基于受体模型的潜在有毒元素的来源和风险评估在一个受人类影响的海湾,地中海东南部的地中海
Ghada F El-Said1, Gehan M El Zokm1, Abeer A M El-Sayed1
1National Institute of Oceanography and Fisheries, NIOF, Cairo, Egypt.
The Science of the total environment
|December 19, 2025
概括
埃及阿布基尔湾显示,海水和沉积物中的潜在危险元素 (PTEs) 极度污染,由海洋,工业和农业来源驱动. 需要紧急管理,以保护这种生态脆弱的海洋环境.
科学领域:
- 环境化学环境化学
- 海洋地球化学 海洋地球化学
- 污染评估 污染评估
背景情况:
- 阿布吉尔湾面临着严重的环境压力.
- 对潜在危险元素 (PTE) 的评估对于了解海洋生态系统健康至关重要.
研究的目的:
- 在阿布基尔湾的海水和沉积物中对PTE进行全面评估.
- 为了识别和量化污染源.
- 评估这些元素带来的生态风险.
主要方法:
- 在海水和沉积物样本中分析PTE.
- 污染指数 (mCd,PLI) 和生态风险指数的计算.
- 使用主要组件分析 (PCA),层次组件分析 (HCA) 和正矩阵分解 (PMF) 来进行源分配.
主要成果:
- 沉积物主要由Mg和Ca占据主导地位,其中素,B,Na和Li的丰富程度显著.
- 污染指数表明污染水平极高.
- 构成显著的生态风险,而As和Sb构成低风险.
- 海水分析显示Br,I,B,Li和Sb在背景水平以上的缩.
- 分区研究表明,像As,Sb,F,Br,I,B和Li这样的PTE主要处于溶解阶段.
- 来源分配确定了海洋-人类和工业-地化学因素是造成污染的主要原因.
结论:
- 阿布基尔湾受到严重污染,在生态上很脆弱.
- 污染源于自然过程,工业活动,废水排放和农业下水的结合.
- 严格的监测和有针对性的管理战略对于保护海湾的海洋环境至关重要.
更多相关视频
05:47In Silico Modeling Method for Computational Aquatic Toxicology of Endocrine Disruptors: A Software-Based Approach Using QSAR Toolbox
Published on: August 28, 2019
14.5K
08:00Screening for Endocrine Activity in Water Using Commercially-available In Vitro Transactivation Bioassays
Published on: December 4, 2016
7.9K
相关概念视频
01:26Toxic Reactions: Overview
1.8K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
1.8K
01:36Types of Toxins
3.1K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
3.1K
01:27The Periodic Table and Organismal Elements
22.1K
Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally occurring, and only a few of them are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.
Periodic Table Provides Information...
Periodic Table Provides Information...
22.1K