What are the major interferences for COD?

Document ID

Document ID TE242

Published Date

Published Date 05/03/2018
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Question
What are the major interferences for COD?
Summary
Interference in COD analysis
Answer
Chloride is the primary interference when testing for COD.  Each COD vial used with the dichromate method contains mercuric sulfate that will eliminate chloride interference up to the level specified in the procedure.

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