Advances in capillary electrochromatography and micro-high performance liquid chromatography monolithic columns for...

Area of Science:

• Analytical Chemistry
• Separation Science

Background:

• Traditional packed-bed columns are widely used in capillary electrochromatography (CEC) and micro-high performance liquid chromatography (micro-HPLC).
• Monolithic columns have emerged as a significant alternative over the past decade.
• These columns offer advantages in terms of flow characteristics and fabrication.

Purpose of the Study:

• To present the chemistry of monolithic columns used in CEC and micro-HPLC.
• To review the most recent applications of these monolithic columns.
• To compare silica-based and organic polymer-based monolithic columns.

Main Methods:

• Review of scientific literature on monolithic column technology.
• Categorization of monoliths into silica-based and organic polymer-based types.
• Discussion of polymerization methods for organic polymer monoliths (acrylamide, styrene, acrylate, methacrylate).

Main Results:

• Monolithic columns provide a continuous porous structure, differing from packed beds.
• Silica-based monoliths and organic polymer monoliths exhibit distinct chemical properties and applications.
• Recent advancements have expanded the utility of monoliths in various separation tasks.

Conclusions:

• Monolithic columns are a viable and advancing alternative to packed beds in CEC and micro-HPLC.
• The diverse chemistry of monoliths allows for tailored applications in analytical separations.
• Continued research promises further innovation in monolithic column technology for chromatography.