A Study of the Uptake of Heavy Metals by Plants near Metal-Scrap Dumpsite in Zaria, Nigeria

Journal of Chemical Technology & Biotechnology Pub Date : 2014-08-12 DOI:10.1155/2014/394650

Z. Yashim, Omoniyi K. Israel, M. Hannatu

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引用次数: 28

Abstract

The research work investigates the metal uptake of the plants Lycopersicon esculentum (tomato), Rumex acetosa (sorrel), and Solanum melongena (garden egg) collected from experimental sites and a control area in Zaria, Nigeria. The concentrations of Cd, Cu, Fe, Pb, Mn, and Zn in different parts of each of the plant species grown on the experimental and control soils were determined using atomic absorption spectrophotometry. The experimental levels of the metals were higher than those at the control site and the limits recommended by Food and Agricultural Organisation/World Health Organisation (FAO/WHO). Solanum melongena showed bioaccumulation factor (BF) and transfer factor (TF) greater than 1 for Cd, Pb, and Mn; Rumex acetosa showed BF and TF greater than 1 for Mn and Zn, and TF was greater than 1 for Cu and Fe; Lycopersicon esculentum had only the TF for Fe, Pb, Mn, and Zn greater than 1. This results implies that Solanum melongena and Rumex acetosa plants can be effectively used for phytoremediation of Cd, Pb, Mn, and Zn from the dumpsite. Pearson’s correlation coefficient values were greater than 0.75 for all the metals studied which indicated that the high metal level in the experimental soil was a result of the metal-scrap.

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尼日利亚Zaria废金属垃圾场附近植物对重金属吸收的研究

研究工作调查了从尼日利亚Zaria的试验点和对照区采集的番茄(Lycopersicon esculentum)、酢汁草(Rumex acetosa)和花园蛋(Solanum melongena)植物的金属吸收量。采用原子吸收分光光度法测定了试验土壤和对照土壤上不同植物不同部位Cd、Cu、Fe、Pb、Mn和Zn的含量。实验中重金属含量高于控制地点的水平，也高于联合国粮农组织/世界卫生组织(FAO/WHO)建议的限量。茄茄对Cd、Pb、Mn的生物积累因子(BF)和传递因子(TF)均大于1;对锰、锌的BF和TF均大于1，对铜、铁的TF均大于1;番茄对Fe、Pb、Mn和Zn的TF值均大于1。研究结果表明，龙葵和龙葵可以有效地修复垃圾场中镉、铅、锰和锌的污染。所有金属的Pearson相关系数值均大于0.75，表明试验土壤中金属含量高是金属废料造成的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Chemical Technology & Biotechnology

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