Micro component laser ablation isotope analyzing device and method

A technology of laser ablation and micro-components, which is used in measuring devices, analysis materials, and material analysis by electromagnetic means. , increase the value of geological application, avoid the effect of mixing

Inactive Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, the problem with this method is that the manual selection of organic microscopic components is generally difficult to achieve and labor-intensive, and the composition of the enriched components obtained by the centr

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  • Micro component laser ablation isotope analyzing device and method
  • Micro component laser ablation isotope analyzing device and method
  • Micro component laser ablation isotope analyzing device and method

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[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] The present invention is mainly an analysis device designed for laser ablation isotope analysis of different organic microscopic components in a rock sample. As shown in Figure 1, the analysis device includes a micro laser ablation system, an oxidation enrichment system and an analysis device.

[0041] The micro laser ablation system includes a laser 101, a microscope 102, and a dedicated sample cell 103. According to the research needs, the Olympus microscope 102 (Olympus’s BX51 microscope, the performance requirements are that it can perform halogen lamp white light and mercury lamp fluorescence observation, and is equipped with a special laser lens suitable for laser ablation). . The laser 101 is a Geolas Pro excimer gas laser (produced by Coherent, Germany, and the performance requirements are that the maximum laser power is 200 mJ, the laser waveleng...

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Abstract

The invention provides a micro component laser ablation isotope analyzing device and a micro component laser ablation isotope analyzing method, and belongs to the field of analysis of organic components of measured rock samples. The device comprises a laser device, a microscope, a sample cell, a high-temperature oxidation furnace, a cold trap, an isotope mass spectrometer and the like. Organic micro components in the sample cell are observed and found under the microscope and gasified and released by laser ablation, the released organic components are oxidized into carbon dioxide and water through the high-temperature oxidation furnace, the carbon dioxide is enriched in the cold trap, the carrier gas carrying the carbon dioxide enters the isotope mass spectrometer and is detected and analyzed, and the isotope values of the micro components of various organic substances are determined. By using the device, mixing of different rock component isotopes is effectively avoided, the geologic interpretation precision is improved, more targeted organic geochemical information is provided, and the oil-gas geological exploration is better served.

Description

Technical field [0001] The invention belongs to the field of analyzing the organic components of rock samples, and specifically relates to a laser ablation isotope analysis device and method for microscopic components. Background technique [0002] The organic matter components in rock samples are widely used in the research field of petroleum organic geochemistry. From the perspective of analysis objects, they can be divided into three types: soluble part (extract), insoluble part (kerogen) and whole rock analysis (such as thermal Solution analysis, isotope analysis, etc.), these organic geochemical application analysis methods can provide molecular composition data of organic fossils (such as coal, source rock, oil shale, kerogen, etc.). details as follows: [0003] 1. The analysis of the soluble part of the rock is that the large rock sample is crushed and extracted with a polar solvent (such as chloroform, etc.) to obtain asphalt A. Asphalt A can be separated by column chromat...

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Application Information

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IPC IPC(8): G01N27/62G01N1/44
Inventor 张志荣陶成饶丹施伟军张渠王强
Owner CHINA PETROLEUM & CHEM CORP
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