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首页> 外文期刊>Water, Air, and Soil Pollution >REMOVAL OF BENZENE BY THE INDOOR PLANT/SUBSTRATE MICROCOSM AND IMPLICATIONS FOR AIR QUALITY
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REMOVAL OF BENZENE BY THE INDOOR PLANT/SUBSTRATE MICROCOSM AND IMPLICATIONS FOR AIR QUALITY

机译：室内植物/基质微团对苯的去除及其对空气质量的影响

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The quality of the indoor environment has become a major health consideration, since urban-dwellers spend 80-90% of their time indoors, where air pollution can be several times higher than outdoors. 'Indoor' potted-plants can remove air-borne contaminants such as volatile organic compounds (VOCs), over 300 of which have been identified in indoor air. In this study a comparison was made of rates of removal of benzene, as model VOC, by seven potted-plant species/varieties. In static test-chambers, high air-borne doses of benzene were removed within 24 h, once the response had been stimulated ('induced') by an initial dose. Removal rates per pot ranged from 12-27 ppm d~(-1) (40 to 88 mg m~(-3) d~(-1)) (2.5 to 5 times the Australian maximum allowable occupational level). Rates were maintained in light or dark, and rose about linearly with increased dose. Rate comparisons were also made on other plant parameters. Micro-organisms of the potting mix rhizosphere were shown to be the main agents of removal. These studies are the first demonstration of soil microbial VOC degradation from the gaseous phase. With some species the plant also made a measurable contribution to removal rates. The results are consistent with known, mutually supportive plant/soil-micro-organism interactions, and developments in microbially-based 'biofilter reactors' for cleaning VOC-contaminated air. The findings demonstrate the capacity of the potted-plant microcosm to contribute to cleaner indoor air, and lay the foundation for the development of the plant/substrate system as a complementary biofiltration system.
机译：室内环境的质量已成为主要的健康考虑因素，因为城市居民将80％至90％的时间都花在室内，那里的空气污染可能是室外的几倍。 “室内”盆栽植物可以清除空气中的污染物，例如挥发性有机化合物（VOC），其中300多种已在室内空气中被发现。在这项研究中，比较了7种盆栽植物品种/品种对苯的去除率（作为VOC模型）。在静态测试室中，一旦反应被初始剂量刺激（“诱导”），便在24小时内去除了高空气传播剂量的苯。每个锅的去除率范围为12-27 ppm d〜（-1）（40至88 mg m〜（-3）d〜（-1））（澳大利亚最大允许职业水平的2.5至5倍）。速率维持在亮或暗状态，并随着剂量增加线性增加。还对其他工厂参数进行了速率比较。盆栽混合物根际中的微生物被证明是去除的主要媒介。这些研究是从土壤中气相降解土壤微生物VOC的第一个证明。对于某些物种，该植物还对去除率做出了可观的贡献。该结果与已知的，相互支持的植物/土壤-微生物相互作用以及基于微生物的“生物过滤器反应器”用于净化受VOC污染的空气的发展相一致。这些发现证明了盆栽植物微观世界有助于清洁室内空气的能力，并为发展植物/基质系统作为互补的生物过滤系统奠定了基础。

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