Residues of pyrethroid pesticides in local tea from Yunnan Province and health risk assessment

Abstract

Abstract: Objective To analyze residues of pyrethroid pesticides in local tea from Yunnan Province,assess the health risks of pyrethroid pesticides ingested by residents through tea. Methods The contents of 10 pyrethroid pesticides in local tea collected in Yunnan Province from 2019 to 2021 were determined by gas chromatography-mass spectrometry,and their residues were statistically analyzed. The models proposed by the world health organization（WHO） and the food and agriculture organization of the united nations（FAO） were used to assess the health risks of chronic and acute exposure. The RISK21 tool developed by the Institute of Environmental and Health Sciences of the International Society for Life Sciences was used to graphically display the size of health risks. Results The total detection rate of pyrethroid pesticides in 287 samples was 43.55%,and the exceeding standard rate was 0.70%. The detection rate（37.28%） and average value（0.033 mg/kg） of bifenthrin was the highest. The detection rate of Pu-Er ripe tea was higher,which was 56.01%. There were no statistically significant differences in the detection rate of pyrethroid pesticides among tea of different packages and different years（both P>0.05）. Among five kinds of pyrethroid pesticides detected,the proportion of chronic dietary exposure to acceptable daily intake（ADI） was 0.003%-0.063%,and the proportion of actue dietary exposure to acute reference dose（ARfD） was 0.111%-27.026%. RISK21 health risk ranking chart showed that the dietary exposure risk points are within the exposure limit. Conclusion The content of pyrethroid pesticides of tea in Yunnan Province is generally at a low level,and the results of health risk assessment show that the health risk of pyrethroid pesticides ingested through tea is low,but the detection of banned pesticides and the combined use of pesticides suggest that it is still necessary to strengthen the supervision of the production and use of pyrethroid pesticides in tea.

Key words: Pyrethroid pesticides, Tea, Residues, Yunnan

CLC Number:

R155.3

ZHANG Ting, LIU Jian-hui, LI Yan-sheng, ZHU Peng-jing, DUAN Yi-hong. Residues of pyrethroid pesticides in local tea from Yunnan Province and health risk assessment. [J]OCCUPATION AND HEALTH, 2023, 39(7): 908-913.

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