Alinnor I J
Department of Pure and Industrial Chemistry, Federal University of Technology, P.M.B. 1526, Owerri, Imo State, Nigeria.
Environ Monit Assess. 2005 Mar;102(1-3):15-25. doi: 10.1007/s10661-005-1011-3.
The elemental contaminants in water and fish samples from Aba river were studied. The elements studied were Zn, Ni, As, Hg, Co and Mn. Three water samples and three samples of different fish species were collected from different locations in the river. The water and fish samples were analysed for elemental contaminants using Atomic Absorption Spectrophotometer (AAS). The elemental toxicants Zn and Mn were identified in appreciable amounts in fresh fish species namely, Lates niloticus and Oriochronis niloticus, of mean values 8.012 ppm and 0.861 ppm, respectively. The analysis also shows arsenic concentration of mean value 0.01 ppm in Lates niloticus. The analysis of frozen fish samples purchased from the Waterside market located near the river shows Ni and Hg levels of mean values 0.83 ppm and 0.02 ppm, respectively. The levels of elemental contaminants As, Zn, Hg and Mn from the water samples have mean values 0.082 ppm, 11.284 ppm, 0.201 ppm and 1.024 ppm, respectively. There are five industries that discharge waste products into Aba river. In view of this, there is a need to determine the level of pollution of the river, since the inhabitants depend on the river for their drinking water, fishing and other domestic uses. This study is aimed at determining the level of heavy metal toxicants in fish and water samples from the river. The effect of these elemental contaminants and the associated health hazards were examined.
对阿坝河采集的水样和鱼样中的元素污染物进行了研究。所研究的元素为锌（Zn）、镍（Ni）、砷（As）、汞（Hg）、钴（Co）和锰（Mn）。从该河不同位置采集了三个水样和三种不同鱼类的样本。使用原子吸收分光光度计（AAS）对水样和鱼样中的元素污染物进行分析。在淡水鱼尼罗尖吻鲈（Lates niloticus）和尼罗罗非鱼（Oriochronis niloticus）中鉴定出了含量可观的元素毒物锌和锰，其平均值分别为8.012 ppm和0.861 ppm。分析还显示尼罗尖吻鲈中的砷浓度平均值为0.01 ppm。对从河边的水边市场购买的冷冻鱼样的分析表明，镍和汞的含量平均值分别为0.83 ppm和0.02 ppm。水样中元素污染物砷、锌、汞和锰的含量平均值分别为0.082 ppm、11.284 ppm、0.201 ppm和1.024 ppm。有五个行业向阿坝河排放废物。鉴于此，由于居民依赖该河获取饮用水、捕鱼及用于其他家庭用途，有必要确定该河的污染程度。本研究旨在确定该河鱼样和水样中重金属毒物的含量水平。并研究了这些元素污染物的影响以及相关的健康危害。
