Sulfide standard sample and preparation method thereof

By preparing multi-component sulfide standard samples using a high-temperature melting method, the problems of low analytical precision and single composition of sulfide standard samples in existing technologies are solved, and high-resolution micro-area information analysis and elemental isotope analysis accuracy are achieved.

CN121720801APending Publication Date: 2026-03-24CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-26
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing sulfide standard samples suffer from matrix effects that affect analytical accuracy in in-situ analysis. They are also characterized by their uniformity and fixed composition, lacking diversity and failing to meet the needs of elemental and isotopic analysis.

Method used

Sulfide standard samples were prepared by high-temperature melting method. By constructing a phase diagram related to the target element composition, the element mass ratio was determined. The mixture was then filled into a quartz tube and heat-treated to prepare sulfide standard samples with multiple compositions.

Benefits of technology

It provides multi-composition sulfide standard samples, enabling high-resolution resolution of micro-area information, reducing matrix effects, improving analytical accuracy, requiring no complex pretreatment, and suitable for elemental and isotope analysis.

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Abstract

The invention relates to the technical field of high-temperature experiment earth science, in particular to a sulfide standard sample and a preparation method thereof. The method comprises the following steps: preparing a raw material of a sulfide standard sample based on a target element component in a target natural sulfide and the content of the target element component; a quartz tube with one open end and one closed end is filled with first predetermined height quartz powder, a raw material of a sulfide standard sample, second predetermined height quartz powder or a quartz column, elemental sulfur, and third predetermined height quartz powder and / or a quartz column in sequence; sealing the filled quartz tube; and performing heat treatment on the raw materials of the sulfide standard sample in the sealed quartz tube to obtain the sulfide standard sample. According to the method, high-resolution analysis of micro-area information can be realized by utilizing the in-situ standard sample, so that irreplaceability is realized, in-situ analysis does not need a complicated pretreatment process, and a solid sample can be directly analyzed and measured.
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