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96- 液体膜提取弱酸性化合物的井井提取

Andreu L López-Juan¹, Anne Oldeide Hay², Frederik André Hansen²

¹GICAPC Research Group, Department of Analytical Chemistry, University of Valencia, 46100, Burjassot, Valencia, Spain; Department of Pharmacy, University of Oslo, P.O Box 1068, Blindern, 0316, Oslo, Norway.

Analytica chimica acta

|August 18, 2025

概括

这项研究引入了一种新的三相液膜提取方法,使用DMSO-水接受器来改善弱酸性分析物回收. 新系统为化学分析提供了更温和的条件和更广泛的应用.

科学领域:

分析化学分析化学
分离科学分离科学
样品的准备样品的准备

背景情况:

三相液膜提取 (LME) 用于酸提取,但面临着高pKa酸的挑战.
极端的pH条件或极性有机溶剂可能会损害稳定性和色谱相容性.
现有的方法难以有效地提取弱酸性化合物 (pK_a > 9-10).

研究的目的:

开发一个改进的三相液体膜提取系统,用于弱酸性分析物.
为了克服LME中传统性受体的局限性.
为了提高液体膜系统的适用性和稳定性.

主要方法:

使用商业96井板提取9种弱酸性模型分析物 (,双).
性受体系统与新型二甲基硫氧化物 (DMSO) -水受体系统的比较.
评估不同的液体膜,研究提取动力学.
这两种系统在人体血样本上的应用.

主要成果:

新的DMSO-水接受器系统克服了性接受器的局限性,避免了极端的pH要求.
在应用到人体血时,在两种系统中都实现了分析物的彻底提取.
DMSO-水系统表现出令人满意的分析性能,具有高线性 (r2 > 0.990) 和良好的精度 (RSD ≤15%).

结论:

开发的水性-有机-有机系统为液体膜提取提供了更温和的方法.
这种方法在三相系统中扩大了可提取的中性物种的范围.
它为分析弱酸性化合物提供了与已有的电离模式可行的替代方案.

关键词:

双醇是一种双醇.液相微提取液相微提取的方法类化合物类化合物样品的准备样品的准备支持的液体膜支.

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