耐阴观叶植物对室内甲醛敏感监测能力研究

甲醛是室内"三大隐形杀手"之一,并已成为室内头号化学污染物。如何安全、有效、持久的监测室内甲醛污染,已经成为亟待解决的重大课题。植物监测作为1种简洁、经济、准确、持续高效、环境友好型的方法,已逐渐成为室内甲醛污染监测的重要技术手段。研究运用密闭熏气法对8种室内耐阴观叶植物进行不同浓度的甲醛胁迫试验,对其甲醛污染监测能力的强弱进行综合评价。结果表明:在2、4和8 mg/m3甲醛浓度胁迫下,甲醛浓度与植物种类两因素之间及其协同作用,对植物叶绿素、丙二醛(MDA)、过氧化物酶(POD)变化的影响均能达到极显著水平;就两因素相比较而言,甲醛浓度对植物叶绿素、MDA、POD变化的影响更显著;综合不同甲醛浓度下8种植物的叶绿素、MDA、POD变化,对室内甲醛污染监测能力较强的植物有:玻璃海棠(X2)、凤仙花(X1);监测能力中等的植物有:吸毒草(X7)、天竺葵(X3)、薄荷(X4)、吊竹梅(X8);监测能力较弱的植物有:吊兰(X5)、绿萝(X6)。

Research on sensitive monitoring capability of shade tolerant foliage-plant to indoor formaldehyde pollution

Formaldehyde which has been the top indoor chemical pollutant is one of the three indoor＂invisible killers＂. How to monitor indoor formaldehyde pollution safely,efficiently and constantly has been an urgent issue. As a simple,economical,accurate,sustainable,efficient and environmentfriendly method,plant monitoring has become an important technological means to monitor indoor formaldehyde pollution. Airtight fumigation method is used to do stressful experiment with different concentrations of formaldehyde treating eight kinds of indoor shade tolerant foliage-plants. The results show that under the stress of 2 mg / m3,4 mg /m3 and 8mg / m3 concentration of formaldehyde,the influences of plants,concentration and their synergistic effect on the change of chlorophyll content,MDA and POD all reach extremely significant level and the influence of concentration is comparatively more significant. From the change of chlorophyll content,MDA and POD,the plants with high monitoring capability include Begonia semperflorens（ X2）,Impatiens balsamina（ X1）; the plants with moderate monitoring capability include Melissa officinalis（ X7）,Pelargonium hortorum（ X3）,Menthahaplocalyx（ X4）, Zebrina pendula（ X8）; the plant with low monitoring capability include Chlorophytum comosum（ X5）,Scindapsus aureum（ X6）.