粉唑醇在稻田中的残留消解动态及风险评估

Residual dynamics and risk assessment of flutriafol in paddy

中文关键词:  唑醇  水稻  消解动态  最终残留  风险评估

英文关键词:lutriafol  paddy  dissipation dynamics  final residues  risk assessment

中文摘要:

      目的 粉唑醇在稻田样品中的消解趋势, 并对其最终残留水平进行风险评价。方法 开展1%粉唑醇颗粒剂在水稻上的田间试验, 采用气相色谱质谱联用仪对粉唑醇在稻田样品中的残留量进行测定。结果 粉唑醇在水稻植株、田水、土壤、稻壳和稻米空白样品中的平均添加回收率为82%~107%, 相对标准偏差为1.1%~12.9%。粉唑醇在水稻植株、田水、土壤、稻壳和稻米中的最低检出浓度分别为0.008、0.002、0.004、0.04和0.004 mg/kg。粉唑醇在水稻植株、田水和土壤中的消解半衰期分别为7.5~10.7、5.1~14.1和9.1~14.1 d。粉唑醇在稻米中的最终残留量低于0.013 mg/kg。结论 2016~2017年粉唑醇在我国普通人群中的每日理论摄入量是0.38 mg, 占日允许摄入量的61.0%, 可以认为其在稻米中的残留对一般人群健康不会产生不可接受的风险。

英文摘要:

      Objective tudy the digestion trend of fenazol in rice field samples and evaluate the risk of its final residual level. Methods he field test of flutriafol on paddy was carried out. The residue of flutriafol in paddy samples was determined by gas chromatography-mass spectrometry. Results he average addition recoveries of fluconazole in rice plants, field water, soil, rice husk and rice blank samples were 82%?107%, and the relative standard deviation were 1.1%?12.9%. The minimum detected concentrations of azolidol in rice plant, field water, soil, rice husk and rice were 0.008, 0.002, 0.004, 0.04 and 0.004 mg/kg, respectively. The digestion half-life of azolidol in rice plant, field water and soil was 7.5?10.7, 5.1?14.1 and 9.1~14.1 d, respectively. The final residual amount of fluconazole in rice was less than 0.013 mg/kg. Conclusion From 2016 to 2017, the theoretical daily intake of fenazol in the general population in China was 0.38 mg, accounting for 61.0% of the daily allowable intake. It can be considered that its residual in rice will not pose an unacceptable risk to the health of the general population.