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3 cards from this section. Quick, good the night before a test.
What does µg/m³ measure?
Think about how pollution is expressed in the air.
What unit measures emission rates?
Consider how we measure pollution that is released over time.
What unit is commonly used to express the concentration of air pollutants?
Think about how pollutant concentrations are depicted.
True or False: Emission rates are expressed in grams per cubic meter.
Consider what emission rates focus on.
A manufacturing plant emits pollutants at an emission rate of 120 kg per hour. If they operate 24 hours a day, how many kilograms are emitted in a week?
Don't forget to multiply by the hours they operate in a day and then by 7 for the week.
If the concentration of a particular pollutant in a city is 45 µg/m³ and the air quality standard is 35 µg/m³, by how much does this concentration exceed the standard?
Subtract the acceptable standard from the observed concentration.
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