Detection in the liquid phase applying chemiluminescence

Area of Science:

• Analytical Chemistry
• Biochemistry
• Luminescence Spectroscopy

Background:

• Chemiluminescence reactions are valuable for detecting bio-pharmaceutically relevant analytes.
• These reactions can be integrated with various analytical techniques like flow injection and chromatography.
• The technique offers a sensitive detection method without requiring an external light source.

Purpose of the Study:

• To provide an overview of chemiluminescence applications in liquid-phase detection over the last decade.
• To highlight the advantages and limitations of chemiluminescence for analytical challenges.
• To explore the potential of chemiluminescence in miniaturized and flowing systems.

Main Methods:

• Review of chemiluminescence-based reactions and their application in analytical techniques.
• Analysis of chemiluminescence emission monitoring in flow injection, liquid chromatography, and capillary electrophoresis.
• Discussion of chemiluminescence-based sensors and immunoassays.

Main Results:

• Chemiluminescence allows for the determination of various analytes and reaction components (reagents, oxidants, catalysts, etc.).
• The technique demonstrates linear proportionality between emission intensity and reagent concentration.
• Applications show promise for enhanced detection sensitivity, particularly in miniaturized flowing streams.

Conclusions:

• Chemiluminescence is a powerful, low-instrumentation technique for sensitive liquid-phase analysis.
• Challenges include environmental factor dependence, selectivity issues, and signal detection timing.
• Further development is needed for optimal application, especially in capillary electrophoresis detection.