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Preparation method of organic sulfur isotope detection sample and detection method of organic sulfur isotope

A technology for detecting samples and organic sulfur, applied in 36S isotope content, organic sulfur isotope detection samples, preparation of organic sulfur isotope detection samples, indicating the field of organic sulfur 33S in organic matter, which can solve problems such as lack of credibility and application value

Active Publication Date: 2020-06-16
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method for organosulfur to silver sulfide 33 S, 36 In the sample preparation of S isotope, sulfur fractionation is obviously one of the difficult problems in the conversion process of barium sulfate to silver sulfide, that is, in the obtained silver sulfide sample 33 S and 36 S content and barium sulfate 33 S and 36 There is a large difference between the S content, resulting in the preparation of silver sulfide samples still do not have the indicator organic matter 33 S and 36 Credibility and application value of S content

Method used

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  • Preparation method of organic sulfur isotope detection sample and detection method of organic sulfur isotope
  • Preparation method of organic sulfur isotope detection sample and detection method of organic sulfur isotope
  • Preparation method of organic sulfur isotope detection sample and detection method of organic sulfur isotope

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Experimental program
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Effect test

Embodiment 1

[0066] Step 1 Organic Matter Raw Material Converted to Barium Sulfate

[0067] First, the organic raw material kerogen is subjected to inorganic sulfur removal treatment, organic sulfur dissolution treatment and precipitation treatment to obtain barium sulfate (BaSO 4 )precipitation. The concrete process of described processing is as follows:

[0068] Mix a sufficient amount of zinc particles, 6N hydrochloric acid and chromium chloride in a flask, add organic raw material kerogen, and carry out a reduction reaction at 80°C to convert the inorganic sulfur and sulfur elements in the organic raw material into hydrogen sulfide gas and escape with Absorb in a test tube containing 10% silver nitrate solution. Filter the reaction liquid in the flask, and the filter cake is the organic matter for removing inorganic sulfur;

[0069] Carry out pressurized oxidation on the obtained organic matter from which inorganic sulfur has been removed, use Parr’s oxygen combustion bomb, add an a...

Embodiment 2

[0086] The same process as in Example 1 was carried out, except that the barium sulfate made from kerogen was replaced by the barium sulfate standard sample. The barium sulfate standard samples are commercially available, and the grades are: NBS-127, IAEA-SO-5, and IAEA-SO-6.

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Abstract

The invention provides a method for preparing an organic sulfur isotope detection sample, comprising the following steps: (1) converting the organic sulfur in the organic raw material into barium sulfate; (2) making the barium sulfate in solid acid phosphate and hydroiodic acid react to generate hydrogen sulfide gas; (3) hydrogen sulfide gas is removed and absorbed with alkaline solution to obtain an absorption solution, and (4) silver salt solution is added to the absorption solution to convert the sulfur in the absorption solution into Silver sulfide precipitates. The present invention also provides a detection method for organic sulfur isotopes in organic raw materials, including preparing detection samples according to the method of the present invention, and using SF 6 method for testing the sample.

Description

technical field [0001] The invention relates to the field of geochemistry, in particular to a method for preparing an organic sulfur isotope detection sample, an organic sulfur isotope detection sample prepared by the method, and the sample used to indicate organic sulfur in organic matter 33 S, 36 Method for S isotope content. Background technique [0002] The four elements, carbon, sulfur, nitrogen, and phosphorus, participate in the global interconnected oxidation-reduction geochemical cycles, which are closely related to the change of the earth's environment and the burial-preservation of marine organic matter. [0003] Organic-rich shale and carbonate formations are widely distributed, among which sulfur-containing organic compounds-organic sulfur is an important component. Current studies have recognized that the sulfur in bitumen, heavy oil, and condensate in oil and gas reservoirs is different from hydrocarbon elements, which can come from dispersed organic matter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62G01N21/64G01N1/28
CPCG01N27/62G01N21/64G01N1/28
Inventor 孙鹏蔡春芳唐友军彭燕燕许辰璐
Owner YANGTZE UNIVERSITY
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