Practice Sample Handling And Storage Techniques (5.3) - Quality Control/Quality Assurance

Practice: Sample Handling and Storage Techniques

Lesson 5.3Quality Control/Quality Assurance

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9 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
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does QA stand for in environmental analysis?
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It's about systematic processes!
Question 2.
Name one technique used in sample processing.
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Think about removing unnecessary solids.
3Question 3.
What is the main function of Quality Control (QC)?
- To ensure data accuracy
- To evaluate quality standards
- To reduce costs
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Think about what QC aims to achieve.
4Question 4.
True or False: Precision is about how close a measurement is to the true value.
- True
- False
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Recall the definitions of precision and accuracy.
Question 5.
A student collects a water sample from a lake for benzene analysis. They transport it without considering temperature control. Discuss how failing to control temperature could impact their results.
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Consider chemical properties of benzene.
Question 6.
Describe a scenario where matrix interference might alter the results of a chemical analysis in environmental studies. How can these interferences be mitigated?
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Consider the role of processing and sample preparation.

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