Scholarlink

<p>Polycyclic aromatic hydrocarbons (PAHs) are toxic pollutants primarily generated from fossil fuel combustion and crude oil release. Rabigh city’s coastal area, home to industries like cement, petrochemical, desalination, and power plants, faces PAH contamination. This study assesses the levels and distribution of 16 priority PAHs in surface and near-bottom waters. PAH concentrations in surface water ranged from 57.99 to 496.21&#xa0;ng/L, with an average of 188.95&#xa0;ng/L, while near-bottom waters showed values from 123.94 to 665.99&#xa0;ng/L, averaging 285.49&#xa0;ng/L. The higher levels in near-bottom waters are due to PAHs’ hydrophobic nature, causing accumulation in sediments. Wind direction influenced PAH concentrations, with higher levels in the southeast and lower levels in the northwest. The highest PAH concentrations were near industrial discharge pipes. Molecular diagnostic ratios and principal component analysis indicated mixed pyrogenic and petrogenic PAH sources. Carcinogenic PAH levels ranged from 2.69–28.00&#xa0;ng/L in surface waters and 4.39–45.90&#xa0;ng/L in near-bottom waters. Toxic equivalent (TEQ) and mutagenic equivalent (MEQ) concentrations were recorded as 3.74&#xa0;ng TEQ/L and 2.71&#xa0;ng MEQ/L for surface waters, and 10.05&#xa0;ng TEQ/L and 7.88&#xa0;ng MEQ/L for near-bottom waters. Higher concentrations of certain PAHs exceeded environmental regulation limits, posing risks to marine ecosystems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Assessment of polycyclic aromatic hydrocarbons (PAHs) levels and spatial distribution in the coastal waters of Rabigh City: Implications for marine pollution and environmental health

  • 期刊论文

  • 发表日期：

    2026年3月9日

查看全文
  • Amr El-Maradny,
  • Ammar M. Bakheet,
  • Mohammed Ghandourah,
  • Mohamed Orif

摘要

Polycyclic aromatic hydrocarbons (PAHs) are toxic pollutants primarily generated from fossil fuel combustion and crude oil release. Rabigh city’s coastal area, home to industries like cement, petrochemical, desalination, and power plants, faces PAH contamination. This study assesses the levels and distribution of 16 priority PAHs in surface and near-bottom waters. PAH concentrations in surface water ranged from 57.99 to 496.21 ng/L, with an average of 188.95 ng/L, while near-bottom waters showed values from 123.94 to 665.99 ng/L, averaging 285.49 ng/L. The higher levels in near-bottom waters are due to PAHs’ hydrophobic nature, causing accumulation in sediments. Wind direction influenced PAH concentrations, with higher levels in the southeast and lower levels in the northwest. The highest PAH concentrations were near industrial discharge pipes. Molecular diagnostic ratios and principal component analysis indicated mixed pyrogenic and petrogenic PAH sources. Carcinogenic PAH levels ranged from 2.69–28.00 ng/L in surface waters and 4.39–45.90 ng/L in near-bottom waters. Toxic equivalent (TEQ) and mutagenic equivalent (MEQ) concentrations were recorded as 3.74 ng TEQ/L and 2.71 ng MEQ/L for surface waters, and 10.05 ng TEQ/L and 7.88 ng MEQ/L for near-bottom waters. Higher concentrations of certain PAHs exceeded environmental regulation limits, posing risks to marine ecosystems.