Plant Ecology and Environmental Science Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India.
Department of Civil Engineering, Institute of Engineering and Technology, Dr. A.P.J. Abdul Kalam Technical University, Lucknow, Uttar Pradesh, India.
Environ Geochem Health. 2020 Dec;42(12):4101-4111. doi: 10.1007/s10653-020-00529-y. Epub 2020 Feb 14.
The presence of heavy metal in soil and water resources has serious impact on human health. The study was designed to examine the phytoremediation ability of plant species that are growing naturally on the Zn-contaminated site. For the study, six plant species and their rhizospheric soil as well as non-rhizospheric soil samples were collected from different parts of the industrial sites for chemical and biological characterization. Visual observations and highest importance value index (IVI) through biodiversity study revealed potential plants as effective ecological tools for the restoration of the contaminated site. Among the plants, almost all were the most efficient in accumulating Fe, Mn, Cu and Zn in its shoots and roots, while Cynodon dactylon, Chloris virgata and Desmostachya bipinnata were found to be stabilizing Cr, Pb and Cd (bioconcentration factor in root = 7.95, 6.28 and 1.98 as well as translocation factor = 0.48, 0.46 and 0.78), respectively. Thus, the results of this study showed that the naturally growing plant species have phytoremediation potential to remediate the electroplating wastewater-contaminated site. These plant species are successful phytoremediators with their efficient metal stabilizing and well-evolved tolerance to heavy metal toxicity.
土壤和水资源中重金属的存在对人类健康有严重影响。本研究旨在研究在 Zn 污染场地自然生长的植物物种的植物修复能力。为此，从工业场地的不同部位采集了 6 种植物及其根际土壤和非根际土壤样品，进行了化学和生物学特性分析。通过生物多样性研究的直观观察和最高重要值指数（IVI）揭示了潜在的植物作为受污染场地修复的有效生态工具。在这些植物中，几乎所有植物在其地上部分和根部都对 Fe、Mn、Cu 和 Zn 的积累最为有效，而狗牙根、假俭草和双穗雀稗则被发现能够稳定 Cr、Pb 和 Cd（根部的生物浓缩系数分别为 7.95、6.28 和 1.98，以及迁移系数分别为 0.48、0.46 和 0.78）。因此，本研究结果表明，自然生长的植物物种具有植物修复潜力，可以修复电镀废水污染的场地。这些植物物种是成功的植物修复剂，它们具有有效的金属稳定能力和对重金属毒性的良好进化耐受性。
