双苯氟嗪中有机溶剂残留量的毛细管GC测定

Determination of Residual Organic Solvents in Dipfluzine by Capillary GC

摘要: 目的建立了毛细管GC测定双苯氟嗪中二氯甲烷、乙醇、甲基异丁酮3种有机溶剂的残留量。方法采用HP-INNOWax毛细管柱，FID检测器，DMF为溶剂。结果 3种有机溶剂完全分离，在所考察的浓度范围内具有良好的线性，r为0.999 9~1.000 0，平均加样回收率分别为99.7%，98.7%，98.9%，RSD分别为2.1%，1.9%，2.0%。结论本法快速、灵敏、准确，适用于双苯氟嗪中有机溶剂残留量的测定。

Abstract: OBJECTIVE To establish a capillary GC method for the determination of residual organic solvents of dichloroethene, ethanol and methylisobutylketone in dipfluzine. METHODS An HP-INNOWax capillary column was used with FID detector and DMF as solvent. RESULTS The organic residuals including dichloroethene, ethanol and methylisobutylketone were separated and determined. There was a good linearity (r=0.999 9-1.000 0). The average recoveries were 99.7%, 98.7%, 98.9%, with RSD of 2.1%, 1.9% and 2.0%, respectively. CONCLUSION The method is rapid, sensitive and accurate. It can be used for the determination of various organic residuals in dipfluzine.