Issue 6, 2005
From the journal:

Green Chemistry

Detoxification of malathion a chemical warfare agent analog using oxygen activation at room temperature and pressure

Christina E. Noradoun,a   Chongkham S. Mekmaysy,a   Ryan M. Hutchesona  and  I. Francis Cheng*a  

* Corresponding authors

a Department of Chemistry, University of Idaho, Moscow, Idaho
E-mail: ifcheng@uidaho.edu
Fax: +1-208-885-6173
Tel: +1-208-885-6387

Abstract

The organophosphorus insecticide malathion was selected as an analog for the chemical nerve agent, VX. Degradation of 0.44 mM malathion in a 10 mL aqueous solution containing 0.50 g granular zero valent iron (ZVI) under ambient air and pressure was complete after 4 h to the detection limit of GC-FID. The degradation kinetics demonstrate the system to be pseudo-first-order with respect to malathion disappearance with a rate constant of 0.92 h−1. The only non-polar organic intermediates detected were diethyl succinate and malaoxon, of which malaoxon is degraded to below the limit of detection of the GC-FID after 12 h. Electrospray ionization mass spectral analyses show the final reaction products to be low molecular weight carboxylic acids (propionic, oxalic and iminodiacetic acid).

Graphical abstract: Detoxification of malathion a chemical warfare agent analog using oxygen activation at room temperature and pressure

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Article information

DOI
https://doi.org/10.1039/B502860D
Article type
Communication
Submitted
25 Feb 2005
Accepted
04 May 2005
First published
12 May 2005

Green Chem., 2005,7, 426-430

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Detoxification of malathion a chemical warfare agent analog using oxygen activation at room temperature and pressure

C. E. Noradoun, C. S. Mekmaysy, R. M. Hutcheson and I. F. Cheng, Green Chem., 2005, 7, 426 DOI: 10.1039/B502860D

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