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[目的]对戊唑醇在梨和土壤中的残留分析方法进行了探讨并测定了其残留消解动态。[方法]采用乙腈提取、Flolisil小柱净化、GC-μECD进行检测。[结果]梨添加标准品0.01、0.05、0.5、1 mg/kg,回收率分别为110.3%、77.8%、81.5%、74.5%;土壤中添加标准品0.01、0.05、0.5、1 m g/k g,回收率分别为110.5%、97.1%、88.4%、82.8%。通过田间试验样品检测得到的戊唑醇的消解动态方程,其在梨上半衰期为8.6 d,在土壤中半衰期为7.2 d。[结论]方法灵敏度、准确度、精密度高,仪器耗材普遍易得,能为大规模监测戊唑醇的残留情况提供参考。
[Objective] The research aimed to analyze the residue of tebuconazole in pears and soil and determine its residual digestion dynamic. [Method] The samples were extracted with acetonitrile, purified with Flolisil cartridge, and detected by GC-μECD. [Result] The standard additions of 0.01, 0.05, 0.5 and 1 mg / kg to pears were 110.3%, 77.8%, 81.5% and 74.5% The recoveries were 110.5%, 97.1%, 88.4% and 82.8% respectively. The kinetic equation of tebuconazole digestion detected in the field test samples showed a half-life of 8.6 days in pear and a half-life of 7.2 days in soil. [Conclusion] The sensitivity, accuracy and precision of the method were high, and the equipment consumables were widely available, which could provide a reference for the large-scale monitoring of tebuconazole residues.