Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1045321
Research center of Embrapa/Collection: Embrapa Milho e Sorgo - Artigo em periódico indexado (ALICE)
Date Issued: 2016
Type of Material: Artigo em periódico indexado (ALICE)
Authors: OKUMURA, F.
AMARAL, R. B.
ORESTES, E.
SILVA, A. B. F.
MAZO, L. H.
Additional Information: 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.
Title: Electrochemical and quantum chemical investigations of the insecticide fipronil.
Publisher: Journal of the Brazilian Chemical Society, v. 27, n. 5, p. 925-932, 2016.
Language: pt_BR
Description: 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
Data Created: 2016-05-19
Appears in Collections:Artigo em periódico indexado (CNPMS)

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