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印度兰契市受污染水体中宽叶香蒲、凤眼莲和水竹叶的植物修复潜力

Phytoremedial Potential of Typha latifolia, Eichornia crassipes and Monochoria hastata found in Contaminated Water Bodies Across Ranchi City (India).

作者信息

Hazra Moushumi, Avishek Kirti, Pathak Gopal

机构信息

a Department of Civil and Environmental Engineering , Birla Institute of Technology , Mesra , Ranchi , India.

出版信息

Int J Phytoremediation. 2015;17(9):835-40. doi: 10.1080/15226514.2014.964847.

Abstract

Phytoremediation is an emerging technology that uses green plants (living machines) for removal of contaminants of concern (COC). These plant species have the potential to remove the COC, thereby restoring the original condition of soil or water environment. The present study focuses on assessing the heavy metals (COC) present in the contaminated water bodies of Ranchi city, Jharkhand, India. Phytoremedial potential of three plant species: Typha latifolia, Eichornia crassipes and Monochoria hastata were assessed in the present study. Heterogenous accumulation of metals was found in the three plant species. It was observed that the ratio of heavy metal concentration was different in different parts, i.e., shoots and roots. Positive results were also obtained for translocation factor of all species with minimum of 0.10 and maximum of 1. It was found experimentally that M. hastata has the maximum BFC for root as 4.32 and shoot as 2.70 (for Manganese). For T. latifolia, BCF of maximum was observed for root (163.5) and respective shoot 86.46 (for Iron), followed by 7.3 and 5.8 for root and shoot (for Manganese) respectively. E. crassipes was found to possess a maximum BCF of 278.6 (for Manganese and 151 (for Iron) and shoot as 142 (for Manganese) and 36.13 (for Iron).

摘要

植物修复是一种新兴技术,它利用绿色植物(活体机器)去除有害污染物。这些植物物种有潜力去除有害污染物,从而恢复土壤或水环境的原始状态。本研究重点评估印度贾坎德邦兰契市受污染水体中存在的重金属(有害污染物)。本研究评估了三种植物物种:宽叶香蒲、凤眼莲和水竹叶的植物修复潜力。在这三种植物物种中发现了金属的异质积累。观察到不同部位(即地上部分和根部)的重金属浓度比例不同。所有物种的转运系数也得到了积极结果,最小值为0.10,最大值为1。通过实验发现,水竹叶根部的最大生物富集系数为4.32,地上部分为2.70(针对锰)。对于宽叶香蒲,根部的最大生物富集系数为163.5,相应地上部分为86.46(针对铁),其次根部和地上部分的生物富集系数分别为7.3和5.8(针对锰)。凤眼莲的最大生物富集系数为278.6(针对锰)和151(针对铁),地上部分为142(针对锰)和36.13(针对铁)。

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