Method for analyzing hydrogen isotope in water of fluid inclusion

A fluid inclusion and hydrogen isotope technology, which is applied in the analysis of materials, material separation, measuring devices, etc., can solve the problems of inaccurate isotope ratios and cannot be selected, and achieve the effect of saving samples

Inactive Publication Date: 2014-12-03
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

For conventional hydrogen isotope analysis in inclusion water, in order to achieve satisfactory isotope ratio analysis results (such as the signal peak intensity of mass spectrometry samples), the amount of water required for testing is generally about 2-10uL when liquid samples are injected (that is, it is necessary to collect 2 ~10uL water sample), at this time, at least 3g of

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  • Method for analyzing hydrogen isotope in water of fluid inclusion

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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments. The embodiments of the invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work, fall within the protection scope of the invention.

[0034] In order to adapt to the limitation of actual geological sample volume (such as fluid inclusion sample volume), the present invention provides a system and method for analyzing hydrogen isotope in water of fluid inclusions by collecting vacuum burst offline water samples of inclusions (here offline / online) It is relative to IRMS. Injecting samples under the action of carrier gas through pipeline connection is called online, and sampling is not directly connect...

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Abstract

The invention discloses a method for analyzing a hydrogen isotope in water of fluid inclusion. According to the method, a water sampling instrument and a TC/EA (Temperature Conversion/Elemental Analyzer)-IRMS device are utilized; the water sampling instrument comprises a vacuum communication pipeline, a sample cracking device and a water sample collecting device, the water sample collecting device comprises a quartz collecting tube, and a capillary tube part is formed at the lower end of the quartz collecting tube; the TC/EA-IRMS device comprises a TC/EA and an IRMS, and the TC/EA comprises a high-temperature reaction tube and a gas-phase chromatographic column. With the capillary tube part and a solid feeding manner, the quantity of required samples is small, and thus the quantity of samples of the fluid inclusion can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of stable isotope analysis, in particular to a hydrogen isotope analysis method in fluid inclusion water. Background technique [0002] Fluid inclusions refer to one or more fluid inclusions that are filled and sealed in tiny holes, fissures or intergranules of minerals by rock-forming ore-forming fluids (gas-liquid-containing fluids or silicate melts) during the growth of mineral crystallization. A phase state substance (liquid, gas or solid), which has been sealed in the main mineral since its formation and has a phase boundary with the main mineral. Since the determination of the isotope composition of fluid inclusions (sometimes referred to as inclusions or inclusions) can provide unique information for the study of diagenetic and mineralization theory, paleoclimate and paleotemperature reconstruction, gemstone mine exploration, gemstone identification, etc. It has been developed rapidly and widely used...

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Application Information

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IPC IPC(8): G01N30/02G01N30/24G01N1/14
Inventor 韩文念冯连君
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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