Department of Biological Sciences, Beirut Arab University, P. O. Box 11-5020, Riad El Solh 11072809, Beirut, Lebanon.
Department of Chemistry, Beirut Arab University, P.O. Box 11-5020, Riad El Solh 11072809, Beirut, Lebanon.
Environ Monit Assess. 2020 Oct 16;192(11):705. doi: 10.1007/s10661-020-08672-w.
The present study aimed at evaluating the levels of microbiological contamination, total petroleum hydrocarbons (TPHs), and heavy metals (As, Cd, Hg, and Pb) in the edible tissues of commonly consumed fish (8 species) collected from the marine area of Tripoli, Northern Lebanon. Total coliform levels in all sampled fish, and Escherichia coli levels in Liza ramada only, exceeded the permissible limits set by FAO/WHO 2002. Staphylococcus aureus counts were within the recommended thresholds, while sulfate-reducing bacteria levels were the highest in fish of the genus Liza. Salmonella species and Listeria monocytogenes were not detected in all fish analyzed. Analysis of heavy metals levels showed that arsenic exhibited the highest levels among the assessed metals in all genera. Levels of As in Epinephelus, Diplodus, Oblada, and Liza were above the acceptable limits, while Cd levels were below the permissible limits set by the European Commission. Significant negative correlation was found between levels of As and Hg in muscle tissues and fish size (length). Levels of TPHs were the highest in fish of the genus Epinephelus. Significant difference in TPHs contamination was found within three fish genera, with Epinephelus being the most contaminated.
本研究旨在评估来自黎巴嫩北部的的黎波里海域的 8 种常见食用鱼类的可食用组织中的微生物污染水平、总石油烃（TPHs）和重金属（As、Cd、Hg 和 Pb）含量。所有采样鱼类的总大肠菌群含量以及只有拉马达鲈鱼的大肠杆菌含量均超过了 FAO/WHO 2002 规定的允许限度。金黄色葡萄球菌的计数在推荐阈值内，而硫酸盐还原菌的水平在丽鱼属的鱼类中最高。在所分析的所有鱼类中均未检测到沙门氏菌和单增李斯特菌。重金属水平分析表明，在所评估的所有金属中，砷的含量最高。所有属中的 Epinephelus、Diplodus、 Oblada 和 Liza 的砷含量均超过可接受限度，而 Cd 含量低于欧盟委员会规定的允许限度。肌肉组织中 As 和 Hg 水平与鱼体大小（长度）之间存在显著的负相关关系。在 Epinephelus 属的鱼类中 TPHs 的含量最高。在三个鱼类属内发现 TPHs 污染存在显著差异，其中 Epinephelus 属的污染最严重。
