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2006•Environmental Monitoring in ChinaRequires access

The Technology of Measuring Low COD in High Chloride Water Samples

Junxia Wang

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Abstract

It uses the method that only dichromate and dense sulfuric acid,heating 0.5 hour,cooling 5 minutes and then joins 0.3g silver sulfate,goes on heating 1.5 hour,to measure the total apparent COD,rectified by the apparent COD of chloride to measure COD,to measure the low COD in high chloride water samples.This method can accurate to response the COD of water sample with high duplicate,it has no pollution and low costs,so it is a cleaning analysis and worth to be popularized.

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What this paper is about

It uses the method that only dichromate and dense sulfuric acid,heating 0.5 hour,cooling 5 minutes and then joins 0.3g silver sulfate,goes on heating 1.5 hour,to measure the total apparent COD,rectified by the apparent COD of chloride to measure COD,to measure the low COD in high chloride water samples.This method can accurate to response the COD of water sample with high duplicate,it has no pollution and low costs,so it is a cleaning analysis and worth to be popularized.

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Available abstract

It uses the method that only dichromate and dense sulfuric acid,heating 0.5 hour,cooling 5 minutes and then joins 0.3g silver sulfate,goes on heating 1.5 hour,to measure the total apparent COD,rectified by the apparent COD of chloride to measure COD,to measure the low COD in high chloride water samples.This method can accurate to response the COD of water sample with high duplicate,it has no pollution and low costs,so it is a cleaning analysis and worth to be popularized.

Key concepts: Chloride, Sulfuric acid, Chemistry, Sulfate, Measure (data warehouse), Pulp and paper industry, Environmental science, Inorganic chemistry

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