Liu Rui, Jadeja Rajendrasinh N, Zhou Qixing, Liu Zhe
Environ Eng Sci. 2012 Jun;29(6):494-501. doi: 10.1089/ees.2010.0490.
Pot-culture experiments were carried out to assess the phytoremediation potential of 14 ornamental plants in weathered petroleum-contaminated soil, which was collected in the Shengli Oil Field, one of the biggest oil fields in China, by examining their impact on the degradation potential of total petroleum hydrocarbons (TPHs) and its composition. Results showed Gaillardia aristata, Echinacea purpurea, Fawn (Festuca arundinacea Schreb), Fire Phoenix (a combined F. arundinacea), and Medicago sativa L. could effectively reduce TPHs and its composition in 10,000 mg kg(-1) TPH-contaminated soil. After a 30-day pot-culture experiment, the removal rates were 37.16%, 46.74%, 49.42%, 41.00%, and 37.93%, respectively, significantly higher than that in the control (only 12.93%). Removal rates of TPH composition including saturated hydrocarbon, aromatic hydrocarbon, asphaltene, and polar compound reached 39.41%, 38.47%, 45.11%, 42.92%, and 37.52%, respectively, also higher than that in the control (only 6.90%). Further, the total biomass did not significantly decrease for all plants tested in 10,000 mg kg(-1) TPH-contaminated soil. Fourier transform infrared spectroscopy confirmed the presence of oil in the plant tissues. These results suggested that the typical ornamental species including G. aristata, E. purpurea, Fawn, Fire Phoenix, and M. sativa can be adopted in phytoremediation of oil-contaminated soil.
进行了盆栽试验，通过检测14种观赏植物对风化石油污染土壤中总石油烃（TPHs）降解潜力及其组成的影响，评估其在采自中国最大油田之一的胜利油田的污染土壤中的植物修复潜力。结果表明，天人菊、紫锥菊、小鹿（高羊茅）、火凤凰（高羊茅组合）和紫花苜蓿能够有效降低TPHs及其在10000 mg kg(-1) TPH污染土壤中的组成。经过30天的盆栽试验，去除率分别为37.16%、46.74%、49.42%、41.00%和37.93%，显著高于对照组（仅12.93%）。TPH组成（包括饱和烃、芳烃、沥青质和极性化合物）的去除率分别达到39.41%、38.47%、45.11%、42.92%和37.52%，也高于对照组（仅6.90%）。此外，在10000 mg kg(-1) TPH污染土壤中测试的所有植物的总生物量均未显著下降。傅里叶变换红外光谱证实植物组织中存在石油。这些结果表明，天人菊、紫锥菊、小鹿、火凤凰和紫花苜蓿等典型观赏植物可用于石油污染土壤的植物修复。
