실내 분화식물의 지피 식물 및 물질에 따른 포름알데히드 제거 효율

Efficiency of Formaldehyde Removal According to the Ground Cover Plants and Materials of Indoor Potted Plants

The efficiency of formaldehyde removal by the ground cover materials of potted plants was assessed in Dieffenbachia amoena, Ficus benjamina, and Chrysalidocarpus lutescens. These potted plants were covered with fine gravel, sand, unplanted sphagnum moss, and planted Selaginella tamariscina. The removal capacity of potted plants covered with materials was determined by formaldehyde (2 μLㆍL⁻¹) in airtight chambers (1.0 m³) constructed of inert materials. The rate of formaldehyde removal by potted plants covered with S. tamariscina was the greatest and whereas, it’s removal by sand was the smallest. The rate of formaldehyde removal by potted plants with S. tamariscina increased about 26% as compared that with sand 2 h after gas exposure. In tested species, the amount of formaldehyde removal by potted D. amoena was the greatest plants irrespective of the ground cover materials of potted plants and followed by F. benjamina, and C. lutescens. To compare the removal efficiency between ground cover materials of potted plants, the time interval required to reach 50% of the initial concentration (T₅₀%) was determined; fine gravel, sand, sphagnum moss, and planted S. tamariscina accounted for 88, 118, 81, and 53 min respectively. These results might be due to being different in contact with indoor air pollutants on ground of potted plants. Formaldehyde removal by potted plants was relevant to rhizosphere microorganisms. As a result, the efficiency of formaldehyde removal by potted plants covered with S. tamariscina was the greatest.