Practice - Chemical Oxygen Demand (COD)
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Practice Questions
Test your understanding with targeted questions
What does COD stand for?
💡 Hint: Think about what we measure concerning oxygen and water.
Is COD dependent on biological processes?
💡 Hint: Consider the method used in COD testing.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does COD measure?
💡 Hint: Remember what type of materials are oxidized.
True or False: COD results can be affected by other chemicals in the water.
💡 Hint: Consider the interactions in the test environment.
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Challenge Problems
Push your limits with advanced challenges
A wastewater sample shows a COD of 200 mg/L. Upon testing, you find that there are significant levels of sulfides present in the sample. How would you interpret the COD result, and what steps would you recommend to ensure reliability in your assessment?
💡 Hint: Consider the nature of interfering substances and how they could distort your findings.
Discuss how the methodology for measuring COD could be adapted to improve accuracy in cases where interferences are suspected. Consider additional testing regimens or alternative methods.
💡 Hint: Think outside the box about how to handle multiple variables influencing COD results.
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Reference links
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