PMID: 16612899Apr 15, 2006Paper

Transformation and ecotoxicity of carbamic pesticides in water

Environmental Science and Pollution Research International
Maria Rosaria IesceLuigia Pascarella

Abstract

N-methylcarbamate insecticides are widely used chemicals for crop protection. This study examines the hydrolytic and photolytic cleavage of benfuracarb, carbosulfan and carbofuran under natural conditions. Their toxicity and that of the corresponding main degradation products toward aquatic organisms were evaluated. Suspensions of benfuracarb, carbosulfan and carbofuran in water were exposed to sunlight, with one set of dark controls, for 6 days, and analyzed by 1H-NMR and HPLC. Acute toxicity tests were performed on Brachionus calyciflorus, Daphnia magna, and Thamnocefalus platyurus. Chronic tests were performed on Pseudokirchneriella subcapitata, and Ceriodaphnia dubia. Under sunlight irradiation, benfuracarb and carbosulfan gave off carbofuran and carbofuran-phenol, while only carbofuran was detected in the dark experiments. The latter was degraded to phenol by exposure to sunlight. Effects of pH, humic acid and KNO3 were evaluated by kinetics on dilute solutions in the dark and by UV irradiation, which evidenced the lability of the pesticide at pH 9. All three pesticides and phenol exhibited acute and higher chronic toxicity towards the aquatic organisms tested. Investigation on the hydrolysis and photolysis of benfuracarb ...Continue Reading

Citations

Dec 5, 2008·Environmental Science and Pollution Research International·Xiyun CaiWeiping Liu
Oct 30, 2013·Environmental Science. Processes & Impacts·Monica PassanantiFabio Temussi
Jan 15, 2014·Environmental Science. Processes & Impacts·Christina K Remucal
Nov 9, 2014·Cytotechnology·Yasin ErenArzu Özkara
Nov 10, 2011·Environmental Toxicology and Chemistry·Sónia ChelinhoJose P Sousa
Aug 10, 2010·Environmental Science and Pollution Research International·Sylwia LewIzabella Babińska
Jan 16, 2015·Ecotoxicology·Raquel Aparecida MoreiraOdete Rocha
Dec 24, 2018·Ecotoxicology and Environmental Safety·Maria Rosaria IesceMarina Isidori
Apr 24, 2017·Ecotoxicology and Environmental Safety·Adrislaine S MansanoMirna H R Seleghim
Mar 5, 2016·Journal of Agricultural and Food Chemistry·Kelly J DorweilerRahul H Savant

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