平面固体相提取用于化的分析 - 在平面薄层上进行标准化衍生物化的辐射室
Sandra Geyer1, Sören Götz1, Claudia Oellig1
1Institute of Food Chemistry, Department of Food Chemistry and Analytical Chemistry, University of Hohenheim, Garbenstraße 28, 70599 Stuttgart, Germany.
Journal of chromatography. A
|January 15, 2025
概括
这项研究开发了一种强大的高性能薄层染色学 (HPTLC) 方法,用于使用平面固相提取 (pSPE) 分析化 (CP). 优化的衍生和辐射过程确保基于含量可靠的CP量化.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 甲 (CP) 是广泛使用的工业化学品,具有潜在的环境和健康问题.
- 准确的分析方法对于监测CP水平和评估其影响至关重要.
- 高性能薄层染色学 (HPTLC) 是一种强大的分离技术,具有CP分析的潜力.
研究的目的:
- 开发和优化一个强大的HPTLC方法用于分析化抛 (CP).
- 用辐射室研究 CP 在平面薄层上的衍生过程.
- 评估该方法对具有不同链长度和含量的CP的多功能性.
主要方法:
- 开发平面固体相提取 (pSPE) 与HPTLC相结合的方法.
- 设计和使用一种新型的辐射室,用于用o-托利丁和四甲基二 (TMB) 进行CP衍生.
- 研究衍生试剂的稳定性,度和最佳照射时间.
主要成果:
- 衍生反应的效率主要取决于CP的含量,而不是链条长度.
- 观察到CP链长度和含量之间的关系,但没有确定定量相关性.
- 该方法在各种照射时间 (1-36分钟) 和CP量 (10-400 ng) 中证明了信号强度的稳定性.
- 该HPTLC-pSPE方法被证明是多功能分析CP的链长C10-C23和含量40%-70%.
结论:
- 一种强大而通用的HPTLC方法与pSPE和一种新型辐射室相结合,成功开发了用于化的分析.
- 该方法的可靠性是由其对照射时间的稳定性及其适用于广泛的CP组合物的可靠性证实.
- 这种分析方法为环境监测和化的风险评估提供了有价值的工具.
相关概念视频
Gas Chromatography: Types of Columns and Stationary Phases
475
Gas chromatography (GC) relies on stationary phases to separate and analyze components in a sample. There are two main types of stationary phases: liquid and solid. Liquid stationary phases are non-volatile, thermally stable, and chemically inert liquids coated onto the column. Solid stationary phases are particles of adsorbent material, such as silica gel or molecular sieves.
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
475
High-Performance Liquid Chromatography: Introduction
1.5K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
1.5K
Thin-Layer Chromatography (TLC): Overview
1.2K
Thin-layer chromatography (TLC) is a chromatography technique that separates compounds based on their polarity. TLC typically uses polar silica gel, a form of silicon dioxide, as the stationary phase. The silica gel contains hydroxyl (OH) groups on its surface, which form hydrogen bonds with polar compounds, influencing their adhesion to the stationary phase.
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
1.2K
Gas Chromatography: Introduction
1.4K
Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
1.4K
High-Performance Liquid Chromatography: Elution Process
415
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
415
Principles Of Column Chromatography
6.6K
The chromatography technique was first invented in 1901 by Michael S. Tswett, a Russian botanist, to separate plant pigments using organic solvents. Further, in 1941, Archer John Porter Martin and R. L. M. Synge modified the technique by packing silica gel into a column. A mixture of amino acids was then separated on the packed column using chloroform and water mixture as the mobile phase. This was the first report on column chromatography. At present, column chromatography is a widely used...
6.6K


