Multiresidue determination of pesticide residues in honey by modified QuEChERS method and gas chromatography with electron capture detection

Journal of the Brazilian Chemical Society

Débora Orso¹  Manoel L. Martins¹  Filipe F. Donato¹  Tiele M. Rizzetti¹  Magali Kemmerich¹  Martha B. Adaime¹  Renato Zanella¹ 

[1] ,Universidade Federal de Santa Maria (UFSM) Departamento de Química Santa Maria RS ,Brazil

关键词: gas chromatography;    honey;    pesticide residues;    sample preparation;   

DOI  :  10.5935/0103-5053.20140117

来源: SciELO

【 摘 要 】

Honey can present pesticide residues due to the contamination of bees during the collection of pollen and nectar or by treatment of hives. Thus, the determination of pesticide residues in honey is of great importance, despite the difficulty due to the complexity of the matrix. In this study a new method for the determination of pesticides from different chemical groups in honey was developed and validated. Honey samples were extracted by modified QuEChERS method and analyzed by gas chromatography with electron capture detection (GC-ECD). Recovery results, evaluated at three spike levels, were between 71 and 119% for most of the compounds, with relative standard deviation (RSD) < 20%. The proposed method enables the determination at limits of detection between 3 and 6 µg kg-1, combining effective extraction and clean-up steps with good sensitivity and selectivity, and was successfully applied to the analysis of commercial honey samples.

【 授权许可】

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