DEVELOPMENT OF A SOLID-LIQUID EXTRACTION METHOD WITH LOW-TEMPERATURE PARTITIONING FOR THE DETERMINATION OF INSECTICIDES IN OZONIZED MAIZE GRAIN

被引：9

作者：

de Freitas, Romenique da Silva ^{[1
]}

Lopes Ribeiro de Queiroz, Maria Eliana ^{[2
]}

D'Antonino Faroni, Leda Rita ^{[1
]}

Heleno, Fernanda Fernandes ^{[2
]}

de Moura, Vanessa Vaz ^{[1
]}

机构：

[1] Univ Fed Vicosa, Dept Agr Engn, BR-36570000 Vicosa, MG, Brazil

[2] Univ Fed Vicosa, Dept Quim, BR-36570000 Vicosa, MG, Brazil

来源：

QUIMICA NOVA | 2014年 / 37卷 / 02期

关键词：

bifenthrin; pirimiphos-methyl; gas chromatography; GAS-CHROMATOGRAPHY; PESTICIDE-RESIDUES; PHASE EXTRACTION; VALIDATION; WATER; DEGRADATION; PYRETHROIDS; OPTIMIZATION; OZONATION; TOXICITY;

D O I：

10.5935/0100-4042.20140041

中图分类号：

O6 [化学];

学科分类号：

0703 ;

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.

引用

页码：238 / 243

页数：6

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