Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, P.O. 21556 Alexandria, Egypt.
Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, P.O. 21556 Alexandria, Egypt.
Mar Pollut Bull. 2023 Sep;194(Pt B):115262. doi: 10.1016/j.marpolbul.2023.115262. Epub 2023 Jul 17.
The variations in the levels of n-alkanes and Polycyclic Aromatic Hydrocarbons (PAHs) in the sediment of the Nile Delta coast and extended to Bardaweel Lagoon along the Mediterranean were investigated during September 2021. The total n-alkane concentrations in the sediment samples ranged from 18.85 to 164.37 μg/g with an average value of 51.98 ± 17.49 μg/g. Similarly, the ΣPAHs concentrations ranged between 4.55 and 207.48 ng/g with an average of 27.89 ± 49.82 ng/g. The carbon preference index (CPI) values were in the 0.21 to 1.39 range, indicating variations in the sources of n-alkane at the analyzed locations. The mean carbon number (MCN) values ranged from 7.41 to 15.47, with an average of 13.34 ± 1.69. The levels of both low and high molecular weight PAHs were lower than the median and low effective range values (ERM and ERL). The computed total TEQ value varied from 0.102 to 4.129 ng/g in the sediment samples under investigation.
本研究于 2021 年 9 月调查了尼罗河三角洲沿海地区以及地中海沿岸 Bardawil 泻湖的沉积物中 n-烷烃和多环芳烃 (PAHs) 的水平变化。沉积物样品中的总 n-烷烃浓度范围为 18.85 至 164.37μg/g，平均值为 51.98±17.49μg/g。同样，ΣPAHs 浓度范围在 4.55 至 207.48ng/g 之间，平均值为 27.89±49.82ng/g。碳偏好指数 (CPI) 值在 0.21 至 1.39 范围内，表明在所分析的地点 n-烷烃的来源存在变化。平均碳数 (MCN) 值范围从 7.41 到 15.47，平均值为 13.34±1.69。低分子量和高分子量 PAHs 的水平均低于中值和低有效范围值 (ERM 和 ERL)。在所研究的沉积物样品中，计算得出的总 TEQ 值从 0.102 到 4.129ng/g 不等。
