Study of the removal of dichlorvos and dimethoate in a titanium dioxide mediated photocatalytic process through the examination of intermediates and the reaction mechanism

Journal of Hazardous Materials
E EvgenidouTriantafyllos Albanis

Abstract

The photocatalytic oxidation of two selected organophosphorous insecticides (dichlorvos and dimethoate) has been investigated. The aim of the study was the identification of the intermediates that are formed during photocatalytic treatment. Intermediate products from the slurry system were identified by means of solid-phase extraction (SPE) coupled to gas chromatography-mass spectroscopy techniques (GC-MS). Nine possible by-products were identified for dimethoate and three for dichlorvos. A proposed degradation pathway for each insecticide is presented, involving mainly oxidation and dealkylation reactions. The results demonstrated that some of the transient intermediates formed (oxon derivatives, disulfide, chlorinated fragments), were more toxic compared to parent compounds whereas most of them are less toxic than the parent compounds.

Citations

Feb 10, 2010·Environmental Science and Pollution Research International·Tatiana OncescuPetruta Oancea
May 23, 2013·Journal of Hazardous Materials·Silvina GomezLiliana Pierella
Feb 3, 2016·Environmental Science and Pollution Research International·Pauline JacquetEric Chabrière
Mar 30, 2012·Ultrasonics Sonochemistry·Nisharg Golash, Parag R Gogate
Sep 2, 2011·Journal of Hazardous Materials·D Neela PriyaAshok M Raichur
Dec 29, 2007·Journal of Hazardous Materials·M M Ballesteros MartínS Malato Rodríguez
Apr 15, 2015·Pesticide Biochemistry and Physiology·Intidhar Ben SalemSalwa Abid
Jul 7, 2014·Chemosphere·Langping WuHans H Richnow
Dec 14, 2011·Ultrasonics Sonochemistry·Ravi K Joshi, Parag R Gogate
May 14, 2020·Environmental Science and Pollution Research International·Marija V PergalDragan D Manojlović
Jun 19, 2009·Journal of Agricultural and Food Chemistry·Yanhong BaiBaoping Li
Feb 12, 2008·Ultrasonics Sonochemistry·Yue-Nan LiuPing-Fang Han
Jan 4, 2022·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Azra YasminSumera Shabir

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