由气相色谱分离和收集混合物的某一组分,进行显微红外光谱定性鉴定,是确证未知组分的有效方法之一,它能使微量分析的分离与鉴别有效地结合。基本过程:气相色谱馏出物温度较高,当一些不易挥发的待测组分流出时,碰到较低温的吸附剂时立即直接凝聚在吸附剂上,这种技术又称冷阱技术。将收集物做红外光谱分析,可准确地做出定性鉴定。用红外光谱测试常用的溴化钾作吸附剂,使收集与测试同用一载体而避免了物质转移的损失,由于采用分析 The separation and collection of a certain component of the mixture by gas chromatography and the qualitative identification by the microscopic infrared spectroscopy are one of the effective methods for confirming the unknown components, which can effectively separate and identify the micro analysis. The basic process: gas chromatography distillate higher temperature, when some of the components are not volatile volatile when flowing out, hit a lower temperature adsorbent immediately agglomerate directly on the adsorbent, this technique is also known as cold trap technology. The collected material to do infrared spectroscopy, can be accurately made qualitative identification. Infrared spectroscopy commonly used potassium bromide as adsorbent, the collection and testing with a carrier to avoid the loss of material transfer, the use of analysis