尼日利亚奥约州Agodi水库和Ogunpa河空心菜对重金属污染的生物耐受性比较

IF 1.1 4区 环境科学与生态学 Q3 MARINE & FRESHWATER BIOLOGY
P. Ogungbile, P. Ayeku, A. Ajibare
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引用次数: 3

摘要

在Agodi水库及其补给源Ogunpa河调查了空心菜(Ipomoea aquatica)对重金属的生物耐受性,以考察水生污染的影响。I.aquatica是每月从Ogunpa河和Agodi水库采集的。采用原子吸收分光光度法测定了样品中重金属的含量。采用箱图法评估植物对重金属的耐受性,并计算生态风险商(ERQ)以表明对人类健康和环境的威胁。工厂中钴(Co)、铬(Cr)、铜(Cu)、镍(Ni)和锌(Zn)的浓度低于标准阈值,但镉(Cd)、铁(Fe)、锰(Mn)和铅(Pb)的含量高于允许水平。1月(3.450)、5月(3.125)、6月(8.175)、8月(1.900)和9月(2.025),Ogunpa河水生植物中Cd的ERQ均处于较高的生态风险水平。水库和河流植物中Co、Cr、Cu和Ni的ERQ都小于1。本研究中对重金属的ERQ和生物耐受性表明,水曲柳对重金属具有有效的结合作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative biotolerance of water spinach, Ipomoea aquatica, to heavy metal pollution in the Agodi Reservoir and the Ogunpa River, Oyo State, Nigeria
The biotolerance of water spinach (Ipomoea aquatica) to heavy metals was investigated in the Agodi Reservoir and its supplying source, the Ogunpa River, to examine the impact of aquatic pollution. I. aquatica was collected monthly from the Ogunpa River and the Agodi Reservoir. Atomic absorption spectrophotometry was used to analyse the concentration of heavy metals in the samples. A box plot was used to evaluate the tolerance of the plants to heavy metals and ecological risk quotients (ERQ) were calculated to indicate the threat to human health and environment. The concentrations of cobalt (Co), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in the plants were below standard thresholds, but cadmium (Cd), iron (Fe), manganese (Mn) and lead (Pb) were present in higher than permissible levels. The ERQ of Cd in I. aquatica in the Ogunpa River was at an elevated ecological risk level in January (3.450), May (3.125), June (8.175), August (1.900) and September (2.025). The ERQ of Co, Cr, Cu and Ni in plants from both the reservoir and the river were less than one. The ERQ and biotolerance of heavy metals in this study indicated that I. aquatica is effective in binding heavy metals.
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来源期刊
African Journal of Aquatic Science
African Journal of Aquatic Science MARINE & FRESHWATER BIOLOGY-
CiteScore
3.90
自引率
7.10%
发文量
31
审稿时长
>12 weeks
期刊介绍: The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.
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