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A test method of methanol content in detergent using a headspace-GC method was established. A 1 g aliquot of test sample was mixed with 0.4 mg of 2-propanol and made up to 20 mL with water. Then, 5 mL of test solution was placed in a headspace vial. The vial was sealed and incubated for 30 min at 60°C, then the headspace gas was analyzed by GC-FID. The recovery from spiked 1 mg/g of methanol was 95.6-100.6%. The determination limit was 0.1 mg/g. Using this method, the methanol content in 14 kinds of detergents was quantified. Methanol was detected from two detergents at the levels of 0.13 and 0.27 mg/g.

Citation

Motoh Mutsuga, Chiye Tatebe, Yoshichika Hirahara, Yoko Kawamura. Test method of methanol content in detergent]. Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan. 2012;53(1):28-32

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PMID: 22450666

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