摩洛哥地中海沿岸沉积物和双体中的多环芳:空间分布,来源和风险评估
Assia Bouzekry1, Bilal Mghili1, Teresa Bottari2
1LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco.
Environmental pollution (Barking, Essex : 1987)
|October 7, 2024
概括
摩洛哥地中海海洋沉积物和双生物中的多环芳化合物 (PAH) 具有较低的生态和人类健康风险. 建议继续监测海鲜中的PAH,因为海洋生物中的PAH含量不可忽视.
科学领域:
- 环境化学环境化学
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
背景情况:
- 多环芳 (PAH) 是普遍存在的海洋污染物,对海洋生态系统和人类健康产生有害影响.
- 评估PAH的发生,来源和风险对于环境保护和公共卫生至关重要.
研究的目的:
- 为了确定摩洛哥地中海海洋沉积物和双鱼Callista chione中的PAH度和分布.
- 确定PAH来源并评估与PAH暴露相关的生态和人类健康风险.
主要方法:
- 在摩洛哥地中海沿岸收集了5个沉积物样本和75个C. chione标本.
- 在沉积物和双体中分析PAH度,形状和异构比.
- 使用沉积物质量指南 (SQG),风险系数 (RQ),毒性等效因子 (TEF) 和健康风险指数进行风险评估.
主要成果:
- 沉积物PAHs在1至251ng/g (平均50.38ng/g) 之间;双PAHs在1至51ng/g dw (平均16.76ng/g dw) 之间.
- 氧化的概况主要由2环和3环化合物占据主导地位,其度从东北向西北增加.
- 表明了混合的火溶性/性来源;对沉积物,生态和人类健康的风险被评估为低.
结论:
- 沉积物中的PAH含量和来自摩洛哥地中海海岸的C. chione存在较低的生态和人类健康风险.
- 尽管风险较低,但建议持续监测海洋生物中的PAH,因为它们的存在和生物积累潜力.
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