顶空-气相色谱质谱联用法(HS-GC-MS)测试组合聚醚中的氟利昂

Headspace-Gas Chromatography Mass Spectrometry (HS-GC-MS )Test for Freon in Polyether

本实验样品经剪碎后准确称取,经顶空进样器进样后,用GCMS分析。依据目标化合物的保留时间和标准质谱图或特征离子定性定量,用内标法定量。实验表明,三种氟利昂回收率在100.5%~103.4%,线性范围好,HCFC-22、CFC-11和HCFC-141b最低检出限分别为0.014 mg/kg、0.002 mg/kg、和0.018 mg/kg,该方法可以有效的应用于水洗化妆品中硅氧烷类化合物进行定性和定量分析。能够有效地对组合聚醚中的氟利昂进行定性定量分析。

The sample in this experiment was accurately weighed after being cut,and then analyzed by GCMS after being injected by the headspace sampler.Qualitative and quantitative analysis was carried out based on the retention time of the target compound and standard mass spectra or characteristic ions,and it was quantified by internal standard method.Experiments showed that the recovery rates of the three kinds of freon were 100.5%~103.4%,and the linear range was good.The minimum detection limits of HCFC-22,CFC-11 and HCFC-141b were 0.014 mg/kg,0.002 mg/kg,and 0.018 mg/kg.This method can be effectively applied to qualitative and quantitative analysis of silicone compounds in washed cosmetics.It can effectively perform qualitative and quantitative analysis of freon in the combined polyether.