Chemical Safety Science, 2018, Volume 2, Issue 1, p. 220 — 226

 

Identification of hazardous substances

UDC 544.723: (547.551+543.393)-414                                           Download PDF (Rus)

DOI: 10.25514/CHS.2018.1.12896

 

DETECTION AND DETOXICATION OF MALATHION IN THE ENVIRONMENT

V. A. Davtyan² and G. O. Torosyan¹*

¹National Polytechnic University of Armenia, Yerevan, Armenia
²Water Resources Management Agency of the Republic of Armenia Ministry of Nature Protection, Yerevan, Armenia

Received January 29, 2018

Published June 25, 2018

Abstract – The results of studying detection and removal of organophosphorus pesticide chemical — malathion are presented taking into consideration its potential hazard due to an intensive use in agriculture followed by rapid spread in the environment. Detection of malathion can be carried out by a highly effective HPLC-MS/MS hybrid method, while detoxification can be performed by means of alkaline hydrolysis. It is shown that the alkaline hydrolysis results in the malathion detoxification through the Hoffmann splitting reaction of onium compounds, thus avoiding the formation of an extremely toxic malaoxon compound. 

Keywords: organophosphorus compounds, malathion, environment, detection, removal, alkaline cleavage, HPLC-MS, HPLC-MS/MS method, detoxification.

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