Sensing of chemical oxygen demand (COD) by amperometric detection-dependence of current signal on concentration and type of organic species.

ABSTRACT: The standard method to determine chemical oxygen demand (COD) with K₂Cr₂O₆ uses harmful chemicals, has a long analysis time, and cannot be used for on-site online monitoring. It is therefore necessary to find a fast, cheap, and harmless alternative. The amperometric determination of COD on boron-doped diamond (BDD) electrodes is a promising approach. However, to be a suitable alternative, the electrochemical method must at least be able to determine the COD of water samples independently of the contained substances. Therefore, the current signal as a function of various organic materials was investigated for the first time. It was shown that the height of the signal current depended on the type of organic matter in single-substance solutions and that this s

SUBMITTER: Lambertz S 

PROVIDER: S-EPMC10154276 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature