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Gas phase chromatography-flying time mass spectrum analysis method of carbazole compounds

A technology of time-of-flight mass spectrometry and analysis method, which is applied in the field of gas chromatography-high-resolution time-of-flight mass spectrometry analysis of carbazole compounds in crude oil, can solve problems such as interference of carbazole compounds, and achieve accurate qualitative, data integration processing and application Convenient, quantitative and reliable results

Inactive Publication Date: 2009-12-16
大庆油田有限责任公司勘探开发研究院
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Problems solved by technology

[0004] The object of the present invention is to provide a gas chromatography-high resolution time-of-flight mass spectrometry analysis method for carbazoles in crude oil, to overcome the interference of aromatics and some unknown compounds on carbazoles in existing detection methods

Method used

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  • Gas phase chromatography-flying time mass spectrum analysis method of carbazole compounds
  • Gas phase chromatography-flying time mass spectrum analysis method of carbazole compounds
  • Gas phase chromatography-flying time mass spectrum analysis method of carbazole compounds

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Embodiment Construction

[0018] Get 100-150 grams of crude oil and prepare carbazoles according to the method of document "Songliao Basin heavy oil carbazoles distribution and migration characteristics" (Daqing Petroleum Geology and Development, 2003 the 5th phase 5-7 pages); Dissolve the prepared carbazole compounds in 30-50 microliters of dichloromethane. For quantitative analysis, you need to add nonaphenylcarbazole standard sample with a concentration of 0.02-0.2mg / ml. The detection ion is 243.1048, or deuterated carbazole (Carbazole-d8) Standard sample concentration 0.02-0.2mg / ml Detection ion is 175.124 Add 5-15 microliters of the prepared standard sample to the sample to be analyzed.

[0019] Chromatographic conditions: HP-5MS quartz capillary column (60m×0.25mm×0.25μm), column length 60m. The heating program was as follows: constant temperature at 60°C for 1 minute; heating rate from 60°C to 150°C at a rate of 8°C / min; heating rate from 150°C to 320°C at a rate of 4°C / min; constant temperature...

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Abstract

The invention relates to an analysis method of a gas phase chromatography-flying time mass spectrum of carbazole compounds in crude oil. The method is characterized in that the gas phase chromatography-flying time mass spectrum is adopted to accurately extract the mass chromatograms of carbazole, methyl carbazole, dimethyl carbazole and trimethyl carbazole to overcome the influence of arene and a certain unknown compounds on the carbazole compounds in the prior detection method, thereby having the advantages of accurate qualitation, reliable quantum, data convolution procedure, convenient application, and the like.

Description

technical field [0001] The invention belongs to the field of organic geochemistry research in oil and gas exploration, and in particular relates to a gas chromatography-high resolution time-of-flight mass spectrometry analysis method for carbazole compounds in crude oil. technical background [0002] Carbazole compounds (including carbazole, methylcarbazole series, dimethylcarbazole series and trimethylcarbazole series and other compounds) have played their unique advantages in indicating oil and gas migration pathways in recent years. Shifts provide good indicators. Due to the extremely low content of carbazole compounds in crude oil, there are two ways to improve the signal-to-noise ratio in chromatography-mass spectrometry detection. One is to improve sample preparation and use various methods in sample processing to remove impurities and non-targets as much as possible. Compounds, enriching carbazole compounds, reducing interference. In terms of enrichment and separati...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/72G01N30/86
Inventor 李振广宋桂侠方伟霍秋利刘继莹
Owner 大庆油田有限责任公司勘探开发研究院
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