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Use of Dual-column Gas Chromatography for The Determination of Organochlorine and Pyrethroid Pesticides Residues in Tea

YU You-fen

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Abstract

A dual column gas chromatography method for determination of organochlorine and pyrethroid pesticides residues in tea was developed. The samples were extracted with acetonitrile. The extracts were purified using florisil SPE column, and then separated with DB-1701 and DB-35ms capillary columns, followed by detection with μECD. The average recoveries between 72.02% and 119.23%, relative standard deviations between 0.19% and 9.56% were obtained for spiked samples. The detection limits were 0.4～40 μg/kg(except triadimenol and flutriafol).

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What this paper is about

A dual column gas chromatography method for determination of organochlorine and pyrethroid pesticides residues in tea was developed. The samples were extracted with acetonitrile. The extracts were purified using florisil SPE column, and then separated with DB-1701 and DB-35ms capillary columns, followed by detection with μECD. The average recoveries between 72.02% and 119.23%, relative standard deviations between 0.19% and 9.56% were obtained for spiked samples. The detection limits were 0.4～40 μg/kg(except triadimenol and flutriafol).

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Available abstract

A dual column gas chromatography method for determination of organochlorine and pyrethroid pesticides residues in tea was developed. The samples were extracted with acetonitrile. The extracts were purified using florisil SPE column, and then separated with DB-1701 and DB-35ms capillary columns, followed by detection with μECD. The average recoveries between 72.02% and 119.23%, relative standard deviations between 0.19% and 9.56% were obtained for spiked samples. The detection limits were 0.4～40 μg/kg(except triadimenol and flutriafol).

Key concepts: Chemistry, Chromatography, Pyrethroid, Gas chromatography, Organochlorine pesticide, Pesticide residue, Pesticide, Detection limit

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Use of Dual-column Gas Chromatography for The Determination of Organochlorine and Pyrethroid Pesticides Residues in Tea — Research Paper | ScholarLens