Study on GC/MS (SIM) for Determination of Carbamate and Organonitrogen Pesticides in Foods with Simple Clean-up by SPE Method

• Published in: Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) Vol. 40; no. 5; pp. 382 - 390_1
• Main Authors: KAWASAKI, Masaru, INOUE, Tsuyoshi, FUKUHARA, Katsuharu, UCHIYAMA, Sadao
• Format: Journal Article
• Language: English
• Published: Japanese Society for Food Hygiene and Safety 05.10.1999
• Subjects: carbamate pesticides; gas chromatography/mass spectrometry (GC/MS); MS fragmentation; pesticides; selected ion monitoring (SIM); solid-phase extraction (SPE)
• ISSN: 0015-6426; 1882-1006
• DOI: 10.3358/shokueishi.40.5_382

Studies to develop a GC/MS (SIM) method for the determination of 34 pesticides including carbamates and organonitrogen pesticides in foods with solid-phase extraction (SPE) were conducted. Three kinds of SPE columns, a porous diatomaceous earth cartridge column, a diatomite column with a mini C18 cartridge column and a Florisil cartridge column were used successively to clean-up the extract from foods as an alternative to a separatory funnel for liquid-liquid partition. The handling was simpler than the conventional method and gave high recoveries of the pesticides. In GC/MS (SIM), 2 to 4 different fragment ions were selected for each pesticide so that the GC/MS (SIM) identification could be done more accurately for multi-residue analysis of carbamate and organonitrogen pesticides. This simpler method was applicable for 29 pesticides out of 34 with almost the same recoveries and detection limits as the conventional method.