otimização e validação da técnica de extração líquido-líquido com partição em baixa temperatura (ell-pbt) para piretróides em água e análise por cg optimization and validation af liquid-liquid extraction with the low temperature partition technique (lle-ltp) for pyrethroids in water and gc analysis
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otimização e validação da técnica de extração líquido-líquido com partição em baixa temperatura (ell-pbt) para piretróides em água e análise por cg optimization and validation af liquid-liquid extraction with the low temperature partition technique (lle-ltp) for pyrethroids in water and gc analysis

;Heulla Pereira Vieira;Antônio Augusto Neves;Maria Eliana Lopes Ribeiro de Queiroz
greece and rome 2007 Vol. 30 pp. 535-540
184
vieira2007qumicaotimizao

Abstract

The liquid-liquid extraction with the low temperature partition technique was developed for the analysis of four pyrethroids in water by CG. Using a factorial design the extraction technique was optimised evaluating the effect of the variables ionic strength, contact time and proportion between sample and solvent volumes. The validation parameters sensitivity, precision, accuracy and detection and quantification limits were evaluated. The LOD and LOQ of the method varied from 1.1 to 3.2 µg L-1 and 2.7 to 9.5 µg L-1, respectively.

Keywords

validation pyrethroid

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DOI:
10.1590/S0100-40422007000300006
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