A Mercury Free Method for the Determination of Chemical Oxygen Demand of the Sample with High Salinity and Organic Macromolecule

De Qiang Chu; Xu Liu; Feng Wei Zhang; Xiang Yun Lei; Lu Lu Xie; Xing Xing Wang; Jian Wu

doi:10.4028/www.scientific.net/AMM.737.477

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 737A Mercury Free Method for the Determination of...

A Mercury Free Method for the Determination of Chemical Oxygen Demand of the Sample with High Salinity and Organic Macromolecule

Abstract:

An improved method for the determination of chemical oxygen demand (COD) is presented. This method is based on the standard method but using silver sulfate as a masking agent for the chloride and using the microwave for the digestion. The method gives tiny errors when the chloride of the samples increases from 606.6 mg/L to more than 30,000 mg/L. The method applies to the samples containing macromolecules and give better results when the sample is prehydrolysed.

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Periodical:

Applied Mechanics and Materials (Volume 737)

Pages:

477-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.737.477

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Online since:

March 2015

Authors:

De Qiang Chu, Xu Liu, Feng Wei Zhang, Xiang Yun Lei, Lu Lu Xie, Xing Xing Wang, Jian Wu*

Keywords:

Chemical Oxygen Demand (COD), High Salinity, Wastewater

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