RT Unpublished Material
T1 Fast Electrochemical COD (eCOD) Measurement on Polluted Water
A1 Martín Gómez, Andrés N.
A1 Mozo Mulero, Cristina
A1 Mozo Llamazares, Juan Daniel
K1 Wastewater
K1 COD
K1 Amperometry
K1 Flow detector
K1 Electrochemistry
K1 Electroanalysis
AB COD is one of the main parameters for assessment of water quality. There are many procedures to determine COD but most of them are time expensive because a digestion step is included to complete the oxidation of organic matter by chemical reactants. The proposed method uses the same technology as for preparative electrochemical oxidation of pollutants but here with an analytical purpose. A flow-cell with laminar path is designed to circulate the water and it was tested with standard solutions in a continuous amperometric technique. A single analysis takes only 4 minutes and no reactants are consumed, only electrical energy. The range of electrochemical-COD (eCOD) that can be detected goes from 0.1 to 1200 ppm, and a LOD of 0.03 ppm and an RSD% below 0.3 are calculated. Similar results were found by checking for different organic pollutants. These results are compared with those obtained by using the dichromate standard method (COD-Cr) and no significative differences are observed.
SN 0039-9140
YR 2025
FD 2025-07-16
LK https://hdl.handle.net/10272/27013
UL https://hdl.handle.net/10272/27013
LA eng
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026