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Updated: Jun 18, 2026

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
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Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

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在生物样本中同时和灵敏地量化蛋白质和低分子量硫化物,聚硫化物和H2S

Jan Lj Miljkovic1, Nils Burger1, Chak Shun Yu1

  • 1Medical Research Council-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK.

Nature communications
|December 4, 2025
PubMed
概括

硫化 (H2S) 修改了硫醇,影响了抗氧化防御. 这项研究引入了一种敏感的LC-MS/MS方法来量化这些醇修饰,进步了我们对生物固硫化的理解.

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Qualitative Analysis03:46

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For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
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Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...