绿色和蓝色基础设施作为技术关键元素排放的模型系统
Simone Trimmel1, Philipp Spörl2, Daniela Haluza3
1Montanuniversität Leoben, Department General, Analytical and Physical Chemistry, Austria.
The Science of the total environment
|May 22, 2024
概括
技术关键元素 (TCE) 和稀土元素 (REY) 在维也纳积累.
科学领域:
- 环境科学 环境科学
- 城市生态城市生态学
- 分析化学 分析化学
背景情况:
- 技术进步增加了技术关键元素 (TCE) 的使用.
- 对TCE的环境监测对于评估人为释放和公共卫生风险至关重要.
- 城市气溶和生态系统是元素分布研究的复杂矩阵.
研究的目的:
- 调查维也纳城市气溶中TCE (Li,Be,V,Ga,Ge,Nb,Sb,Te,Ta,Tl,Bi) 和包括伊 (REY) 在内的稀土元素的分布.
- 评估采样月份,植物物种和仓库层次对元素分布的影响.
- 了解TCE水平与城市灰尘的关联及其对环境健康的影响.
主要方法:
- 来自8种植物和绿色立面的叶样 (n=292) 的分析.
- 来自维恩河的水样 (n=18) 的分析.
- 感应合等离子体双重质谱 (ICP-MS/MS) 用于元素定量.
- 通过叶子洗对表面尘埃贡献的评估.
- 统计分析和深度神经网络建模以评估影响因素.
主要成果:
- 冬季期间观察到TCE (Li,V,Ga,Ge,Tl,Bi) 和REY的度较高,与脱冰和化石燃料使用有关.
- 特定的植物物种 (A. millefolium,S. heufleriana) 分别显示出高水平的Li和Ge.
- 在较低的楼层水平上发现了Be,Sb,Bi和REY的积累增加,这表明它们与地面层尘埃沉积的距离很近.
- 确定了TCE水平和城市尘埃之间的显著关联.
结论:
- 城市气溶中的TCE和REY分布受季节性因素,植物物种和接近地面水平的影响.
- 城市灰尘在这些元素的积累中起着关键作用.
- 调查结果强调了将TCE纳入城市污染监测以评估环境健康风险的重要性.
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