林永熙, 程海燕, 李栋, 武杨柳, 周春然, 周翼璐, 董勤勇, 潘灿平. 吡唑醚菌酯和戊唑醇在桃中的残留与膳食风险评估[J]. 农药学学报, 2023, 25(1): 184-192. DOI: 10.16801/j.issn.1008-7303.2022.0073
    引用本文: 林永熙, 程海燕, 李栋, 武杨柳, 周春然, 周翼璐, 董勤勇, 潘灿平. 吡唑醚菌酯和戊唑醇在桃中的残留与膳食风险评估[J]. 农药学学报, 2023, 25(1): 184-192. DOI: 10.16801/j.issn.1008-7303.2022.0073
    LIN Yongxi, CHENG Haiyan, LI Dong, WU Yangliu, ZHOU Chunran, ZHOU Yilu, DONG Qinyong, PAN Canping. Residue and dietary exposure risk assessment of pyraclostrobin and tebuconazole in peach[J]. Chinese Journal of Pesticide Science, 2023, 25(1): 184-192. DOI: 10.16801/j.issn.1008-7303.2022.0073
    Citation: LIN Yongxi, CHENG Haiyan, LI Dong, WU Yangliu, ZHOU Chunran, ZHOU Yilu, DONG Qinyong, PAN Canping. Residue and dietary exposure risk assessment of pyraclostrobin and tebuconazole in peach[J]. Chinese Journal of Pesticide Science, 2023, 25(1): 184-192. DOI: 10.16801/j.issn.1008-7303.2022.0073

    吡唑醚菌酯和戊唑醇在桃中的残留与膳食风险评估

    Residue and dietary exposure risk assessment of pyraclostrobin and tebuconazole in peach

    • 摘要: 为评估桃中吡唑醚菌酯和戊唑醇残留的膳食风险,开展了8个典型地域的规范残留试验,研究了收获期2种农药残留物在桃中的最终残留。利用高效液相色谱-三重四极杆串联质谱仪 (HPLC-MS/MS),通过改进,建立了吡唑醚菌酯和戊唑醇在桃中残留的分析方法。结果表明:在0.01~4.0 mg/L质量浓度范围内,吡唑醚菌酯和戊唑醇的进样浓度与峰面积之间具有良好线性关系(R2≥0.9906)。添加水平为0.01~4.0 mg/kg时,桃中吡唑醚菌酯的回收率范围为88%~92%,相对标准偏差 (RSD) 为5.6%~18.7%,戊唑醇的回收率范围为96%~106%,RSD为0.8%~13.2%。吡唑醚菌酯和戊唑醇在桃全果中的半衰期分别为7.9~13.9 d和5.4~8.9 d;在桃全果中的残留中值 (STMR) 分别为0.037和0.053 mg/kg,最高残留值 (HR) 分别为0.16和0.24 mg/kg。距末次施药后28 d,桃中吡唑醚菌酯和戊唑醇残留量对风险商 (RQ) 的贡献率 (RQc) 分别为0.02%和0.03%,说明通过桃摄入的吡唑醚菌酯和戊唑醇对我国一般人群产生的长期膳食暴露风险较低。对于短期膳食暴露风险,吡唑醚菌酯和戊唑醇的国家估算短期摄入量 (NESTI) 分别占急性参考剂量 (ARfD) 的0.4%和2%,对于1~6岁儿童分别占2%和4%,短期膳食暴露风险亦处于可接受水平。基于本次规范残留试验结果,总体上可认为,严格按照良好农业操作规范和标签推荐的方式施用,吡唑醚菌酯和戊唑醇在桃树上使用的长期和短期膳食暴露风险均是可接受的。

       

      Abstract: To evaluate the dietary exposure risk of pyraclostrobin and tebuconazole in peach, supervised residue trials were carried out in eight typical regions, and the terminal residues of the two pesticides at harvest period were studied. A method for residue analysis of pyraclostrobin and tebuconazole in peach was revised and developed using high performance liquid chromatography-triple quadrupole mass spectrometry (HPLC-MS/MS). The results showed that there was a good linear relationship between the concentration and peak area of pyraclostrobin and tebuconazole in the range of 0.01-4.0 mg/L (R2≥0.9906). At the spiking levels of 0.01-4.0 mg/kg, the recoveries of pyraclostrobin were 88%-92% with the relative standard deviations (RSDs) of 5.6%-18.7%, and the recoveries of tebuconazole were 96%-106% with the RSDs of 0.8%-13.2%. The half-lives of pyraclostrobin and tebuconazole in peach fruits were 7.3-13.9 d and 5.4-8.9 d, respectively. The supervised trial median residues (STMR) of pyraclostrobin and tebuconazole in whole fruit of peach were 0.037 and 0.053 mg/kg, and the highest residues (HR) were 0.16 and 0.24 mg/kg, respectively. At 28 d after the last application, the contribution (RQc) of residues of pyraclostrobin and tebuconazole in peaches to the risk quotient (RQ) were 0.02% and 0.03%,respectively, which indicated that the chronic dietary exposure risk of pyraclostrobin and tebuconazole in peach to the general population in China was very low. For the short-term dietary exposure risk assessment, the national estimated short-term intake (NESTI) of pyraclostrobin and tebuconazole accounted for 0.4% and 2% of the acute reference dose (ARfD) respectively, and it was 2% and 4% for children aged 1-6 years, which indicated that the acute exposure risk was also at an acceptable level. Overall, based on the supervised residue trials and the long-term and short-term dietary exposure risk analysis, it could be considered that pyraclostrobin and tebuconazole are safe to be applied strictly in accordance with the Good Agricultural Practices and label recommendations on peach trees.

       

    /

    返回文章
    返回