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Ultrasound-assisted method for determination of chemical oxygen demand
Analytical and Bioanalytical Chemistry, 2002A method for determination chemical oxygen demand (COD) assisted by use of ultrasound has been successfully evaluated for the first time. The method uses instrumentation simpler and cheaper and, in some instances, safer than that used by previous methods for the same purpose. The new device used for sonication is an all-glass cylindrical sonotrode that
Antonio, Canals +1 more
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Stochastic Modeling of Chemical Oxygen Demand Transformations in Gravity Sewers
Water Environment Research, 2005Wastewater quality characteristics in terms of biomass, its substrates, and the corresponding kinetic and stoichiometric parameters were determined based on 109 wastewater samples originating from five different campaigns in four different sewer networks. Quality parameters were determined by model calibration of measured wastewater oxygen uptake rates
Vollertsen, J. +2 more
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Determination of Chemical Oxygen Demand for Saline Wastewater
2010 4th International Conference on Bioinformatics and Biomedical Engineering, 2010The interference of the chloride ion (Cl-) on the standard method for chemical oxygen demand (COD) determination proposed by American Publican Health Association (APHA) cannot be ignored, especially for samples with high salinity. Increasing the ratio of HgSO4:Cl- and adding some masking agents such as AgNO3, Cr3+, Al3+ are all good modifications of ...
Xiangjuan Ma, Yang Gao
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Chapter 1: Chemical Oxygen Demand
2015Organic pollution in water can be monitored by measuring an important index called chemical oxygen demand (COD). In some countries this parameter is a national standard to investigate the organic pollution in water. The conventional method to measure the COD is the determination of excess oxidizing agent such as dichromate or permanganate left in the ...
Latif, Usman, Dickert, Franz
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Journal of the Science of Food and Agriculture, 1983
AbstractClose, largely linear, relationships were found between volatile fatty acids (VFA) determined by gas chromatography, total organic acids (TOA) determined colorimetrically, biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) in the soluble fraction of piggery slurries.
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AbstractClose, largely linear, relationships were found between volatile fatty acids (VFA) determined by gas chromatography, total organic acids (TOA) determined colorimetrically, biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) in the soluble fraction of piggery slurries.
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Chemical oxygen demand and biochemical oxygen demand
2021Sonika Singh +2 more
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Reactive oxygen species signalling in plant stress responses
Nature Reviews Molecular Cell Biology, 2022Ron Mittler +2 more
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Reactive oxygen species (ROS) as pleiotropic physiological signalling agents
Nature Reviews Molecular Cell Biology, 2020Helmut Sies, Dean P Jones
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