koichi
authors.initials: K
authors.lastname: Saito
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Seto
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakazawa
mesh_terms: D001577:Benzophenones / Q000378:metabolism / Q000652:urine*; D005591:Chemical Fractionation / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D008904:Miniaturization; D017319:Photosensitizing Agents / Q000378:metabolism / Q000652:urine*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012997:Solvents / Q000737:chemistry; D013997:Time Factors
chemical_list: D001577:Benzophenones; D017319:Photosensitizing Agents; D012997:Solvents