气相色谱-原子发射光谱检测器联用技术在重油分析中的应用

Application of combined technology of gas chromatography-atomic emission detection in heavy oil analysis

综述了气相色谱-原子发射光谱检测器(GC-AED)联用技术在重油含硫化合物、含氮化合物、含氧化合物和金属有机化合物形态分析中的应用。指出:利用固相萃取和柱色谱分离技术对重油进行预处理,然后,借助全二维气相色谱技术的强分离能力,以及高分辨质谱(MS)的定性能力,同时,采用GC-AED联用技术辅助定性,能够准确分析重油含硫化合物。GC-AED联用技术定性分析了柴油中73种含氮化合物形态。在分析重油含氧化合物形态时,GC-MS联用技术用于定性分析,而GC-AED联用技术在辅助定性、定量方面发挥了重要作用。另外,该联用技术在油品添加剂和重油中金属化合物形态分析应用较多,可以分析锡、锌、镍、钒等多种金属有机化合物。

The applications of the combined technology of gas chromatography-atomic emission detection(GC-AED)in speciation analysis of sulfur compounds,nitrogen compounds,oxygen compounds and organometallic compounds in the heavy oil were reviewed with 46 references.It was pointed out that the heavy oil could be pretreated by solid phase extraction and column chromatographic separation technology,and then by virtue of the strong separation ability of comprehensive two-dimensional gas chromatography,the qualitative ability of high resolution mass spectrometry(MS),and by using GC-AED to assist the qualitative analysis,the sulfur compounds in heavy oil could be accurately analyzed.73 nitrogen compounds in diesel were qualitatively analyzed by GC-AED.GC-MS was used for qualitative analysis,and GC-AED played an important role in assisting qualitative and quantitative analysis when analyzing the forms of oxygen-containing compounds in heavy oil.In addition,the combined technology was widely used in the analysis of metal compounds in oil additives and heavy oil,such as Sn,Zn,Ni,V and other organometallic compounds.