Question
3. (5%) (a) Write the definitions of BOD, COD, and NOD. (b) Write the reaction that...
3. (5%) (a) Write the definitions of BOD, COD, and NOD. (b) Write the reaction that you expect in COD test tubes. Explain how we estimate the amount of organics in the COD test. (c) What happens if Cl' is present in COD tests? Write the chemical reaction and describe how Cl' affects the COD measurement. (d) Explain why mercury is added in COD test tubes. In your explanation, write the expected chemical reaction with added mercury.
Answers
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