Quimica nova | |
Development of a solid-liquid extraction method with low-temperature partitioning for the determination of insecticides in ozonized maize grain | |
Freitas, Romenique da Silva de1  Moura, Vanessa Vaz de1  Queiroz, Maria Eliana Lopes Ribeiro de1  Faroni, Lêda Rita D'Antonino1  Heleno, Fernanda Fernandes1  | |
[1] Universidade Federal de Viçosa, Viçosa, Brasil | |
关键词: bifenthrin; pirimiphos-methyl; gas chromatography.; | |
DOI : 10.5935/0100-4042.20140041 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 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
【 预 览 】
Files | Size | Format | View |
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RO201902018862117ZK.pdf | 192KB | download |