A modified procedure for the TTC-dehydrogenase test in activated-sludge
1974; Elsevier BV; Volume: 8; Issue: 2 Linguagem: Inglês
10.1016/0043-1354(74)90137-7
ISSN1879-2448
AutoresA. Klapwijk, J. Drent, J.H.A.M. Steenvoorden,
Tópico(s)Electrochemical Analysis and Applications
ResumoThe procedure for the determination of TTC-dehydrogenase activity of activated-sludge has been critically examined in respect of the blank, termination of the enzyme reaction, the extraction of TF, the exclusion of oxygen in the sample, the incubation temperature and the organic substrate used. The dehydrogenase activity measured by a modified TTC-test correlates fairly well with oxygen-uptake. Unfortunately toxic substances such as zinc, phenol, cyanide and 2-4D do not influence the oxygen uptake and dehydrogenase activity to the same extent.
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