Bioaccumulation of heavy metals in two matrices of the Bonny/New Calabar River Estuary in Niger Delta, Nigeria

被引：4
|
作者：
Onojake, M. C. [1 ]
Sikoki, F. D. [2 ]
Babatunde, B. B. [3 ]
Akpiri, R. U. [3 ]
Akpuloma, D. [2 ]
Omokheyeke, O. [2 ]
机构：
[1] Univ Port Harcourt, Dept Pure & Ind Chem, Choba, Rivers State, Nigeria
[2] Univ Port Harcourt, Ctr Marine Pollut Monitoring & Seafood Safety, Choba, Rivers State, Nigeria
[3] Univ Port Harcourt, Dept Anim & Environm Biol, Choba, Rivers State, Nigeria
来源：
OCEAN SCIENCE JOURNAL | 2015年 / 50卷 / 02期
关键词：
heavy metals; matrices; bioaccumulation; Bonny River; Niger Delta; Nigeria; WATER;
D O I：
10.1007/s12601-015-0016-2
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
The concentrations of Ca, Mg, K, Zn, Pb, Cd, Co, Cr, Cu, Fe, Ni and Na were determined in the sediment and biota of the Bonny/New Calabar River Estuary in Niger Delta, Nigeria using atomic absorption spectrophotometer A-100. The concentration of the respective metals varied between 2011 and 2012. The range of mean values are presented in mg/kg along with variations at a statistically significant level (P < 0.05). In sediment, only Cr varied significantly (p < 0.05) within the two years. Bioaccumulation factor (BF) indicated a more potent source of metals from sediment than biota, accumulating Zn, Fe and Ni in magnitudes 10, 6 and 5 times more, respectively. The study shows elevated levels of heavy metals in sediment and bioaccumulation in biota. Regular monitoring and comparison of results with World Health Organization maximum permissible limits should be carried out, in order not to allow the metal concentration to reach alarming levels.
引用
收藏
页码：203 / 208
页数：6
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