4.1 - Analysis of Chemicals across Different Matrices
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Practice Questions
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What does BOD stand for?
💡 Hint: Think about how much oxygen is required by microorganisms in the water.
What is TOC used to measure?
💡 Hint: Consider what makes water organic.
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Interactive Quizzes
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What does COD measure?
💡 Hint: Think about oxidation.
True or False: Bioassays can provide a cumulative measure of toxicity.
💡 Hint: Recall how organisms respond to combined pollutants.
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Challenge Problems
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You are tasked with assessing the toxicity of a river adversely affected by industrial runoff containing multiple pollutants. Outline a study plan using bioassays.
💡 Hint: Think about control groups and different concentrations.
In a new study, a researcher decides to analyze a chemical using both standard and non-standard methods. Discuss potential outcomes of this decision.
💡 Hint: Consider why standards exist in the first place.
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