a Department of Environmental Sciences , University of South Africa , Pretoria , South Africa.
b Institute for Science and Technology Education, University of South Africa , Pretoria , South Africa.
Int J Phytoremediation. 2018 Mar 21;20(4):352-361. doi: 10.1080/15226514.2017.1393386.
The paucity of information in the literature on the characteristics of plants that could be used for phytoremediation of petroleum hydrocarbons (PHC)-contaminated sites was the principal reason for this study. The aim of the study was to identify indigenous plants growing in PHC-impacted soil in Umuahia in eastern-Nigeria that have the ability to phytoremediate soils contaminated with hydrocarbons under tropical monsoon climate conditions. A total of 28 native plant species from different families growing in and around hydrocarbon-impacted soil in the vicinity of vandalized pipelines carrying petroleum products were collected and studied for their ability to grow in a hydrocarbon-impacted soil and remove the PHC from the impacted soil. Some of the plants demonstrated the ability to grow in soil with high levels of the total petroleum hydrocarbons (TPH), which shows that they may be tolerant to hydrocarbons in soil and could potentially phytoremediate a hydrocarbon-contaminated soil. Chromolaena odorata, Aspilia africana, Chloris barbata, Pasparlum vaginatum, Bryophyllum pinnatum, Paspalum scrobiculatum, Cosmos bipinnatus, Eragrostis atrovirens, Cyperus rotundus, and Uvaria chamae showed tendencies to phytoremediate contaminated soil. By using bioaccumulation coefficient (BAC) as a measure of phytoremediation, results showed that C. odorata, A. africana, and U. chamae demonstrated the highest potentials to phytodegrade hydrocarbons in soil.
本研究的主要原因是文献中关于可用于修复受石油烃（PHC）污染场地的植物特征的信息很少。本研究的目的是确定在尼日利亚东部乌穆阿希亚受 PHC 影响的土壤中生长的本地植物，这些植物具有在热带季风气候条件下修复受碳氢化合物污染的土壤的能力。从附近遭受破坏的输送石油产品的管道周围受碳氢化合物影响的土壤中生长的不同科的 28 种本地植物被收集并研究其在受碳氢化合物影响的土壤中生长和从受影响的土壤中去除 PHC 的能力。一些植物表现出在高总石油烃（TPH）水平的土壤中生长的能力，这表明它们可能对土壤中的碳氢化合物具有耐受性，并可能潜在地修复受碳氢化合物污染的土壤。臭菊、非洲紫菀、斑茅、羽裂蔓绿绒、落地生根、狗牙根、孔雀草、狗尾草、香附、荸荠和小果野牡丹表现出修复受污染土壤的趋势。通过使用生物积累系数（BAC）作为修复的衡量标准，结果表明，臭菊、非洲紫菀和小果野牡丹在土壤中表现出最高的降解碳氢化合物的潜力。
