Advances in Capillary Electrochromatography:  Rapid and High-Efficiency Separations of PAHs

1998 ◽  
Vol 70 (22) ◽  
pp. 4787-4792 ◽  
Author(s):  
Rajeev Dadoo ◽  
Richard N. Zare ◽  
Chao Yan ◽  
Deon S. Anex
Keyword(s):  
Capillary Electrochromatography ◽  
High Efficiency ◽  
High Efficiency Separations

scholarly journals Development of a Mobile Analytical Chemistry Workstation Using a Silicon Electrochromatography Microchip and Capacitively Coupled Contactless Conductivity Detector

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 239
Author(s):  
Yineng Wang ◽  
Xi Cao ◽  
Walter Messina ◽  
Anna Hogan ◽  
Justina Ugwah ◽  
...  
Keyword(s):  
Capillary Electrochromatography ◽  
High Efficiency ◽  
Device Fabrication ◽  
Capacitively Coupled ◽  
Packaging Design ◽  
Design And Optimization ◽  
Nanofabrication Technique ◽  
On Chip ◽  
Silicon Based ◽  
Rapid Separations

Capillary electrochromatography (CEC) is a separation technique that hybridizes liquid chromatography (LC) and capillary electrophoresis (CE). The selectivity offered by LC stationary phase results in rapid separations, high efficiency, high selectivity, minimal analyte and buffer consumption. Chip-based CE and CEC separation techniques are also gaining interest, as the microchip can provide precise on-chip control over the experiment. Capacitively coupled contactless conductivity detection (C4D) offers the contactless electrode configuration, and thus is not in contact with the solutions under investigation. This prevents contamination, so it can be easy to use as well as maintain. This study investigated a chip-based CE/CEC with C4D technique, including silicon-based microfluidic device fabrication processes with packaging, design and optimization. It also examined the compatibility of the silicon-based CEC microchip interfaced with C4D. In this paper, the authors demonstrated a nanofabrication technique for a novel microchip electrochromatography (MEC) device, whose capability is to be used as a mobile analytical equipment. This research investigated using samples of potassium ions, sodium ions and aspirin (acetylsalicylic acid).

High-Speed and High-Efficiency Separations by Utilizing Monolithic Silica Capillary Columns

2011 ◽  
pp. 249-272
Author(s):  
Takeshi Hara ◽  
Kosuke Miyamoto ◽  
Satoshi Makino ◽  
Shohei Miwa ◽  
Tohru Ikegami ◽  
...  
Keyword(s):  
High Speed ◽  
High Efficiency ◽  
Capillary Columns ◽  
Monolithic Silica ◽  
High Efficiency Separations ◽  
Silica Capillary

Microcolumn liquid chromatography: a tool of potential significance in biomedical research.

1980 ◽  
Vol 26 (10) ◽  
pp. 1474-1479 ◽  
Author(s):  
M Novotny
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Biomedical Research ◽  
High Performance ◽  
Recent Progress ◽  
High Efficiency ◽  
Potential Significance ◽  
Microcolumn Liquid Chromatography ◽  
High Efficiency Separations

Abstract Recent progress in the area of microcolumn HPLC is reviewed with an emphasis on biomedically important directions. The potential of high efficiency separations, additional advantages of solvent economy, and the development of new detection and ancillary techniques of high-performance liquid chromatography are also discussed.

Clinical capillary electrophoresis

1995 ◽  
Vol 41 (4) ◽  
pp. 495-509 ◽  
Author(s):  
J P Landers
Keyword(s):  
Capillary Electrophoresis ◽  
High Efficiency ◽  
Clinical Laboratory ◽  
Protein Complexes ◽  
Electrophoretic Separation ◽  
Analytical Technique ◽  
Macromolecular Protein ◽  
Capillary Electrophoretic ◽  
The Many ◽  
High Efficiency Separations

Abstract Capillary electrophoresis is a relatively new analytical technique that has begun to have an impact in the clinical laboratory, both for routine analyses and for those that are more esoteric. Its potential for automated, rapid, high-efficiency separations makes it appealing as a replacement for some of the more labor-intensive assays carried out in electrophoretic gels and as a complement to companion techniques such as HPLC. Among the many attractive characteristics of this technology is its versatility for analyses of a diverse spectrum of analytes, ranging from small organic ions to macromolecular protein complexes or DNA. The focus of this commentary is to familiarize the clinical scientist with the instrumentation and principles of capillary electrophoretic separation and to review the recent research demonstrating the applicability of this technology to the clinical laboratory.

Simple fabrication of a multifunctional inorganic paper with high efficiency separations for both liquids and particles

2018 ◽  
Vol 6 (43) ◽  
pp. 21524-21531 ◽  
Author(s):  
Gang Wen ◽  
Xiaoyu Gao ◽  
Zhiguang Guo
Keyword(s):  
High Efficiency ◽  
Dye Adsorption ◽  
Environmentally Friendly ◽  
Adsorption Characteristics ◽  
Emulsion Separation ◽  
Pm Removal ◽  
High Efficiency Separations ◽  
Environmentally Friendly Method

An inorganic paper with simultaneous emulsion separation, PM removal and dye adsorption characteristics has been prepared by a facile and environmentally-friendly method.

scholarly journals Capillary Electrochromatography: A Powerful Tool for the Resolution of Complex Mixtures

1999 ◽  
Vol 82 (6) ◽  
pp. 1604-1612
Author(s):  
Patrick T Vallano ◽  
Vincent T Remcho
Keyword(s):  
Capillary Electrochromatography ◽  
Mobile Phase ◽  
High Efficiency ◽  
Capillary Liquid Chromatography ◽  
Complex Mixtures ◽  
Resolving Power ◽  
Separation Mechanism ◽  
Electrophoretic Separations ◽  
Capillary Electrophoretic ◽  
Capillary Liquid

Abstract Methods such as capillary electrophoresis (CE) and capillary liquid chromatography (LC) are particularly useful in the analysis of complex mixtures because of their high resolving power. Continued refinement of these techniques has led to a novel separation method known as capillary electrochromatography (CEC), also referred to as capillary electrokinetic chromatography, which is a combination of capillary LC and conventional CE. As in LC, mobile phase is transported through a column where partitioning of solutes occurs. In CEC, mobile phase flow is generated by electroosmosis, which arises when an electric potential is applied across the long axis of the capillary column. The favorable flow dynamics of electroosmosis result in higher chromatographic efficiencies in CEC relative to LC. If the species of interest are charged, a second separation mechanism is afforded by electrophoresis. CEC combines the high efficiency of capillary electrophoretic separations with the broad range of selectivity obtainable in LC. As such, CEC provides numerous advantages over other separation methods. This study introduces the theory, principles, instrumentation, and applications of this technique.

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