Department of Chemistry, Delta State University, P.M.B. 1, Abraka, Nigeria.
Department of Chemistry, Delta State University, P.M.B. 1, Abraka, Nigeria.
Mar Pollut Bull. 2021 Jun;167:112351. doi: 10.1016/j.marpolbul.2021.112351. Epub 2021 Apr 22.
This study assessed the concentrations, sources, and risks of polycyclic aromatic hydrocarbons (PAHs) in sediments from the Rivers Niger, Ase and Forcados in the western Niger Delta. The concentrations of PAHs (in μg kg dry weight), as determined by gas chromatography-mass spectrometry, in sediments from these rivers varied from 2400 to 19,000, 2930 to 16,100, and from 1620 to 19,800 for the Niger, Ase and Forcados Rivers respectively. High molecular weight (HMW) PAHs were the most prevalent compounds present in these sediments. An assessment of the possible ecological and human health risks suggested high risks for both organisms and humans. The PAH source analysis suggested that sediments from these river systems were contaminated with PAHs arising from burning of biomass, gasoline/diesel emissions, burning of natural gas, and oil spillages.
本研究评估了尼日尔河、阿西河和福卡多斯河在尼日尔三角洲西部的沉积物中多环芳烃（PAHs）的浓度、来源和风险。通过气相色谱-质谱法测定，这些河流沉积物中的 PAHs 浓度（以干重微克计）分别为 2400 至 19000、2930 至 16100 和 1620 至 19800。高分子量（HMW）PAHs 是这些沉积物中最常见的化合物。对可能的生态和人类健康风险的评估表明，这些河流系统的沉积物对生物和人类都存在高风险。PAH 来源分析表明，这些河流系统的沉积物受到了来自生物质燃烧、汽油/柴油排放、天然气燃烧和溢油的 PAHs 污染。
