Desenvolvimento do método de extração sólido-líquido com partição em baixa temperatura para determinação de inseticidas em grãos de milho ozonizados

Química Nova

Romenique Da Silva De Freitas¹  Maria Eliana Lopes Ribeiro De Queiroz²  Lêda Rita D'antonino Faroni¹  Fernanda Fernandes Heleno²  Vanessa Vaz De Moura¹ 

[1] ,Universidade Federal de Viçosa Departamento de Engenharia Agrícola Viçosa MG ,Brasil

关键词: bifenthrin;    pirimiphos-methyl;    gas chromatography;   

DOI  :  10.5935/0100-4042.20140041

来源: SciELO

【 摘 要 】

The objective of this study was to optimize and validate a solid-liquid extraction method with low-temperature partitioning (SLE/LTP) for the analysis of pesticides. This method was coupled with gas chromatography (GC/ECD) and used to evaluate the degradation of bifenthrin and pirimiphos-methyl in maize grains on exposure to ozone. The optimized SLE/LTP-GC/ECD method is simple, effective and consumes low quantities of the solvent. It can be routinely used for the determination of bifenthrin and pirimiphos-methyl in maize samples. The use of this method of analysis determined that the levels of the insecticides in maize grains were reduced on exposure of the grains to the ozone gas. The observed reduction in the levels of insecticide was directly proportional to the increase in the concentration of the ozone gas.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License