相关实验视频

Updated: Jun 6, 2025

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

Published on: December 5, 2019

稀土元素在受采矿影响的水域的地质化学行为,中国西南部

Xuemei Wang¹, Bo Li², Mingtan Zhu³

¹College of Environment Civil Engineering, Chengdu University of Technology, Chengdu 610059, PR China; School of Environment and Resource, Xichang University, Xichang 615000, PR China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, PR China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation & Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China.

The Science of the total environment

|November 28, 2024

概括

采矿污染了水生系统的稀土元素 (REEs). 本研究阐明了中国西南部的REE度,物种化和控制因素.

科学领域:

环境科学环境科学
水文地质学水文地质学
地质化学地质化学

背景情况:

采矿活动是水生环境中稀土元素 (REE) 污染的主要来源.
了解水生系统中的REE行为对于评估生态毒理风险至关重要.

研究的目的:

调查中国西南部矿业影响的水域内地表和地下水中REEs的度,物种化,分化和异常情况.
确定控制这些水生系统中REE分布和行为的主要因素.

主要方法:

季节性地表水,浅地下水和深地下水的采样.
分析水的地质化学,REE度和物种.
评估 REE 分割模式,异常,以及它们与环境参数的关系.

主要成果:

在水体和季节之间,REE度有显著的变化,在地表和浅地下水中含量更高.
环境参数,特别是温度和pH值,影响了REE的物种化和分化.
在地表和地下水之间观察到类似的REE分离模式和异常,表明水充电.

结论:

在水生系统中的REE污染受到采矿活动,水岩相互作用和水地质因素的显著影响.
季节性变化和环境参数在控制 REE 行为的过程中起着至关重要的作用.
了解这些过程对于管理REE污染及其生态影响至关重要.

关键词:

水生系统水生系统.地化学行为地化学行为稀土元素稀土元素稀土元素季节性变化季节性变化

更多相关视频

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Published on: June 21, 2015

相关概念视频

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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...