Practice Measurement Of Total Suspended Solids (tss) (7) - Introduction - part B

Practice: Measurement of Total Suspended Solids (TSS)

Lesson 7Introduction - part B

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9 questions

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6 sample questions

Question 1.
What is a surrogate in environmental analysis?
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Think about how we measure similar substances.
Question 2.
Why is hexane used in the extraction of TSS?
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Consider properties of hexane relative to water.
3Question 3.
What is the purpose of using a surrogate in TSS measurement?
- To increase the sample volume
- To estimate recovery efficiency
- To reduce extraction time
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Think about the role of surrogates.
4Question 4.
True or False: Hexane is used because it mixes well with water.
- True
- False
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Consider the properties of hexane in comparison to water.
Question 5.
A laboratory uses a balance with a minimum detection limit of 0.1 mg. Calculate the minimum sample volume required for a TSS concentration of 10 mg/L.
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Always use the relationship between mass and volume for calculations.
Question 6.
A researcher finds that after extraction, they recover only 50% of the surrogate added (100 ng). How much TSS can they estimate was present initially if the ratio remains constant?
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Think about the relationship in recovery rates.

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