| 植物根际强化修复石油污染土壤的研究 | |
| 鲁莽 ; 张忠智 ; 孙珊珊 ; 乔玮 ; 刘晓 ; LU Mang ; ZHANG Zhong-zhi ; SUN Shan-shan ; QIAO Wei ; LIU Xiao | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 生物修复 高羊茅 过氧化氢酶 多环芳烃 bioremediation tall fescue catalase polycyclic aromatic hydrocarbons X53 |
| 其他题名 | Rhizosphere Enhanced Remediation of Petroleum Contaminated Soil |
| 中文摘要 | 采用室内盆栽方式,研究了高羊茅对烃降解的影响,测定了土壤中烃的降解、微生物数量、荧光素二乙酸酯活性、过氧化氢酶活性及脱氢酶活性.结果表明,总石油烃在根际土壤体系比非根际土壤消失得更快.在试验进行10周后,非根际与根际土壤总石油烃降解率分别为11.8%和27.4%.试验过程中挥发的石油烃损失很少.根际土壤微生物平板计数及酶活性显著高于非根际土壤.石油化合物对荧光素二乙酸酯水解具有显著影响.相比无草被体系,种植有高羊茅的体系显著增加了石油烃降解的一级速率常数.因比母体化合物降解缓慢,4种氧化态多环芳烃1-二氢苊酮、9-芴酮、蒽醌、苯并芴酮,在处理过程中浓度不断增加,说明其是在处理过程中形成,并具有持久性.; The effects of growing tall fescue on the biodegradation of hydrocarbons was studied in laboratory scale pots.Degradation of hydrocarbons as well as microbial counts,soil fluorescein diacetate activity,catalase activity and dehydrogenase activity were determined.The results showed that,in the rhizosphere soil system,total petroleum hydrocarbons disappeared faster than that in unvegetated pots soil.After 10 weeks,11.8% and 27.4% of spiked petroleum hydrocarbons disappeared from the bulk and rhizosphere soils respectively.Abiotic loss of petroleum hydrocarbons by evaporation was of minor significance in the test.The microbial plate counts and soil enzyme activities were significantly higher in the rhizosphere than in the bulk soil.Petroleum compounds had significant effect on fluorescein diacetate hydrolyzing activity.Vegetation resulted in significantly greater first-order decay constants compared to the unvegetated control. Oxygenated polycyclic aromatic hydrocarbons that were present in the soil were generally degraded more slowly than the parent compounds,suggesting that they were formed during the treatment or that they are more persistent.Four oxidation products of polycyclic aromatic hydrocarbons,1-acenaphthenone,9-fluorenone,anthraquinone,and benzfluorenone were found at significantly higher concentrations at the end of the study.; 国家自然科学基金项目(40672211) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/65414]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 鲁莽,张忠智,孙珊珊,等. 植物根际强化修复石油污染土壤的研究[J],2010, 2010. |
| APA | 鲁莽.,张忠智.,孙珊珊.,乔玮.,刘晓.,...&LIU Xiao.(2010).植物根际强化修复石油污染土壤的研究.. |
| MLA | 鲁莽,et al."植物根际强化修复石油污染土壤的研究".(2010). |
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