Department of Chemical Sciences, College of Natural Sciences, Redeemer's University, Km 46/48 Lagos-Ibadan Expressway, Redemption City, Mowe, Ogun State, Nigeria.
Environ Monit Assess. 2012 Jan;184(1):89-102. doi: 10.1007/s10661-011-1949-2. Epub 2011 Mar 5.
The accumulation patterns of ten metals in tissues of plant, Eichornia crassipes, and fishes, Hydrocynus forskahlii and Oreochromis mossambicus, were modeled with simple fuzzy classification (SFC) to assess toxic effects of anthropogenic activities on the coastal biota. The plant sample was separated into root, stem, and leaves and the fishes into bones, internal tissues, and muscles. They were analyzed for As, Cd, Cr, Cu, Ni, Pb, V, Fe, Mn, and Zn after wet oxidation of their dried samples. The results were converted into membership functions of five accumulation classes and aggregated with SFC. The classification results showed that there was no metal accumulation in the plant parts while the fishes were classified into low accumulation category. The internal tissues of the fishes had higher metal accumulation than the other parts. Generally, Fe and Mn had highest concentrations in the biota but are natural to the area and may not constitute significant risk. Cr had the highest transfer and accumulation from the coastal water into the aquatic lives and may be indicative of risk prone system being a toxic metal. Metal contaminations in the zone had not significantly accumulated in the biota making them less prone to risk associated with metal accumulation.
采用简单模糊分类（SFC）对植物、凤眼莲和鱼类组织中十种金属的积累模式进行建模，以评估人为活动对沿海生物群的毒性影响。将植物样本分为根、茎和叶，鱼类分为骨骼、内部组织和肌肉。对其干燥样本进行湿氧化后，分析砷、镉、铬、铜、镍、铅、钒、铁、锰和锌。结果被转换为五个积累类别的隶属函数，并与 SFC 进行了汇总。分类结果表明，植物部分没有金属积累，而鱼类则被归类为低积累类别。鱼类的内部组织比其他部分具有更高的金属积累。一般来说，铁和锰在生物群中浓度最高，但对该地区来说是天然的，可能不会构成重大风险。铬从沿海水中向水生生物的转移和积累最高，可能表明易受风险的系统是一种有毒金属。该区域的金属污染没有在生物群中大量积累，使它们不太容易受到与金属积累相关的风险的影响。
