了解分数和影响城市道路沉积沉积物的因素
Yushan Chen1, Zilin Yang1, Jiawei Dong1
1Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China.
The Science of the total environment
|February 7, 2024
概括
城市道路灰尘含有大量的 (P) 污染物,其中酸 (De-P) 是最丰富的分量. 这种P对城市水体构成严重威胁,需要采取污染控制策略.
科学领域:
- 环境科学 环境科学
- 水的质量 水的质量
- 城市水文学 城市水文学
背景情况:
- (P) 是城市道路表面积累的主要污染物.
- 了解P分数和负载对于评估城市水体中的生态风险至关重要.
研究的目的:
- 描述广州公路沉积沉积物 (RDS) 中的P分数和积累负荷.
- 分析P分数与城市因素 (道路,交通,土地使用) 之间的相关性.
- 估计在10年内雨水排水中P的超值概率.
主要方法:
- 在RDS中分析P分数.
- 与城市因素的相关性分析.
- 统计估计P超过概率的概率.
主要成果:
- 酸 (De-P) 显示了最高的积累负荷,其次是其他P分量.
- 低谷深度,道路材料和土地使用分数影响了P分数.
- RDS中的P可能源于道路背景,家庭废物和废水排放.
- 在RDS中,总P在过去十年中超过0.4毫克L-1的概率为30%.
结论:
- 城市RDS是P污染的重要来源.
- 城市因素在P分数分布中起作用.
- 在RDS中的高P度对接收水体构成严重威胁.
- 结果指导城市非点源 P污染管理和生态健康改善.
相关概念视频
01:21The Phosphorus Cycle
36.9K
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
36.9K
04:01Factors Affecting Solubility
33.5K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.5K