A STUDY ON REDUCTION EFFECT OF INDOOR AIR POLLUTANTS IN SPRING BY PLANTS

This study explored the reduction effect of indoor pollutants by the kinds of plant. The effect of reducingthe concentration of air contaminants by three species of plants was studied in a full-scale mock-upmodel. Aglaonema brevispathum, Pachira aquatica and Ficus benjamiana were used. Their positionsand amount were controlled. Field measurements were performed in models where the plants wereplaced and were not. The dimensions of the two models were equal. The concentration of Benzene,Toluene, Ethylbenzene, Formaldehyde were monitored, since they were known as most toxic materials.The concentration of VOCs was monitored three hours after the plants were placed and three daysafter the plants were placed.As a consequence, the reduction effect of pollutants was indicated as being great at the room withplants. At experiment by grown plant volume, the more the plant grown volume was, the greater theconcentration reduction effect was, and at experiment in grown plant arrangement, the effect was thegreatest when they were placed at the place close to the window. Of them when Ficus benjamiana wasplanted, Toluene was reduced by 45.45 ?/?, where the effect was the best, and Formaldehyde wasreduced by 375.42 ?/?. Among lost pollutants, the effect of Ficus benjamiana and Aglaonema wasvery good. The effect of Pachira worked, but its reduction effect was the least, which were the mostdifficult to manage.