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Published on: December 15, 2015
Increased flow rate compatibility for universal acoustic flame detection in liquid chromatography
Christine Mah1, Kevin B Thurbide
1Department of Chemistry, University of Calgary, 2500 University Dr., NW, Calgary, Alberta T2N 1N4, Canada.
Journal of Chromatography. A
|December 24, 2010
Summary
The universal Acoustic Flame Detector (AFD) now supports higher liquid chromatography (LC) flow rates up to 100 μL/min by using larger bore burners. This advancement enhances detector performance and broadens LC-AFD applications.
Area of Science:
- Analytical Chemistry
- Chromatography
- Detector Technology
Background:
- The universal Acoustic Flame Detector (AFD) is a sensitive detector for liquid chromatography (LC).
- Current AFD models have limitations in flow rate tolerance, restricting their application in high-throughput LC.
- Optimizing burner design is crucial for improving AFD performance.
Purpose of the Study:
- To characterize and expand the liquid chromatography (LC) flow rate tolerance of the universal Acoustic Flame Detector (AFD).
- To investigate the impact of burner inner diameter (i.d.) on AFD performance.
- To identify optimal burner dimensions for enhanced LC-AFD applications.
Main Methods:
- Systematic characterization of AFD performance with varying burner inner diameters (i.d.).
- Measurement of upper flow rate limits and signal-to-noise ratios across different burner sizes.
- Evaluation of AFD operational range with different mobile phase temperatures.
Main Results:
- Increasing burner i.d. from 1.00 mm to 4.00 mm significantly increased the AFD upper flow rate limit from 20 to 100 μL/min.
- While signal and noise decreased with wider burners, optimal performance was achieved with a 2.30 mm i.d. burner.
- Larger bore burners enabled AFD operation over a broader range of mobile phase temperatures.
Conclusions:
- Larger bore burners substantially enhance the flow rate compatibility of the universal Acoustic Flame Detector (AFD).
- The optimized 2.30 mm i.d. burner offers a balance between flow rate tolerance and signal quality.
- This improvement facilitates advanced LC chromatography and expands potential LC-AFD applications.
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