Chemical oxygen demand (COD) is a critical analytical parameter for water quality
assessment. COD represents the degree of organic pollution in water bodies. However, the …

Water contamination is a globally important environmental concern, with chemical oxygen
demand (COD) being a criteria in water quality assessment, providing information on the …

Colloidal ZnO nanoparticles were synthesized by the sol− gel method and were
characterized by UV− visible spectroscopy and photoluminescence spectroscopy. The effect …

The development of a highly sensitive, reusable, and microportable sensor for determining
the chemical oxygen demand (COD) is very important for performing in situ measurements …

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This paper describes an online water quality monitoring and management system that was
developed by combining a chemical oxygen demand sensor with an artificial neural network …

An electrochemical detection system with an F-PbO2 modified electrode for flow injection
analysis to determine chemical oxygen demand (COD) was proposed and experimentally …

Permanganate index (COD Mn) is one of the important indicators of surface water quality
measurement. Herein, a portable analytical system was developed for on-site and rapid …

Improving the performance of optical oxygen sensors can be accomplished by adding metal
oxide semiconductors (MOSs) additives to the composition comprising an oxygen-sensing …

Hydrothermal pretreatment (HTP) has received huge progress in converting biomass waste
into available products at a large scale, but challenges in massive water input and …