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3 cards from this section. Quick, good the night before a test.
What is concentration?
Think about what we measure in environmental samples.
How do we define flux?
This relates to how substances move across boundaries.
What is the primary method for measuring concentration in soil?
Think about how samples are physically taken from the ground.
True or False: The flux of a contaminant is independent of moisture content.
Recall the impact of wet versus dry soil conditions.
An agricultural field shows contaminants fluxing into the air. If the soil moisture increases from 5% to 20%, how would you expect the driving force and flux to change? Discuss your reasoning.
Consider how moisture content impacts both diffusion and concentration.
Calculate the expected concentration of a pollutant if, during a 10-hour monitoring period, the input flux is 100 units, and the output flux is 60 units. What is the net change?
Use the mass balance equation to derive the result.
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