| Three indoor potted ornamental plants Chlorophytum Phnom Penh, Ivy, Scindapsus aureus were tested and evaluated with their capability of purifying benzene in different fumigation times, through being putted into an airtight chamber with benzene gas, also controlled the temperature, humidity and illumination intensity. The results showed that all tested potted-plants could absorb indoor
benzene, with a significant variance in different fumigation times. According to benzene absorption rate per unit leaf area: Ivy >Chlorophytum Phnom Penh > Scindapsus aureus, but according to the resistance under benzene stress: Ivy > Scindapsus aureus >Chlorophytum Phnom Penh. Besides, changes with total chlorophyll of the three potted-plants under benzene fumigation were quite different, but the decomposition of chlorophyll a was always slower than that of chlorophyll b. Samples from 48-hour of fumigation suggested that leaf dry matter contents of the three potted-plants were increased slightly, but at 72-hour of fumigation, the leaf dry matter contents of Ivy and Scindapsus aureus were decreased, which due to their photosynthesis were inhibited and respirations increased
simultaneously. |
