Análise de agrotóxicos em água usando extração líquido-líquido com partição em baixa temperatura por cromatografia líquida de alta eficiência

Química Nova

Flaviano Oliveira Silvério¹  Joyce Grazielle Siqueira Silva¹  Maria Clara Santana Aguiar¹  Ane Patrícia Cacique¹  Gevany Paulino De Pinho¹ 

[1] ,Universidade Federal de Minas Gerais Instituto de Ciências Agrárias Montes Claros MG ,Brasil

关键词: LLE-LTP;    pesticides;    HPLC-UV;   

DOI  :  10.1590/S0100-40422012001000027

来源: SciELO

【 摘 要 】

This study optimized and validated the liquid-liquid extraction technique with partition at low temperature (LLE-PLT) for identification and quantification of four pesticides (chlorpyrifos, λ-cyhalothrin, permethrin, bifenthrin) in water samples. Analyses were performed by HPLC-UV. The technique was efficient for pesticide recovery with extraction exceeding 86%. Chromatographic response was linear for the four compounds in the 10-45 µg L-1 range, with correlation coefficients greater than 0.99. Limits of detection and quantitation were less than 3.5 µg L-1 and equal to 10 µg L-1, respectively. The proposed method was applied to 29 water samples from the Jaíba Project in northern Minas Gerais.

【 授权许可】

CC BY-NC   
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