Practice Sample Collection And Storage Design (4.1) - Analyte Losses in Chemical Analysis

Practice: Sample Collection and Storage Design

Lesson 4.1Analyte Losses in Chemical Analysis

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11 questions

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6 sample questions

Question 1.
What are the three main mechanisms of analyte loss?
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Think of the acronym V.R.A to remember them.
Question 2.
Why are glass containers preferred for organic samples?
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Consider the material properties of glass versus plastic.
3Question 3.
What is volatilization in the context of sample collection?
- A process of chemical reaction
- A method of sample analysis
- The evaporation of analytes from a sample
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Think about what happens to water when it's left out.
4Question 4.
True or False: Adsorption can only occur with organic compounds.
- True
- False
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Consider the properties of different materials.
Question 5.
A field scientist collects water samples from a river, but upon analysis, she finds significant discrepancies between the expected and actual analyte concentrations. Discuss potential reasons for these discrepancies and propose solutions.
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Consider what could have happened from collection to analysis.
Question 6.
Propose a quality control plan for a laboratory analyzing organics in water samples. Include specific methods and procedures to minimize analyte loss.
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Think about all the stages from collection to analysis.

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