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Abstract

The objective of this project is to reduce the amount of PM 2.5 around the

inner circle of Roong aroon school.

The preparation process is searching which kind of plants that are good to

reduce the amount of PM 2.5. We have decided to choose Zanzibar gem, Aloe

vera, Spotted betel and Dragon tongue. Then we have also decided to choose

the area to plants our trees which is inner circle of Roong aroon school.

We have gathered the data of PM 2.5 by measuring that area before and

after putting the trees over there every 4 pm.

The result of study, we have found the trees that we chose can reduce the
PM 2.5. From the experiment the Dragon tongue can reduce 14 µg/m³, Zanzibar

gem can reduce 14 µg/m³, Aloe vera can reduce 14 µg/m³ and Spotted betel can

reduce 9 µg/m³.