Laboratoire de Gestion, Traitement et Valorisation des Déchets, Faculté des Sciences, Département de Géologie et Environnement, Université de Lomé, Lomé BP 1515, Togo.
Faculty of Engineering, "Vasile Alecsandri" University of Bacau, 157 Calea Marasesti, 600115 Bacau, Romania.
Int J Environ Res Public Health. 2023 Jan 17;20(3):1666. doi: 10.3390/ijerph20031666.
The Lake Togo-Lagoon of Aného is located in the coastal zone where phosphorite mining is carried out. This mining discharges all kinds of waste such as fuel oil into the surrounding environment without prior treatment. Moreover, the hydrosystem receives runoff and river inputs after having crossed and leached from mining and urban soils. This study aims to determine the polycyclic aromatic hydrocarbons (PAHs) contamination in commercially consumed fish species () from that hydrosystem and the associated health risks for consumers. For that, fish sample collection was performed during the dry season. Afterwards, their muscles, gills, and livers were cut and 12 PAHs were analyzed using gas chromatography coupled with a mass spectrometer (GC-MS). The total PAHs (tPAHs) concentrations in fish tissues ranged from 5.24 to 48.40 µg/kg with average concentration of 14.51 ± 8.95 µg/kg in muscles, from 5.90 to 28.20 µg/kg averaging 14.90 ± 5.19 µg/kg in gills, and from 43.20 to 149.00 µg/kg with an average of 80.74 ± 27.08 µg/kg in livers. The average concentrations of low molecular weight PAHs (LMW PAHs) were 10.82 ± 9.61 µg/kg in muscles, 8.25 ± 5.43 µg/kg in gills, and 47.97 ± 22.56 µg/kg in livers whereas those of high molecular weight of PAHs (HMW PAHs) were 4.10 ± 2.14 µg/kg in muscles, 7.98 ± 3.96 µg/kg in gills, and 32.77 ± 8.66 µg/kg in livers. An overall trend of decreasing concentrations with increasing fish size classes was observed for some PAHs (Naphtalene, Pyrene in muscles, for Pyrene, Benzo(a)Anthracene, Chrysene in gills and for Naphtalene, Phenanthrene in livers). The PAHs in these fish might have pyrogenic and petrogenic sources, with the dominance of pyrogenic, and all of the total hazard quotients (THQ) are less than 1. This situation must not be neglected for better planning sustainable management of the target ecosystem.
塔戈-拉戈湖位于阿内霍沿海地区，这里正在进行磷矿开采。该矿未经预先处理，将各种废物（如燃油）排放到周围环境中。此外，水系统在穿过和浸出采矿和城市土壤后，接收径流和河流输入。本研究旨在确定来自该水系统的商业食用鱼类（）中多环芳烃（PAHs）的污染情况，以及对消费者的相关健康风险。为此，在旱季进行了鱼类样本采集。之后，将其肌肉、鳃和肝脏切开，使用气相色谱-质谱联用仪（GC-MS）分析 12 种多环芳烃。鱼类组织中总多环芳烃（tPAHs）浓度范围为 5.24 至 48.40 µg/kg，肌肉中平均浓度为 14.51 ± 8.95 µg/kg，鳃中为 5.90 至 28.20 µg/kg，平均浓度为 14.90 ± 5.19 µg/kg，肝脏中为 43.20 至 149.00 µg/kg，平均浓度为 80.74 ± 27.08 µg/kg。低分子量多环芳烃（LMW PAHs）的平均浓度为肌肉中的 10.82 ± 9.61 µg/kg，鳃中的 8.25 ± 5.43 µg/kg，肝脏中的 47.97 ± 22.56 µg/kg；高分子量多环芳烃（HMW PAHs）的平均浓度为肌肉中的 4.10 ± 2.14 µg/kg，鳃中的 7.98 ± 3.96 µg/kg，肝脏中的 32.77 ± 8.66 µg/kg。对于一些 PAHs（萘、肌肉中的苊、芘、苯并[a]蒽、荧蒽，鳃中的芘、苯并[e]芘），随着鱼体大小类别的增加，浓度呈下降趋势。这些鱼类中的 PAHs 可能来自热成因和母岩成因，以热成因为主，所有总危害系数（THQ）均小于 1。为了更好地规划目标生态系统的可持续管理，这种情况不容忽视。
