使用基于索引的模型进行地下水污染和风险评估:对尼日利亚东部伊戈-埃蒂蒂地区的案例研究
Daniel N Obiora1, Emmanuel T Omeje2, Francisca N Okeke1
1Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.
Environmental monitoring and assessment
|July 26, 2023
概括
伊格博-埃蒂蒂的地下水中度到高度污染了和,由于农业做法,造成了显著的生态和人类健康风险. 这项研究强调,迫切需要可持续的水资源管理,以保护这一重要资源.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 水资源管理 水资源管理
背景情况:
- 伊格博-埃蒂蒂地区的水资源短缺和密集农业需要对地下水质量进行评估.
- 地下水污染给修复带来了重大挑战,影响了生态系统和人类健康.
研究的目的:
- 为了评估伊格博-埃蒂蒂的地下水污染指数.
- 评估与地下水污染相关的生态和人类健康风险.
- 确定主要的地质含水层层,以实现可持续的水资源管理.
主要方法:
- 在20个地点使用垂直电探测 (VES) 来划分地下地质和含水层层.
- 对五个地下水样本的物理化学分析确定了水质参数,并确定了污染物.
- 计算了地下水的脆弱性,污染指数和风险评估 (生态和人类健康).
主要成果:
- 第四个地质层被确定为主要可开发的含水层.
- 地下水的脆弱性范围从低 (15%) 到高 (20%),中度的脆弱性占主导地位 (60%).
- 地下水的pH值从酸性到性,污染指数中等到非常高. 始终检测到和. 综合生态风险为中度至非常高,所有样本中人类健康的目标危害指数超过1.
结论:
- 伊格博-埃蒂蒂的地下水受到重金属如和的严重污染,对生态和人类健康构成重大风险.
- 该研究为可持续的地下水管理和决策提供了关键数据,以保护该地区的水质.
- 调查结果强调需要有针对性的干预措施来减轻污染,保护居民和环境的健康.
相关概念视频
01:19Quality of Water
126
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
126
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
71
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
71
01:14Testing Water Quality
136
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
136
01:30Environmental Applications of Microorganisms
61
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...
61