A method for the isolation of free long-chain fatty acids in geological samples

CN117753046BActive Publication Date: 2026-06-05HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN UNIV OF SCI & TECH
Filing Date
2023-09-22
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing techniques for extracting fatty acids from geological samples are cumbersome, and the separated fatty acids have complex compositions, making it difficult to efficiently separate long-chain fatty acids, which affects the accuracy of oil and gas exploration and environmental studies.

Method used

Using steps such as Soxhlet extraction, centrifugation, packed column chromatography, and urea complexation, geological samples were treated with solvents such as n-hexane and methanol-urea solution to directly methyl esterify and separate free long-chain fatty acids.

Benefits of technology

This method enables rapid and efficient separation of long-chain fatty acids, reducing experimental time and costs, and improving the accuracy and precision of the analysis.

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Abstract

The application belongs to the technical field of organic chemistry, and provides a separation method for free long straight chain fatty acids in geological samples, which comprises the following steps: S1, crushing a geological sample, and performing Soxhlet extraction treatment to obtain organic matter in the geological sample; S2, centrifugally separating the total organic matter extracted in the step S1 to remove asphaltene; S3, adding 1ml of n-hexane to dissolve the organic matter in the centrifugal liquid obtained after the centrifugal separation in the step S2, performing component separation by filling column chromatography and elution with different solvent components to obtain a polar component; the separation method adopted by the application is fast and efficient, and the conventional Soxhlet extraction process can directly methyl esterize the long straight chain fatty acids, thereby avoiding the conventional and tedious saponification, acidification and methyl esterization experiments, and greatly shortening the experimental time and cost.
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