Two particulate pollutant
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Particulate matter is the sum of all solid and liquid particles suspended in air, many of which are hazardous. This complex mixture contains for instance dust, pollen, soot, smoke, and liquid droplets.
On average, the two main components of particulate matter in Europe are sulphate and organic matter. This is true both for fine particles (PM2.5) and for coarseand fine particles combined (PM10).
However, near roads mineral dust is also a main component of PM10.
On days when the levels of particulate matter in the air are high (PM10 exceeds 50 µg/m3), nitrate is also a major component of both PM10 and PM2.5.
Soot, also referred to as black carbon, makes up 5 to10% of fine particles and somewhat less of coarse particles; near certain roads the proportion of soot can reach 15 to 20%.
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Answer:
Explanation:
Here's your answer,
Particulate matter is the sum of all solid and liquid particles suspended in air, many of which are hazardous. This complex mixture contains for instance dust, pollen, soot, smoke, and liquid droplets.
On average, the two main components of particulate matter in Europe are sulphate and organic matter. This is true both for fine particles (PM2.5) and for coarseand fine particles combined (PM10).
However, near roads mineral dust is also a main component of PM10.
On days when the levels of particulate matter in the air are high (PM10 exceeds 50 µg/m3), nitrate is also a major component of both PM10 and PM2.5.
Soot, also referred to as black carbon, makes up 5 to10% of fine particles and somewhat less of coarse particles; near certain roads the proportion of soot can reach 15 to 20%.