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BIBTEX RIS

Potencialidades do uso de ultrassom na determinação do pesticida carbaril empregando eletrodos de diamante

2010; Brazilian Chemical Society; Volume: 33; Issue: 10 Linguagem: Inglês

10.1590/s0100-40422010001000039

ISSN

1678-7064

Autores

Gustavo S. Garbellini, Luís Alberto Avaca, Giancarlo R. Salazar‐Banda,

Tópico(s)

Electrochemical sensors and biosensors

Resumo

CARBARYL USING DIAMOND ELECTRODES.The potentiality of the use of ultrasound radiation in association with a boron-doped diamond electrode was evaluated on the voltammetric determination of the pesticide carbaryl.Improvements in the sensitivity, limit of detection and reproducibility of the measurements were observed due to both, the enhancement of mass transport and the cleaning of the electrode surface provided by ultrasound.Satisfactory recovery levels for carbaryl in pure water (96-98%) and pineapple juice (89-92%) for quiescent and sonovoltammetric methodologies were obtained.These methodologies can be alternative tools for the analyses of pesticides in fruit samples, mainly the insonated condition that improve the analytical performance and dispense intermediary cleanings of the electrode surface.

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