Some physico-chemical properties and the concentrations of the metals Fe, Mn, Ni, Cd, Cr, Co, Cu, Pb, and Zn in water and sediments were examined from September 2011 to January 2012 in Bodo Creek, where oil spills have been recurrent. Temperature, pH, total dissolved solid, conductivity, salinity, dissolved oxygen, biological oxygen demand (BOD), chemical oxygen demand (COD), total hardness, sulfate, nitrate, and phosphate were determined in surface water. Particle size, total organic matter (TOM), and pH were also determined in the sediments. The parameters were within permissible limits except the mean values of BOD, COD, total hardness, and sulfate that exceeded levels permissible for domestic use. The sediments consisted mainly of sand, with TOM ranging from 0.2% to 5.5%. With the exception of cadmium that was below detection limit, metal levels (mg kg−1) in the sediments were 12 (Mn), 1070 (Fe), 10 (Cu), 10 (Zn), 5.3 (Cr), 1.1 (Pb), 1.0 (Ni), and 0.5 (Co) while in water they were 24, 98, 21, 6.9, 4.0, 0.6, 0.18, and 0.16, respectively. The latter were higher than World Health Organization recommended permissible levels for both surface and drinking water.

中文翻译：

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尼日利亚尼日尔三角洲 Bodo Creek 水和沉积物的理化性质和金属含量评估

2011 年 9 月至 2012 年 1 月，在博多溪（Bodo Creek）对水和沉积物中的一些理化性质和金属 Fe、Mn、Ni、Cd、Cr、Co、Cu、Pb 和反复发作。测定地表水中的温度、pH、总溶解固体、电导率、盐度、溶解氧、生物需氧量 (BOD)、化学需氧量 (COD)、总硬度、硫酸盐、硝酸盐和磷酸盐。还测定了沉积物中的粒径、总有机物 (TOM) 和 pH 值。除了BOD、COD、总硬度和硫酸盐的平均值超出家庭使用允许的水平外，其他参数均在允许的范围内。沉积物主要由沙子组成，TOM 范围为 0.2% 至 5.5%。除了低于检测限的镉，沉积物中的金属含量 (mg kg-1) 为 12 (Mn)、1070 (Fe)、10 (Cu)、10 (Zn)、5.3 (Cr)、1.1 (Pb)、1.0 (Ni) 和 0.5 ( Co) 在水中时分别为 24、98、21、6.9、4.0、0.6、0.18 和 0.16。后者高于世界卫生组织建议的地表水和饮用水的允许水平。