Regional Water and Environmental Sanitation Centre, Kumasi, Ghana.
Department of Civil Engineering, KNUST, Kumasi, Ghana.
Environ Monit Assess. 2019 May 4;191(6):346. doi: 10.1007/s10661-019-7484-2.
The use of macrophytes has been identified as one of the eco-friendly means of remediating soils contaminated with heavy metal(loid)s. This study sought to ascertain the synergistic influences of Hg, As, Cd and Pb on the uptake capacity of Typha capensis in remediating soils contaminated with these pollutants. Uptake of Hg, As, Cd and Pb by this aquatic plant species in metal(loid)-contaminated water and soil was studied in batch culture experiment. The plants were irrigated with standard heavy metal(loid)-simulated solutions. After 20, 40 and 60 days, plant samples were subjected to heavy metal(loid) analysis by a Unicam 969 atomic absorption spectrometer (AAS). The macrophytes were able to remediate all the four selected heavy metal(loid)s when they either existed as individual or when all the four were in the solution; however, the level of uptake by the plant was inhibited when either two of the heavy metals existed in the solution. Typha capensis performs better in the absorption of mercury, arsenic, cadmium and lead in large quantities from polluted water and soil.
利用大型水生植物被认为是修复重金属（类）污染土壤的一种环保方法。本研究旨在确定 Hg、As、Cd 和 Pb 对修复受这些污染物污染的土壤中香蒲吸收能力的协同影响。在批量培养实验中研究了该水生植物在受金属（类）污染的水和土壤中对 Hg、As、Cd 和 Pb 的吸收。用标准重金属（类）模拟溶液灌溉植物。20、40 和 60 天后，用 Unicam 969 原子吸收光谱仪（AAS）对植物样品进行重金属（类）分析。当单一存在或四种金属（类）都存在于溶液中时，大型水生植物能够修复所有四种选定的重金属（类）；然而，当两种重金属存在于溶液中时，植物的吸收水平受到抑制。香蒲能够更好地从受污染的水和土壤中大量吸收汞、砷、镉和铅。
