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首页> 外文期刊>Canadian Journal of Pure and Applied Sciences >SOURCE IDENTIFICATION AND ECOTOXICOLOGICAL RISK ASSESSMENT OF POLYCYCLIC AROMATIC HYDROCARBONSIN SEDIMENT FROM KOMADUGU RIVER BASIN, YOBE STATE, NIGERIA
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SOURCE IDENTIFICATION AND ECOTOXICOLOGICAL RISK ASSESSMENT OF POLYCYCLIC AROMATIC HYDROCARBONSIN SEDIMENT FROM KOMADUGU RIVER BASIN, YOBE STATE, NIGERIA

机译：尼日利亚尤贝州科马杜古河盆地多环芳烃碳源沉积物的来源鉴定和生态毒理学风险评估

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摘要

Polycyclic aromatic hydrocarbons (PAHs) were determined in sediments from five sampling points designated as S1 toS5 from Komadugu River basin, Yobe State, Nigeria. The concentrations of PAHs in sediment samples ranged from1.42E-04 to 1.65E-01 mg/kg. Dry season were observed to show the highest concentrations of all the studied PAHs witha total value of 2.72E+00 mg/kg, while the rainy season shows the lowest concentrations with a total value of 1.88E+00mg/kg. The concentrations of the studied PAHs in the sediment samples were below the maximum allowableconcentrations (MACs) of 0.15 to 3.0 mg/kg. Results of the study shows that the ratio of BaA/BaA + Chr were between0.40 and 0.50 with mean of 0.57, which indicate pyrogenic sources, the Ant/Ant + Phe ratios were between 0.21 and 0.63indicating fuel combustion sources, while Flua/Flua+Pyr of 0.44 confirmed the combustion of fuel as the main PAHsource in the study area. The diagnostic ratios show both fuel combustion and pyrogenic sources of PAH in the studyarea. The m-ERM-q in the sediments were below 0.1 indicating an 11 percent probability of toxicity and are thereforeclassified as low priority sites.
机译：在尼日利亚尤贝州科马杜古河流域的五个采样点S1至S5的沉积物中测定了多环芳烃（PAH）。沉积物样品中PAHs的浓度范围为1.42E-04至1.65E-01 mg / kg。观察到旱季显示所有研究的PAHs的最高浓度，总值为2.72E + 00 mg / kg，而雨季则显示最低的浓度，总值为1.88E + 00mg / kg。沉积物样品中研究的PAHs浓度低于最大允许浓度（MACs）0.15至3.0 mg / kg。研究结果表明，BaA / BaA + Chr比在0.40至0.50之间，平均值为0.57，这表明热源，Ant / Ant + Phe比在0.21至0.63之间，指示燃料燃烧源，而Flua / Flua + Pyr为0.44，证实了研究区域中燃料燃烧是PAH的主要来源。诊断率显示了研究区域中PAH的燃料燃烧和热源。沉积物中的m-ERM-q低于0.1，表明毒性可能性为11％，因此被归类为低优先级地点。

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