浩瀚色谱（山东）应用技术开发有限公司建立了以溶液为提取溶剂，应用气相色谱同步测定漱口水中甲醇和乙醇含量的分析方法。在超声条件下，使用提取漱口水中的甲醇和乙醇，提取液经HH-624(30 m×0.32 mm，1.8 μm)毛细管色谱柱分离，利用氢火焰离子化检测器(FID检测器)进行测定。在流量1.0 mL/min，分流比10∶1，FID检测器温度250 ℃条件下，漱口水中甲醇与乙醇可以得到良好分离，峰形较好。方法的线性相关性均大于0.999；精密度RSD(n=6)为1.7%～3.3%，回收率为92.4%～103.8%；检出限均为5 mg/kg。该方法简便快捷，灵敏度较高，适用于漱口水中甲醇和乙醇含量的测定。

　　名称:毛细管柱

　　规格:30 m×0.32 mm，1.8 μm

　　型号:HH-624

　　Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established an analytical method for simultaneous determination of methanol and ethanol content in mouthwash water using gas chromatography with solution as the extraction solvent. Under ultrasound conditions, methanol and ethanol were extracted from mouthwash, and the extraction solution was passed through HH-624 (30 m) × 0.32 mm, 1.8 μ m) Capillary chromatography column separation and determination using a hydrogen flame ionization detector (FID detector). Under the conditions of a flow rate of 1.0 mL/min, a split ratio of 10:1, and a FID detector temperature of 250 ℃, methanol and ethanol in mouthwash can be well separated with a good peak shape. The linear correlation of the methods is greater than 0.999; The precision RSD (n=6) is 1.7% to 3.3%, and the recovery rate is 92.4% to 103.8%; The detection limit is all 5 mg/kg. This method is simple, fast, and highly sensitive, suitable for the determination of methanol and ethanol content in mouthwash water.

　　Name: Capillary Column

　　Specification: 30 m × 0.32 mm, 1.8 μ M

　　Model: HH-624