Trace Metal Deposition on Soil and Accumulation in Plants around a Coal Power Station in Pretoria, South Africa

IF 0.4 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Journal of Environmental Science and Management Pub Date : 2019-09-25 DOI:10.47125/jesam/2018_2/04

Mandla Xaba, J. Olowoyo, G. Scott

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引用次数: 1

Abstract

Combustion of coal in power stations is one of the main sources of environmental pollution due to the generation of trace metals. This study investigated levels of trace metals from five different plants and soils around a coal-fired power station in Tshwane, South Africa. Plants and soil samples were collected from different points (10, 500 and 750 m) along different directions (North West, North East, South West and South East) and analyzed for metals contents using Inductive Couple Plasma–Optical Emission Spectrophotometer (ICP-OES). A significant increase in the concentration of trace metals was detected from the stack pointing to the effect of the long stack in depositing more trace metals at a distance of 750 m away from the power station. Digitaria diagonalis and Tagetes minuta have significantly higher concentrations of trace metals than other plants collected around the area (p < 0.05). The soil pH was in the range 5.13 ± 0.11 to 6.01 ± 0.12. The concentrations for all elements in soil were recorded in the following descending order: Fe > Al > Mg > Cr > Zn > Cu > Pb >Ni > Co.

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南非比勒陀利亚一座燃煤发电站周围土壤中微量金属的沉积和植物的积累

发电站燃煤是由于产生微量金属而造成环境污染的主要来源之一。这项研究调查了南非茨瓦内一座燃煤发电站周围五种不同植物和土壤中的微量金属含量。从不同方向（西北、东北、西南和东南）的不同点（10、500和750米）采集植物和土壤样本，并使用电感耦合等离子体-光学发射分光光度计（ICP-OES）分析金属含量。从烟囱中检测到痕量金属浓度的显著增加，这表明长烟囱在距离发电站750米的地方沉积更多痕量金属的效果。与该地区采集的其他植物相比，对角金花莲和小Tagetes minuta的微量金属浓度明显较高（p<0.05）。土壤pH值在5.13±0.11至6.01±0.12之间。土壤中所有元素的浓度按以下递减顺序记录：Fe>Al>Mg>Cr>Zn>Cu>Pb>Ni>Co。

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来源期刊

Journal of Environmental Science and Management ENVIRONMENTAL SCIENCES-

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

2 months

期刊介绍： The Journal of Environmental Science and Management (JESAM) is an international scientific journal produced semi-annually by the University of the Philippines Los Baños (UPLB). JESAM gives particular premium to manuscript submissions that employ integrated methods resulting to analyses that provide new insights in environmental science, particularly in the areas of: environmental planning and management; protected areas development, planning, and management; community-based resources management; environmental chemistry and toxicology; environmental restoration; social theory and environment; and environmental security and management.