University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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C. Thommen

Abbrev:
Thommen, C.
Other Names:
Address:
Zentrale Analytik, CIBA-GEIGY AG, CH-4002 Basel, Schweiz
Phone:
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Citations 2

"Contemporary Wet-chemical Flow Analyzers For Process Control"
Trends Anal. Chem. 1989 Volume 8, Issue 2 Pages 62-66
M. Gisin and C. Thommen

Abstract: This article gives an outline of an alternative view on the underlying principles of FIA and indicates some directions for the future development of contemporary wet-chemical process analyzers.
Process control Instrumentation

"Expansion Of The Dynamic Range Of Flow Injection Analysis Systems For Complete Batch Process Monitoring"
Fresenius J. Anal. Chem. 1988 Volume 329, Issue 6 Pages 678-684
C. Thommen, M. Garn und M. Gisin

Abstract: Online monitoring of industrial processes requires a wide dynamic range, and methods to achieve this are discussed. Of two methods described in detail, the simpler involves combination of peak height measurement with electronic dilution or peak-width measurement, the latter being used when the concentration. is too high for peak height to be used. An example given is the determination of aromatic amines. For more precise measurements, gradient dilution can be used with time-variable zone sampling, as in the monitoring of glucose in fermentation processes.
Amines, aromatic Industrial Calibration Dilution Gradient technique Merging zones Peak width Process control Review Theory Zone sampling Process monitoring