Data/hora: 11/06/2024 21:20:47

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	19/05/2016	
Data da última atualização: 	06/09/2016	
Autoria: 	OKUMURA, F.; AMARAL, R. B.; ORESTES, E.; SILVA, A. B. F.; MAZO, L. H.	
Afiliação: 	FABIANO OKUMURA, CNPMS; Raquel B. Amaral, Universidade de São Paulo; Ednilsom Orestes, Universidade Federal Fluminense; Albérico B. F. Silva, Universidade de São Paulo; Luiz Henrique Mazo, Universidade de São Paulo.	
Título: 	Electrochemical and quantum chemical investigations of the insecticide fipronil.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Journal of the Brazilian Chemical Society, v. 27, n. 5, p. 925-932, 2016.	
DOI: 	10.5935/0103-5053.20150347	
Idioma: 	Português	
Conteúdo: 	This work describes an electrochemical and quantum chemical investigation of the fipronil insecticide. Cyclic voltammetry (CV) and square wave voltammetry (SWV) experiments were performed over a graphite-polyurethane (GPU) composite electrode. The fipronil molecule presents an one?electron irreversible oxidation reaction. Profiting the SWV signal a square wave stripping voltammetry (SWSV) procedure to determine the fipronil molecule in a 0.10 mol L-1 Britton-Robinson buffer solution, pH 8.0 was developed with accumulation potential and time of 0.50 V and 120 s, respectively. The limits of detection and quantification were 0.80 and 2.67 ?g L-1, respectively. Recovery tests were performed in three natural waters samples with values ranging from 99.67 to 101.37%. Quantum chemical studies showed that the nitrogen atom of the pyrazole group is the most probable oxidation site of the fipronil molecule.	
Thesagro: 	Química.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/143142/1/Eletrochemical-quantum.pdf	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (27108-1) - UPC - AP - DD -  -  -  - DIS