Lan Tingting, Yang Guangqian, Li Jianmin, Chi Du, Zhang Kankan
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
Food Chem X. 2022 Feb 4;13:100241. doi: 10.1016/j.fochx.2022.100241. eCollection 2022 Mar 30.
A novel and accurate analytical method for the determination of tolfenpyrad in four leafy green vegetables, L., L., L. and L., was developed and applied to investigate the residue distribution and dietary risk under greenhouse conditions. The established approach was determined to be adequate, with recoveries of 79.2%-92.9% and relative standard deviations < 8%. Tolfenpyrad dissipated relatively rapidly in four leafy green vegetables. Terminal residues of tolfenpyrad were below 0.5 mg/kg (maximum residue limit for L. set by China) in leafy green vegetables collected 28 d after the last application. Due to risk quotient values < 100%, the residue levels of tolfenpyrad in leafy green vegetables collected 21 days after the last application were deemed safe for consumers. The results provide field data for the reasonable use and dietary risk assessment of tolfenpyrad in leafy green vegetables.
建立了一种新颖、准确的分析方法，用于测定四种绿叶蔬菜（分别为L.、L.、L.和L.）中的氟虫吡。该方法应用于温室条件下调查氟虫吡的残留分布及膳食风险。所建立的方法被确定为适用，回收率为79.2%-92.9%，相对标准偏差<8%。氟虫吡在四种绿叶蔬菜中的消散相对较快。在最后一次施药28天后采集的绿叶蔬菜中，氟虫吡的最终残留量低于0.5 mg/kg（中国设定的L.最大残留限量）。由于风险商值<100%，最后一次施药21天后采集的绿叶蔬菜中氟虫吡的残留水平对消费者而言被认为是安全的。研究结果为氟虫吡在绿叶蔬菜中的合理使用及膳食风险评估提供了田间数据。
