Forensic Discrimination of Dishwashing Detergents by High-Performance Liquid Chromatography/Mass Spectrometry
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概要
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High-performance liquid chromatography/mass spectrometry (LC/MS) was applied to the forensic discrimination of dishwashing detergents. Each dishwashing detergent, commercialy available in Japan, consists of anionic, nonionic, amphoteric surfactants or a combination of these surfactants. These surfactants were separated on a reversed-phase C18 column with methanol/10 mM ammonium acetate gradient mobile phase and were identified according to their molecular-related ions and retention times. Sixty-three commercial products were analyzed and 1,928 of all possible 1,953 pairs (ca. 99%) were distinguished without using other analytical methods. All of the indistinguishable products (25 pairs) were variation of products from a same manufacture with different fragrance, and/or concentration, and a product of original equipment manufacturer (OEM). These results indicate that LC/MS is a reliable tool for the forensic discrimination of surfactants in dishwashing detergents.
- 日本法科学技術学会の論文
日本法科学技術学会 | 論文
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