适用于直线可再生固体相提取的多功能注入器:适用于环境固体中基于循环德克斯的生物可访问性评估
David J Cocovi-Solberg1, Stephan Schnidrig2, Manuel Miró3
1University of Natural Resources and Life Sciences, Vienna, Department of Chemistry, Institute of Analytical Chemistry, Muthgasse 18, 1190, Wien, Austria.
Analytica chimica acta
|October 13, 2024
概括
这项研究引入了一种新的直线珠注射 (BI) 系统,用于高性能液体染色学 (HPLC),该系统可自动化吸附剂交换. 这种具有成本效益的方法通过使用散装吸附剂来提高样品制备,提高效率并减少浪费.
科学领域:
- 分析化学 分析化学
- 染色体学 染色体学 是一种染色学.
- 样品的准备 样品的准备
背景情况:
- 固相提取 (SPE) 对于HPLC样品制备至关重要,但在线片中面临诸如不可逆转的吸附和压缩等挑战.
- 珠子注射 (BI) 提供吸附剂更新,但缺乏使用廉价散装吸附剂的HPLC多功能,自动化工具.
研究的目的:
- 开发一种通用且可靠的HPLC工具,用于使用珠子注射进行自动直线微固相提取.
- 为了实现实时样本处理与各种散装吸附剂的自动吸附剂交换.
主要方法:
- 设计了一种液态染色注射器的新型流程路径,以执行直线微固相提取.
- 该系统自动操纵所需的床质量,通过内线保持它,并可选地通过前向流去除它.
- 吸附剂床 (大约2个小时) 3毫克) 在每次运行前进行交换,以防止携带,在流量注入分析中可能有应用.
主要成果:
- 在线微SPE实时处理样品,在70秒内捕获分析物并丢弃矩阵.
- 在16分钟内处理3200μL样品后,获得了250的平均丰富系数,保持了峰值特性.
- 证明的色谱性能与标准HPLC注射器相提并论,用于监测土壤中的持久有机污染物.
结论:
- 本文介绍了HPLC的第一个自动化直线BI-SPE,它允许实时使用批量吸附剂进行吸附剂交换,而不需要额外的硬件.
- 开发的门可以在实时自主交换吸附剂,作为不同样品的弹交换器.
- 这种方法为HPLC和其他技术中自动化样品制备提供了成本效益高,环境友好的替代方案.
相关概念视频
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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...
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01:09Ion-Exchange Chromatography
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Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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01:08Gas Chromatography: Sample Injection Systems
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In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
Two primary injection methods are used...
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