Gas sensitive field-effect transistors: applications to the monitoring of biotechnological processes

authored by

Roland Ulber, Thomas Kullick, Oliver Thordsen, Adnan Ritzka, Florian Irtel, Bernd Hitzmann, Thomas Scheper

Abstract

In this paper, new on-line sensors based on pH-sensitive field-effect transitors (pH-FET) are presented for the measurement of ammonia and carbon dioxide during different cultivation processes. Both systems show a linear response between 2.7x10^-4 and 2.7x10^-2moll^-1 for ammonia and 2.2x10^-4 and 1.5x10^-2moll^-1 for dissolved carbon dioxide. A similar system can be used for the determination of enzyme activities. Copyright (C) 1998 Elsevier Science B.V.

Organisation(s)

Institute of Technical Chemistry

Type

Article

Journal

Analytica chimica acta

Volume

373

Pages

253-259

No. of pages

7

ISSN

0003-2670

Publication date

20.10.1998

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Analytical Chemistry, Biochemistry, Environmental Chemistry, Spectroscopy

Electronic version(s)

https://doi.org/10.1016/S0003-2670(98)00424-3 (Access: Unknown)