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2012•Academic Periodical of Farm Products ProcessingRequires access

The Method of Detecting Various Organochlorine and Pyrethroid Pesticide Residues in Tea

YE Qiu-ping

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Abstract

Pesticide residue is one of the important indexes to evaluate the quality of tea.One method based on SPE and GC is developed to determine multiple organochlorine and pyrethroid pesticide residues in tea.The results indicate that the linear relations and the correlation coefficients exits of 13 pesticides are well,respectively.As showed that the correlation coefficient is greater than 0.996 7,the lowest detection limits is 0.007 mg/kg and the ranged of recoveries is from 84.7% to 110.4%.The results suggest that this method is suitable for detecting various organochlorine and pyrethroid pesticide residues in tea.

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What this paper is about

Pesticide residue is one of the important indexes to evaluate the quality of tea.One method based on SPE and GC is developed to determine multiple organochlorine and pyrethroid pesticide residues in tea.The results indicate that the linear relations and the correlation coefficients exits of 13 pesticides are well,respectively.As showed that the correlation coefficient is greater than 0.996 7,the lowest detection limits is 0.007 mg/kg and the ranged of recoveries is from 84.7% to 110.4%.The results suggest that this method is suitable for detecting various organochlorine and pyrethroid pesticide residues in tea.

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Available abstract

Pesticide residue is one of the important indexes to evaluate the quality of tea.One method based on SPE and GC is developed to determine multiple organochlorine and pyrethroid pesticide residues in tea.The results indicate that the linear relations and the correlation coefficients exits of 13 pesticides are well,respectively.As showed that the correlation coefficient is greater than 0.996 7,the lowest detection limits is 0.007 mg/kg and the ranged of recoveries is from 84.7% to 110.4%.The results suggest that this method is suitable for detecting various organochlorine and pyrethroid pesticide residues in tea.

Key concepts: Pyrethroid, Pesticide residue, Pesticide, Chemistry, Residue (chemistry), Organochlorine pesticide, Linear correlation, Correlation coefficient

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