Abstract
An efficient and validated approach for the determination of pesticide residues in soybeans using high-resolution gel permeation chromatography in combination with gas chromatography and electron capture detection is described. Gel permeation chromatography was used to remove interfering fatty components of soybeans before gas chromatographic analysis. The limit of quantification for the seven pesticides studied was between 9 and 46 μg kg−1. The method was applied to different soybean varieties and recoveries were determined to be between 93 and 118% with RSD values below 10%.
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Acknowledgments
We thank CNPq (Brazil) for financial support and CAPES (Brazil) for the fellowship. The authors thank Dr. André de Kok from Food and Consumer Product Safety Authority and Dr. Henk Lingeman from The Vrije Universiteit, Amsterdam (The Netherlands) for their assistance reviewing the manuscript.
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Presta, M.A., Kolberg, D.I.S., Wickert, C. et al. High Resolution Gel Permeation Chromatography Followed by GC–ECD for the Determination of Pesticide Residues in Soybeans. Chroma 69, 237–241 (2009). https://doi.org/10.1365/s10337-008-0896-8
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DOI: https://doi.org/10.1365/s10337-008-0896-8