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建立顶空气相色谱法分析氟苯咪唑中溶剂残留。采用固体顶空气相色谱法,用DB-1大口径毛细管柱,以正丙醇为内标进行定量。甲醇、乙醇、三氯甲烷的线性范围分别为4.0￣159.6μg·mL-1(r=0.9991),3.7￣147.2μg·mL-1(r=0.9993),0.9￣36.4μg·mL-1(r=0.9993),回收率分别为104.5%,106.0%,115.2%,RSD分别为2.92%,1.49%,1.89%。本方法简单、准确、灵敏度高、重现性好。
Establishment of headspace gas chromatography for the analysis of residual solvents in mebendazole. Solid headspace gas chromatography was used, and DB-1 large-diameter capillary column was used to quantify n-propanol as internal standard. The linear ranges of methanol, ethanol and trichloromethane were 4.0 ~ 159.6μg · mL -1 (r = 0.9991), 3.7 ~ 147.2μg · mL -1 (r = 0.9993) and 0.9 ~ 36.4μg · mL -1 = 0.9993). The recoveries were 104.5%, 106.0% and 115.2%, respectively, with RSDs of 2.92%, 1.49% and 1.89%, respectively. The method is simple, accurate, high sensitivity, good reproducibility.