Tracers
12 important questions on Tracers
When do you use the EWI and when the EDI method.
What are three positive considerations for using In-Situ sampling?
monitoring
2. Deploy at representative, stabile location
3. Large amount of data generation
What are three positive considerations for using the discrete sampling method?
1. Higher level of detail
2. Detection of high-resolution (e.g. diurnal) patterns
3. Calibration & validation of sensor data necessary
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What does precision say something about and how can it be determined?
What does accuracy say something about and how can it be determined?
It says something about systematic errors. Run reference samples or interlab comparison to determine accuracy.
When are graphical methods used?
For interpretation of small number of samples.
What are four boundary conditions for tracers when doing EMMA?
2. Should be different enough
3. Rule out other sources
4. Source tracer values of all samples are known.
What are four boundary conditions for tracers when doing EMMA?
2. Should be different enough
3. Rule out other sources
4. Source tracer values of all samples are known.
Why do you use a mixing diagram?
What are three examples of preparation when taking samples?
2. Test equipment
3. Pre-label
What is a common way of particulate sampling?
What are four assumptions when doing EMMA?
2. Source tracer 'endmember' values are different enough to distinguish between sources.
3. Source tracer values of all samples are known.
4. There are no additional sources.
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