优先考虑土壤中的污染源和潜在有毒元素,使用从微观和宏观角度进行概率源特定的生态健康风险评估
Guanghui Guo1, Shiqi Chen1, Jinlong Zhang1
1Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Journal of hazardous materials
|September 25, 2025
概括
本研究使用先进的方法确定了采矿区潜在有毒元素 (PTEs) 的关键污染源. 它揭示了电,金和炼为生态和健康风险的主要贡献者,指导有针对性的环境管理.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 风险评估 风险评估
背景情况:
- 土壤潜在有毒元素 (PTEs) 具有重大生态和健康风险,特别是在具有多种污染源的采矿地区.
- 准确确定优先的PTE污染源及其贡献仍然是有效环境管理的挑战.
研究的目的:
- 开发和应用一个全面的框架来识别PTE污染源和量化相关的生态健康风险.
- 确定导致PTE污染的特定工业活动及其对环境和健康负担的相对贡献.
主要方法:
- 综合方法结合了正矩阵分解 (PMF),地质探测器模型 (GDM) 和扫描电子显微镜与能量分散光谱学 (SEM-EDS).
- 概率性生态健康风险评估,以量化与已识别的PTE来源相关的生态和人类健康风险.
- 来源分配分析以将PTE (Cr,Ni,As,Pb,Cd,Zn,Cu) 归因于特定的工业活动.
主要成果:
- 确定了四个主要来源:电 (Cr, Ni),金 (As),Pb/Zn炼 (Pb, Cd, Zn) 和铜矿 (Cu).
- /炼活动是造成生态风险的最大因素,主要是由于 (Cd) 毒性.
- 虽然非致癌性健康风险是可以接受的,但致癌性风险达到警告级别,黄金漏活动 (-) 是主要的驱动因素,特别是在儿童身上.
结论:
- 综合框架准确量化了复杂的采矿环境中土壤PTE的特定来源生态健康风险.
- 调查结果为优先考虑污染控制工作和优化资源限制下的风险管理策略提供了关键的,可操作的见解.
- 强调黄金漏产生的具有显著的致癌风险,需要有针对性的干预措施.
相关概念视频
01:30Environmental Applications of Microorganisms
969
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
969
01:36Types of Toxins
3.2K
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...
3.2K
01:23Sampling Plans
896
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
896
01:25Strategies for Assessing and Addressing Confounding
360
Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
360