In the present geological research work, if new technical means are used continuously, it is necessary to rely on the process of geological experiment and test, so as to achieve the goal of strengthening the gradual d...In the present geological research work, if new technical means are used continuously, it is necessary to rely on the process of geological experiment and test, so as to achieve the goal of strengthening the gradual development of geological exploration, which will also urge the continuous progress of geological research. Geological experiments and tests can provide data reference for other evaluation work, and also provide theoretical and technical support for geological science research and geological exploration. And in the concrete work, geological test and geological work have a close relationship. In the early stage of geological exploration, geological test can provide important basis for the evaluation of geological work. Although the geological test data provide the experimental basis for the generation of geological test data in the present work, it will also play a very important and fundamental role in the scientific research of geological conditions and the evaluation of mineral exploration. It is necessary to improve the safety of geological work, promote the further improvement of working efficiency of geological workers, and effectively reduce the incidence of safety accidents. Therefore, it is necessary to strengthen the research of geological experiment and test technology to provide important technical support for the development of geological science industry.展开更多
Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry(GC×GC-TOFMS) is commercially available in the 1990s,with the characteristics of large peak capacity,high resolution,h...Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry(GC×GC-TOFMS) is commercially available in the 1990s,with the characteristics of large peak capacity,high resolution,high sensitivity,etc.However,its application to the petroleum and geological analyses is just emerging in China and overseas.In this research,the analytical method for petroleum aromatic fraction using GC×GC-TOFMS is set up,via the choice of the column system and optimization of setting parameters,such as temperature programming,modulation time,hot pulse time,flow rate of carrier gas,data acquisition rate and data processing.The results indicate that different polar compounds of aromatic fraction distribute as bands on structured GC×GC chromatogram.Within each band,homologous compounds appear as a roof-tile structure based on the number of substituent residues.The aromatic compounds are identified and characterized according to the GC×GC chromatogram and mass spectra.According to the polarity and the number of rings,aromatic compounds are spatially present on one chromatogram,which directly reflects the distribution characteristics of complex compounds of aromatic hydrocarbons.In addition,quantitative analysis is favored as some overlapped peaks on traditional GC-MS chromatogram have been separated completely on GC×GC.Some heterocyclic atom aromatic compounds at trace level can be clearly identified using this method,for polarity differences from other interfered aromatic compounds.The development of this method and chromatogram recognition offer petroleum geologists a practical example for the application performance of GC×GC-TOFMS.展开更多
文摘In the present geological research work, if new technical means are used continuously, it is necessary to rely on the process of geological experiment and test, so as to achieve the goal of strengthening the gradual development of geological exploration, which will also urge the continuous progress of geological research. Geological experiments and tests can provide data reference for other evaluation work, and also provide theoretical and technical support for geological science research and geological exploration. And in the concrete work, geological test and geological work have a close relationship. In the early stage of geological exploration, geological test can provide important basis for the evaluation of geological work. Although the geological test data provide the experimental basis for the generation of geological test data in the present work, it will also play a very important and fundamental role in the scientific research of geological conditions and the evaluation of mineral exploration. It is necessary to improve the safety of geological work, promote the further improvement of working efficiency of geological workers, and effectively reduce the incidence of safety accidents. Therefore, it is necessary to strengthen the research of geological experiment and test technology to provide important technical support for the development of geological science industry.
基金sponsored by the Science and Technology Management Department of China National Petroleum Corporation
文摘Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry(GC×GC-TOFMS) is commercially available in the 1990s,with the characteristics of large peak capacity,high resolution,high sensitivity,etc.However,its application to the petroleum and geological analyses is just emerging in China and overseas.In this research,the analytical method for petroleum aromatic fraction using GC×GC-TOFMS is set up,via the choice of the column system and optimization of setting parameters,such as temperature programming,modulation time,hot pulse time,flow rate of carrier gas,data acquisition rate and data processing.The results indicate that different polar compounds of aromatic fraction distribute as bands on structured GC×GC chromatogram.Within each band,homologous compounds appear as a roof-tile structure based on the number of substituent residues.The aromatic compounds are identified and characterized according to the GC×GC chromatogram and mass spectra.According to the polarity and the number of rings,aromatic compounds are spatially present on one chromatogram,which directly reflects the distribution characteristics of complex compounds of aromatic hydrocarbons.In addition,quantitative analysis is favored as some overlapped peaks on traditional GC-MS chromatogram have been separated completely on GC×GC.Some heterocyclic atom aromatic compounds at trace level can be clearly identified using this method,for polarity differences from other interfered aromatic compounds.The development of this method and chromatogram recognition offer petroleum geologists a practical example for the application performance of GC×GC-TOFMS.
