A volcanic eruption has driven PM10 levels in the surrounding area up, but 9 days after the eruption concentrations have come down to 219 µg m-3. If the PM10 lifetime due to all loss processes was 2.3 days, what was the initial peak concentration? Round to the nearest whole number.

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09-06-2024
Geography

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A volcanic eruption has driven PM10 levels in the surrounding area up, but 9 days after the eruption concentrations have come down to 219 µg m-3. If the PM10 lifetime due to all loss processes was 2.3 days, what was the initial peak concentration? Round to the nearest whole number.

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