title: Development of miniaturized hollow-fiber assisted liquid-phase microextraction with in situ acyl derivatization followed by GC-MS for the determination of benzophenones in human urine samples.
abstract: A simple and highly sensitive method that involves miniaturized hollow fiber assisted liquid-phase microextraction (HF-LPME) with in situ acyl derivatization and GC-MS was developed for the determination of benzophenone (BP) and related compounds in human urine samples. The limits of detection (S/N = 3) and quantification (S/N > 10) of BPs in human urine samples are 0.01 to 0.05 and 0.05 to 0.2 ng ml(-1), respectively. The average recoveries of BPs (n = 5) in human urine samples spiked with 10 and 50 ng ml(-1) BPs are 93.1 to 106.7% (RSD: 1.5 to 8.4%) and 96.3 to 101.5% (RSD: 3.0 to 7.7%), respectively. When the proposed method was applied to human urine samples, BPs were detected at the sub ng ml(-1) level.
authors: Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa, Tokyo, Japan. rie-ito@hoshi.ac.jp
authors: Rie
authors: R
authors: Ito
authors: Migaku
authors: M
authors: Kawaguchi
authors: Youji
authors: Y
authors: Koganei
authors: Hidehiro
authors: H
authors: Honda
authors: Noriya
authors: N
authors: Okanouchi
authors: Norihiro
authors: N
authors: Sakui
authors: Koichi
authors: K
authors: Saito
authors: Hiroyuki
authors: H
authors: Nakazawa
mesh_terms: D001577:Benzophenones / Q000652:urine*; D005591:Chemical Fractionation / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D044085:Microfluidics
chemical_list: D001577:Benzophenones