Characterization of capillary column stationary phases by statistical analysis of retention data

The retention factor is the key quantity for the thermodynamic analysis of the retention mechanism in chromatographic experiments. In this work, we measure retention factors for moderately polar solutes on four silica-based porous matrices as stationary phases by supercritical fluid chromatography. Elution of the solutes is only possible with binary mixtures of supercritical carbon dioxide (sc-CO2) and modifier (methanol) due to the low polarity of pure sc-CO2. The addition of modifiers makes the retention mechanism more complex and masks interactions between solute and stationary phase. In this work, we develop and validate several retention models that allow the obtaining of retention factors in modifier-free sc-CO2. Such models pave the way for quantifying adsorption interactions between polar solutes and non-swellable porous matrices in pure sc-CO2 based on retention data obtained in sc-CO2/modifier mixtures. The obtained information will thereby facilitate the understanding and design of impregnation processes, which are often performed in modifier-free conditions.

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Chromatographic characterization of hydrophilic interaction liquid chromatography stationary phases: Hydrophilicity, charge effects, structural selectivity, and separation efficiency

Journal of Chromatography A ◽

10.1016/j.chroma.2011.06.048 ◽

2011 ◽

Vol 1218 (35) ◽

pp. 5903-5919 ◽

Cited By ~ 121

Author(s):

Yuusuke Kawachi ◽

Tohru Ikegami ◽

Hirotaka Takubo ◽

Yuka Ikegami ◽

Masatoshi Miyamoto ◽

...

Keyword(s):

Liquid Chromatography ◽

Separation Efficiency ◽

Stationary Phases ◽

Hydrophilic Interaction Liquid Chromatography ◽

Hydrophilic Interaction ◽

Charge Effects ◽

Structural Selectivity ◽

Chromatographic Characterization

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Characterization of Dissolved Organic Matter from Effluents in a Dry Anaerobic Digestion Process Using Spectroscopic Techniques and Multivariate Statistical Analysis

Waste and Biomass Valorization ◽

10.1007/s12649-016-9613-2 ◽

2016 ◽

Vol 8 (3) ◽

pp. 793-802 ◽

Cited By ~ 5

Author(s):

Hao-li Qu ◽

Xu-jing Guo ◽

Yong-sheng Chen ◽

Ben-lin Dai ◽

Jing He ◽

...

Keyword(s):

Organic Matter ◽

Statistical Analysis ◽

Anaerobic Digestion ◽

Dissolved Organic Matter ◽

Multivariate Statistical Analysis ◽

Spectroscopic Techniques ◽

Multivariate Statistical ◽

Digestion Process ◽

Dry Anaerobic Digestion

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Mechanical characterization of mortar reinforced by date palm mesh fibers: Experimental and statistical analysis

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.124067 ◽

2021 ◽

Vol 300 ◽

pp. 124067

Author(s):

Hocine Khelifa ◽

Abderrezak Bezazi ◽

Haithem Boumediri ◽

Gilberto Garcia del Pino ◽

Paulo N.B. Reis ◽

...

Keyword(s):

Statistical Analysis ◽

Date Palm ◽

Mechanical Characterization

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Characterization of structure and air permeability of aromatherapic terry textile

International Journal of Clothing Science and Technology ◽

10.1108/ijcst-01-2015-0013 ◽

2016 ◽

Vol 28 (1) ◽

pp. 2-17 ◽

Cited By ~ 2

Author(s):

Salvinija Petrulyte ◽

Deimante Vankeviciute ◽

Donatas Petrulis

Keyword(s):

Statistical Analysis ◽

Physical Properties ◽

Design Methodology ◽

Air Permeability ◽

Factorial Designs ◽

Linear Type ◽

Content Type ◽

Mathematical Equations ◽

Binder Concentration

Purpose – The purpose of this paper is to investigate the physical properties of smart aromatherapic ramie/cotton terry fabrics containing microcapsules (MC) with essential Eucalyptus oil. Design/methodology/approach – Terry fabrics are manufactured by changing the weft density. The air permeability is determined for grey and microencapsulated textile. The factorial designs are made. For informative experiment the linear type of regression is analysed. Development of physical properties of microencapsulated terry fabrics is discussed. Findings – The air permeability of aromatherapic terry fabrics is determined. All statistical analysis is performed. Appropriate conclusions about the influence of fabric’s structure and microencapsulating process on terry fabric quality are made. Originality/value – To date there are no investigations concerning terry textiles with fragrance MC. This study developed analysis and empiric mathematical equations suitable for evaluating and designing terry fabrics with the air permeability required. Assessment of the influence of fabric’s weft density and binder concentration for the air permeability of terry textile is proposed.

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