相关实验视频

Updated: Sep 18, 2025

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations

Published on: September 11, 2016

无机污染物在积极侵蚀历史沿海城市固体废物填埋场中的分类和漏行为

Ian T Burke¹, Patrizia Onnis², Alex L Riley³

¹School of Earth and Environment, University of Leeds, Leeds, United Kingdom.

Marine pollution bulletin

|June 26, 2025

概括

侵蚀的沿海垃圾填埋场释放金属载体颗粒进入海洋环境. 虽然浸出是最小的,但颗粒物分散对海洋生物构成风险,具体污染物的影响尚不清楚.

科学领域:

环境科学环境科学
地质化学地质化学
海洋生物学海洋生物学

背景情况:

沿海城市固体废物填埋场正在被侵蚀,将颗粒物释放到海洋生态系统中.
分散颗粒中的金属 (化物) 污染物对海洋群体构成潜在风险.
了解污染物物种化和固体相关联对于风险评估至关重要.

研究的目的:

调查从侵蚀沿海垃圾填埋场的细分物质的固体相组成.
确定这些材料在脱离离子水和海水中的金属化物出率.
评估分散污染物对海洋生态系统带来的潜在风险.

主要方法:

从三个积极侵蚀的沿海垃圾填埋场收集了细分物质.
分析了样品的组成和金属含量.
使用脱离离子水和海水进行了浸出试验.

主要成果:

样本中含有高度的潜在有毒元素 (如,Cd,Cr,Cu,Pb,Ni,Zn).
在去离子化水和海水中,金属化物化率非常低 (<1重量%) .
细分材料 (石英颗粒和泥矩阵) 很容易被运输到海上.
优先污染物 (As, Cu, Pb, Zn) 存在于颗粒上的吸附或沉形式或作为离散的小颗粒.

结论:

颗粒物分散是这些垃圾填埋场污染物运输的主要方式.
在皮质沉积物中稀释可能会减少整体生态系统影响.
对特定的海洋生物 (过器/底部食者) 和热带生物放大造成的风险仍然不太清楚.

关键词:

垃圾填埋场的侵蚀和侵蚀金属 (化物) 的类型城市固体废物的组成颗粒物颗粒物颗粒物污染问题污染问题在XASAS中 μXAS.

更多相关视频

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Published on: October 21, 2016

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Published on: July 4, 2014

相关概念视频

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Factors Affecting Solubility

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:

Extraction: Advanced Methods

Extraction: Advanced Methods

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...