Gas Chromatographic and Mass Spectrometric Identification of Tetrachloroalkanoic and Dichloroalkenoic Acids in Eel Lipids

✍ Scribed by Mu, Huiling; Wesén, Clas; Sundin, Peter; Nilsson, Einar

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 871 KB
• Volume: 31
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/(sici)1096-9888(199605)31:5<517::aid-jms325>3.0.co;2-a

✦ Synopsis

Chlorinated fatty acid methyl esters, transesterified from the lipids of eel (AnguiZZa mgrriZZu; obtained from the receiving waters of a chlorine bleaching pulp mill), were studied by gas chromatography (GC) using electrolytic conductivity detection and mass spectrometry (MS) with electron impact and ammonia positive-ion chemical ionization. GC retention indices and column difference values in combination with GC/MS demonstrated the presence of isomers of methyl dichlorotetradecenoate, methyl dichlorohexadecenoate, methyl dichlorooctadecenoate and methyl tetrachlorotetradecanoate. Isomers of methyl threo, threo-tetrachlorooctadecanoate were identified by coinjection of the eel sample and synthesized reference compounds. The results were confirmed by ammonia positiveion chemical ionization high-resolution selective-ion monitoring of the ammonium adduct molecular ions.