相关实验视频

Updated: Mar 3, 2026

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron OxyHydroxides, Trace Elements, and Bacteria

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron OxyHydroxides, Trace Elements, and Bacteria

Published on: December 19, 2017

有机污染物的定量来源导向,生物积累和毒性在一个以前的采矿区

Constantin Nechita¹, Elisabeta-Irina Geana², Roxana Elena Ionete³

¹Department of Biometry, National Institute for Research and Development in Forestry "Marin Drăcea", Calea Bucovinei, 73 Bis, 725100, Câmpulung Moldovenesc, Romania.

Environmental geochemistry and health

|March 2, 2026

概括

像PCB和PAH这样的持久有机污染物 (POP) 污染了森林生态系统. 树叶有效地生物累积这些污染物,表明中度至高风险,并强调需要采取监管行动.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
污染监测污染监测污染监测

背景情况:

持久性有机污染物 (POP) 对人类健康和森林生态系统构成重大风险.
多双 (PCB) 和多环芳 (PAH) 是主要的环境污染物.
森林,特别是前工业区的森林,容易受到POP积累的影响.

研究的目的:

评估罗马尼亚森林生态系统中14种PCB和15种PAH (7LMW,8HMW) 的污染水平和来源.
评估这些污染物在各种树种,垃圾和土壤中的潜在毒性和生物积累.
确定适合生态系统健康评估的生物指标.

主要方法:

对叶子 (Quercus robur,Fagus sylvatica,Pinus sylvestris,Taxus baccata,Chamaecyparis lawsoniana) 的分析,垃圾和土壤样本的分析.
使用已确定的分析技术量化14种PCB和15种PAH (Σ7 LMW, Σ8 HMW).
通过诊断比率分析和统计方法识别来源;使用毒性等效因子 (TEF) 评估毒性.

主要成果:

随着土壤深度的增加,PAH度 (Σ7 LMW, Σ8 HMW) 降低,而PCB度 (Σ14 PCB) 增加.
查梅西帕里斯·劳森亚纳和奎尔库斯·罗伯 (Quercus robur) 的PAH和PCB积累最多.
鉴定出PAH的来源是采矿和住宅活动中石油和 pyrogenic 燃烧的混合物;HMW PAHs 构成中度至高毒性风险,特别是在垃圾中.

结论:

树 (Quercus robur) 的叶子是有效的生物指标,用于评估受POPs影响的生态系统健康.
该研究强调需要加强POP监测和采取更严格的监管措施.
减少空气污染的战略和可持续的做法对于减轻森林生态系统的风险至关重要.

关键词:

生物积累因子的生物积累因子生态风险评估生态风险评估持久性有机污染物 (POP) 是一种持续性有机污染物.来源分配的分配方式毒性等效性有毒性等效性

更多相关视频

Watershed Planning within a Quantitative Scenario Analysis Framework

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

A Whole Cell Bioreporter Approach to Assess Transport and Bioavailability of Organic Contaminants in Water Unsaturated Systems

A Whole Cell Bioreporter Approach to Assess Transport and Bioavailability of Organic Contaminants in Water Unsaturated Systems

Published on: December 24, 2014

相关概念视频

Types of Toxins

Types of Toxins

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...

Toxicity Testing in Animals

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...