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自从高效毛细管气相色谱在最近十年内再一次得到发展以来,对色谱峰的定性和鉴定更显得十分迫切。已成熟的色谱检测器(除色谱—质谱联用法外),有的灵敏度高但通用性差或选择性差,也有的选择性高但通用性差。我所于1974年开始研究的气相色谱—微波等离子体发射光谱联用法就是想满足高灵敏度,高选择性和好的通用性的要求。微波等离子体具有耗电量少(～100瓦),耗气量少(约100毫升/分钟),样品用量少(毫微克级),设备和操作简单以及分析范围宽(可激发有机和无机化合物)等优点。在参考国外的工作的基础上,我所与北京第二光学仪器厂,中国科学院北京科学仪器厂,上海分析仪器厂,国营长风机器厂以及上海无线电二十六厂共同研制了SG-1型气相色谱—微波等离子体发射光谱联用仪,并于1979年把该仪器上的填充色谱柱改为用毛细管色谱柱。这种联用方法能满足毛细管色谱的高分离效率、高灵敏度和高选择性的要求。从一些未知物和已知物的分析结果可以看到此联用方法的定性和定量的功能。微波等离子体发射光谱不仅可与气相色谱联用,还可能与液相色谱相联用。
Since high-performance capillary GC has been developed once again in the last decade, the identification and characterization of chromatographic peaks is even more urgent. The mature chromatographic detector (except for chromatography - mass spectrometry), some high sensitivity but poor or poor selectivity, and some high selectivity but poor versatility. The gas chromatography coupled to microwave plasma emission spectrometry, which I started in 1974, is to meet the requirements of high sensitivity, high selectivity and good versatility. Microwave plasma has low power consumption (~ 100W), low air consumption (about 100ml / min), low sample usage (nanogram), simple equipment and ease of analysis, and wide range of analysis (excitation of organic and inorganic compounds )Etc. Based on the reference to foreign work, we have jointly developed the SG-1 model with Beijing No.2 Optical Instrument Factory, Chinese Academy of Science Beijing Scientific Instrument Factory, Shanghai Analytical Instrument Factory, Changfeng Machinery Factory and Shanghai No.26 Radio Factory. Gas chromatography - microwave plasma emission spectrometer, and in 1979 changed the filling column on the instrument to a capillary column. This combined approach meets the high separation, high sensitivity and selectivity of capillary chromatography. From the analysis results of some unknowns and known objects, we can see the qualitative and quantitative functions of this combination method. Microwave plasma emission spectrometry can not only be used with gas chromatography, but also with the liquid chromatography.