A study of the disappearance of pesticides during composting using a gas chromatography-tandem mass spectrometry technique

✍ Scribed by A Garrido Frenich; Manuel J González Rodríguez; José L Martínez Vidal; Francisco J Arrebola; María E Hernández Torres

• Book ID: 105359621
• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 182 KB
• Volume: 61
• Category: Article
• ISSN: 1526-498X
• DOI: 10.1002/ps.984

✦ Synopsis

Abstract

A simple method for multi‐residue analysis of pesticides by low‐pressure gas chromatography‐tandem mass spectrometry (LP‐GC‐MS‐MS) has been validated in compost samples. The pesticide residues were extracted from the lyophilised samples with organic solvent by stirring. No sample clean‐up was required prior to the analysis. The method was applied to determine the fate of two organochlorine pesticides (lindane and endosulfan) and two organophosphates (malathion and chlorpyrifos‐methyl) during the composting process in the reactor of a pilot plant. Malathion, chlorpyrifos‐methyl and lindane residues almost fully disappeared after 8 days of maturation in the reactor, while endosulfan residues were only partially degraded. Alongside this, a study of natural disappearance of the pesticides was carried out in the laboratory and a characteristic time profile was traced for each pesticide class. Copyright © 2004 Society of Chemical Industry