INTRODUCTION TO ANALYTICAL SEPARATION

2013 ◽  
pp. 238-270 ◽  
Separations ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 33
Author(s):  
Xavier Garcia ◽  
Maria del Mar Sabaté ◽  
Jorge Aubets ◽  
Josep Maria Jansat ◽  
Sonia Sentellas

This paper aims to cover the main strategies based on ion mobility spectrometry (IMS) for the analysis of biological samples. The determination of endogenous and exogenous compounds in such samples is important for the understanding of the health status of individuals. For this reason, the development of new approaches that can be complementary to the ones already established (mainly based on liquid chromatography coupled to mass spectrometry) is welcomed. In this regard, ion mobility spectrometry has appeared in the analytical scenario as a powerful technique for the separation and characterization of compounds based on their mobility. IMS has been used in several areas taking advantage of its orthogonality with other analytical separation techniques, such as liquid chromatography, gas chromatography, capillary electrophoresis, or supercritical fluid chromatography. Bioanalysis is not one of the areas where IMS has been more extensively applied. However, over the last years, the interest in using this approach for the analysis of biological samples has clearly increased. This paper introduces the reader to the principles controlling the separation in IMS and reviews recent applications using this technique in the field of bioanalysis.


2016 ◽  
Vol 70 (3) ◽  
Author(s):  
Marcin Sadłowski ◽  
Barbara U. Grzmil ◽  
Krzysztof Lubkowski ◽  
Kinga Łuczka

AbstractAn investigation of the analytical separation of free urea from its additive compounds with H


2019 ◽  
Vol 102 (1) ◽  
pp. 3-22
Author(s):  
Tomasz Tuzimski ◽  
Anna Petruczynik

Abstract Ionic liquids (ILs) are a class of unique substances composed purely by cation and anions. Because of the unique properties of ILs (e.g., electric conductivity, low volatility, thermostability, and tenability), their use has attracted considerable interest, including an increasing number of publications on their use in analytical separation techniques. ILs applied as extraction solvents in liquid–liquid extraction methods and promote interactions between the analyte and solvent because of their unique chemical functional groups. In solid-phase extraction, ILs are usually used for the modification of stationary phases. ILs in LC are applied as mobile phase additives to obtain a better peak shape and high system efficiency for the analysis of ionic, especially basic, compounds. This review highlights some of the applications of ILs to extraction and analysis by LC of xenobiotics in food, environmental, and biological samples.


2015 ◽  
Vol 7 (17) ◽  
pp. 6967-6982 ◽  
Author(s):  
Sidratul Choudhury ◽  
Damian Connolly ◽  
Blánaid White

With their unique supermacroporous architecture, polyHIPEs (high internal phase emulsions) and cryogels have huge potential as analytical separation stationary phases.


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