Otimização dos parâmetros de extração para determinação multiresíduo de pesticidas em amostras de água empregando microextração em fase sólida

Química Nova

Emy Komatsu¹  Jorge Moreira Vaz¹ 

[1] ,Instituto de Pesquisas Energéticas e Nucleares Centro de Química e Meio Ambiente São Paulo SP

关键词: SPME;    pesticides;    GC-MS;   

DOI  :  10.1590/S0100-40422004000500008

来源: SciELO

【 摘 要 】

In this study the factors that affect the extraction of pesticide residues from water samples for their determination by solid-phase micro-extraction (SPME) and GC/MS were optimized. The fiber polymer, the extraction mode, the ionic strength, the stirring rate, the pH and the extraction time were the most significant parameters evaluated. The recovery obtained with the proposed method ranged from 94 to 110% and the sensitivity of the method, determined by calculating the detection limit (DL), ranged from 0.004 to 0.1 mug l-1. The results obtained with spiked real samples, at the 0.1 mug l-1 level, showed acceptable conformity with the expected values.

【 授权许可】

CC BY-NC   
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