Practice Analysis Of Chemicals Across Different Matrices (4.1) - Analysis Methods – Review of Standard Methods

Practice: Analysis of Chemicals across Different Matrices

Lesson 4.1Analysis Methods – Review of Standard Methods

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8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does BOD stand for?
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Think about how much oxygen is required by microorganisms in the water.
Question 2.
What is TOC used to measure?
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Consider what makes water organic.
3Question 3.
What does COD measure?
- Organic pollutants
- Total nitrogen
- Oxygen demand for organic substances
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Think about oxidation.
4Question 4.
True or False: Bioassays can provide a cumulative measure of toxicity.
- True
- False
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Recall how organisms respond to combined pollutants.
Question 5.
You are tasked with assessing the toxicity of a river adversely affected by industrial runoff containing multiple pollutants. Outline a study plan using bioassays.
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Think about control groups and different concentrations.
Question 6.
In a new study, a researcher decides to analyze a chemical using both standard and non-standard methods. Discuss potential outcomes of this decision.
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Consider why standards exist in the first place.

4 more questions in this section. Enroll free to practise them all.