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

Química Nova

Gustavo S. Garbellini²  Luis A. Avaca²  Giancarlo R. Salazar-banda¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP ,Brasil

关键词: boron-doped diamond;    sonoelectroanalysis;    food samples;   

DOI  :  10.1590/S0100-40422010001000039

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY-NC   
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