Parallel analysis device for laser microcell denudation product component and isotope and method

Abstract

The invention provides a parallel analysis device for laser microcell denudation product components and isotopes and a method. The device comprises a laser microcell denudation system, a sample feeding system, a temperature control system and an analysis detection system, wherein a product capturing device in the sample feeding system is used for condensing and enriching a gas product discharged from the laser microcell denudation system, and used for releasing the gas product through heating treatment of the temperature control system under appointed conditions; a gas path diversion device inthe analysis detection system is used for diverting a compound separated by using a chromatographic instrument according to a certain ratio, and used for further guiding the diverted compound into amass spectrometer and an isotope instrument respectively; the sample feeding temperature of a sample is controlled by the temperate control system outside the chromatographic instrument. By adopting the scheme of the invention, on-line parallel analysis on components and monomer hydrocarbon isotopes of laser microcell denudation products can be achieved, comprehensiveness and accuracy of experiment data can be ensured, and meanwhile the experiment efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of petroleum geological exploration, and in particular relates to a parallel analysis device and method for components and isotopes of laser micro-area ablation products. Background technique [0002] Traditional pyrolysis experiments can help geochemists explore and study the source rock types and their hydrocarbon generation potential, but there are still some shortcomings in this type of experiment, mainly including: (1) The system structure and performance of the instrument itself The reasons for this are that only a part of the samples with consistent thermal properties can be detected, which affects the gas chromatographic resolution of high-structural polar samples; (2) There are many experimental operations, and there are many interference factors in the experimental results; (3) The samples need to be tested Pre-processing such as crushing cannot be used for positioning analysis in the micro-scale category. ...

AI Technical Summary

Problems solved by technology

[0003] However, conventional laser microablation systems can only perform component analysis or isotope analysis on the ablation products alone

Since the laser bombardment experiment is a destructive experiment, after the laser bombardment of the sample surface or the inclusion sample, no other analysis can be performed. Therefore, component analysis and isotope analysis can only be tested separately

However, the existence of this separate test method is not aimed at the same laser bombardment product after all, so its reliability is difficult to verify

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