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Determination of Benzophenones in River-water Samples Using Drop-based Liquid Phase Microextraction Coupled with Gas Chromatography/Mass Spectrometry

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Abstract

In this study, a fast, simple and highly sensitive method that employs liquid phase microextraction (LPME)-GC/MS was developed to analyze trace benzophenones (BPs) in river-water samples. The tip of a 10-µl microsyringe filled with toluene (3 µl) was inserted into 2 µl of a river-water sample, and fixed at 5 mm below the water surface of the sample. A toluene droplet was made on the tip of the syringe, and extraction was conducted while agitating at 500 rpm for 15 min. After extraction, 2.0 µl of the extract was put into the syringe again, and directly introduced to GC/MS. The limits of detection (S/N = 3) and quantification (S/N >10) of BPs were 10 and 50 pg ml−1, respectively. The results of a recovery test ranged over 93.3–101.1% (RSD, less than 10%; n = 6). The results of BPs determinations in the river-water samples showed that BPs (ND-68.9 pg ml−1) were detected.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan

    Noriya Okanouchi, Hidehiro Honda, Rie Ito, Koichi Saito & Hiroyuki Nakazawa

  2. Bio-Medical Standard Section, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, 305-8563, Japan

    Migaku Kawaguchi

Authors
  1. Noriya Okanouchi
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  2. Hidehiro Honda
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  3. Rie Ito
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  4. Migaku Kawaguchi
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  5. Koichi Saito
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  6. Hiroyuki Nakazawa
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Corresponding author

Correspondence to Hiroyuki Nakazawa.

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Okanouchi, N., Honda, H., Ito, R. et al. Determination of Benzophenones in River-water Samples Using Drop-based Liquid Phase Microextraction Coupled with Gas Chromatography/Mass Spectrometry. ANAL. SCI. 24, 627–630 (2008). https://doi.org/10.2116/analsci.24.627

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  • DOI: https://doi.org/10.2116/analsci.24.627

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