恢复的Moulili河床受到矿开采活动的影响:潜在的有毒金属丰富因子和环境风险 (加的Moanda)
Madi Guirema Abaker1, Davy Silas Mbadinga BoubalA1, Estelle Dumont1
1LAboratoire de Recherche Multidisciplinaire en Environnement (LARME), Université Des Sciences Et Techniques de Masuku (USTM), Unité de Recherche En Sciences de La Terre Et de L'Environnement (URESTE), 941 Mbaya, Franceville, Gabon.
Environmental science and pollution research international
|August 28, 2025
概括
在加的Moulili河的物理修复,受40年采矿的影响,并没有完全消除金属缩. 需要进一步的研究来评估这种环境修复工作的长期有效性.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 生态毒理学 生态毒理学
背景情况:
- 热带地区的采矿活动往往缺乏初始的环境预防措施,导致河流污染和物理变化.
- 加的Moulili河受40年采矿的影响,需要对其恢复过程进行研究.
研究的目的:
- 评估物理恢复在减轻矿业影响的河流系统中的金属污染方面的有效性.
- 分析Moulili河沉积物中的金属元素的分布和丰富.
主要方法:
- 在表面和深沉积物 (40厘米) 中对金属元素 (Mn,Fe,Co,Ni,Cu,Zn,Pb,Cr,Sn) 的分析.
- 丰富系数 (EF) 和环境影响指数的计算.
- 确定河流沿线特定金属的减排率.
主要成果:
- 虽然潜在的有毒金属含量很高,但缩因子表明Mn,Fe,Co,Ni,Cu和Zn没有显著的缩.
- 观察到 (Pb) 的中等缩,以及 (Cr) 和锡 (Sn) 的显著缩.
- 来自洗衣厂的样本中,锡的缩含量最高,缩含量随着距离采矿现场的距离而变化.
结论:
- 仅仅进行物理恢复是不足以完全消除矿业影响的河流系统中的金属丰富.
- 环境影响指数可能不适用于天然富含金属母岩的地区.
- 河流悬浮物质表现出金属分离,表明复杂的转移过程影响金属的移动性.
相关概念视频
The Periodic Table and Organismal Elements
20.0K
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...
20.0K
Extraction: Advanced Methods
526
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
526
Types of Toxins
2.0K
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...
2.0K


