蒙古矿区土壤被潜在有毒元素污染的特点
Sungmoon Yoon1,2, Duk-Min Kim3, Soonyoung Yu4
1Green School, Korea University, Seoul, 02841, South Korea.
Environmental geochemistry and health
|December 26, 2023
概括
蒙古矿山中的土壤污染与矿石类型有关, (As) 和 (Pb) 等特定元素主导着不同的矿山类别. 了解这些模式是国家土壤恢复战略的关键.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 采矿工程 采矿工程 采矿工程
背景情况:
- 潜在有毒元素 (PTEs) 对土壤的污染是采矿地区的重大环境问题.
- 了解PTE的来源和分布对于有效的环境管理和整治至关重要.
研究的目的:
- 在蒙古的采矿区,对全国范围的土壤受PTE污染进行鉴定.
- 为了确定不同类型的矿山对土壤污染模式的影响.
- 为了比较正矩阵因数分解 (PMF) 与传统的来源分配统计方法的有效性.
主要方法:
- 在蒙古272个矿山进行了全国范围的土壤采样,收集了1425个表土样本.
- 积极矩阵因数分解 (PMF) 的应用用于PTE的来源识别和分配.
- 将PMF结果与主要组件分析 (PCA) 和等级集群分析 (HCA) 的比较.
主要成果:
- 在PMF分析中,发现了四个主要因素导致土壤污染:As (因素1),Pb-Zn-Cd (因素2),Ni (因素3) 和Cu-Cd (因素4).
- 特定的矿山类型显示出不同的污染配置:硬岩金矿 (高As),黄金矿 (高Ni) 和普通金属/化物/煤矿 (高Pb-Zn-Cd和Cu-Cd).
- 当地的地质和矿石特性影响了污染模式,在一些金矿中发现了Hg合并.
结论:
- 矿井类型是蒙古矿区土壤污染的主要驱动因素,与矿石矿藏中的元素的地化学亲和关系有关.
- 与传统的统计方法相比,PMF是一种优越的方法来分类和解释土壤污染源.
- 调查结果为制定针对性的国家土壤修复和环境保护战略提供了基础,在受采矿影响的地区.
更多相关视频
11:43Dissolved Solute Sampling Across an Oxic-Anoxic Soil-Water Interface Using Microdialysis Profilers
Published on: March 24, 2023
1.4K
09:23Removal 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
9.8K
相关概念视频
Types of Toxins
1.7K
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...
1.7K
Precipitation and Co-precipitation
1.8K
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...
1.8K
The Periodic Table and Organismal Elements
179.0K
Overview
179.0K
Voltammetry: Stripping Methods
236
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
236
