METHOD OF DETERMINING CHEMICAL OXYGEN DEMAND (COD) FOR HIGH CHLORIDE SAMPLES

METHOD OF DETERMINING CHEMICAL OXYGEN DEMAND (COD) FOR HIGH CHLORIDE SAMPLES

The present invention provides a method of determining chemical oxygen demand (COD) for a sample with a high concentration of chloride. The method includes obtaining the sample, determining a concentration of chloride in the sample to obtain a known concentration of chloride in the sample, dosing an...

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Hauptverfasser: GUTHMANN, Helga, HUENIG, Isabel, SCHULZ, Carsten, KLOOS, Ralf
Format: Patent
Sprache:eng ; fre ; ger
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator GUTHMANN, Helga
HUENIG, Isabel
SCHULZ, Carsten
KLOOS, Ralf
description The present invention provides a method of determining chemical oxygen demand (COD) for a sample with a high concentration of chloride. The method includes obtaining the sample, determining a concentration of chloride in the sample to obtain a known concentration of chloride in the sample, dosing an amount of the sample, an acid and an oxidizing agent into a container to obtain an analyte, heating the container containing the analyte, photometrically determining a preliminary chemical oxygen demand (COD) of the analyte in an analytic device, and correcting for the high concentration of chloride using a chloride correction to obtain the chemical oxygen demand (COD).
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title METHOD OF DETERMINING CHEMICAL OXYGEN DEMAND (COD) FOR HIGH CHLORIDE SAMPLES
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