选择性,快速反应和可再生的金属有机框架用于饮用水中的过量化物水平
Fatmah Mish Ebrahim1, Tu N Nguyen1, Serhii Shyshkanov1,2
1Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Journal of the American Chemical Society
|February 12, 2019
概括
研究人员开发了一种可重复使用的金属有机框架,用于检测水中的化物 (F). 这项创新提供了一种可靠的污染监测方法,对于公共卫生和预防骨化非常重要.
科学领域:
- 材料科学
- 环境科学
- 分析化学
背景情况:
- 饮用水中的化物 (F-) 污染超过1.5ppm,导致严重的健康问题,包括骨化,在25多个国家流行.
- 检测化物污染的现有方法往往昂贵,难以获得或难以重复使用.
- 开发负担得起和可靠的F-水样采集技术对于全球公共卫生至关重要.
研究的目的:
- 开发一种可重复使用的新材料,用于检测水溶液中的离子.
- 将这种材料集成到一个便携式设备中,用于远程采样水.
- 根据已确定的分析方法验证设备的性能.
主要方法:
- 合成了一种基于胺的发光金属有机框架,SION-105,具有受体部位.
- 描述了SION-105与F- 的特定和静电相互作用.
- 采用SION-105的便携式采样装置被制造并用天然地下水样本进行测试.
主要成果:
- 通过特定的结构相互作用,SION-105在水溶液中有效检测F-.
- 这种材料具有很高的可再生性,可使用超过10个循环,性能优于许多现有传感器.
- 这种便携式装置与来自三个国家的地下水中的F-度的离子染色学分析有很好的一致性.
结论:
- SION-105代表了可重复使用的化物传感材料的重大进步.
- 开发的便携式设备为监测不同环境中的F-污染提供了可靠且易于使用的工具.
- 这项技术可以通过广泛且负担得起的水质评估来改善公共卫生.
更多相关视频
相关概念视频
01:09Levels of Organization
140.5K
Biological organization is the classification of biological structures, ranging from atoms at the bottom of the hierarchy to the Earth's biosphere. Each level of the hierarchy represents an increase in complexity that builds upon the previous level.
Molecules Are Composed of Atoms, and Biomolecules Are Assembled from Molecules:
The most basic levels include atoms, molecules, and biomolecules. Atoms, the smallest unit of ordinary matter, are composed of a nucleus and electrons. Molecules...
Molecules Are Composed of Atoms, and Biomolecules Are Assembled from Molecules:
The most basic levels include atoms, molecules, and biomolecules. Atoms, the smallest unit of ordinary matter, are composed of a nucleus and electrons. Molecules...
140.5K
01:25Dose-Response Relationship: Selectivity and Specificity
9.7K
Drugs exert their therapeutic effects by interacting with receptors, enzymes, or ion channels that are present throughout the human body. The strength and duration of the interaction between a drug and its target receptor are characterized by the selectivity and specificity of the drug. Selectivity refers to a drug's strong preference for its intended target over other targets. For instance, isoprenaline, a non-selective β-adrenergic agonist, interacts with both β1- and...
9.7K
03:06Alkali Metals
24.5K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
24.5K
02:32Bonding in Metals
52.4K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
52.4K
01:13Excess Pressure Inside a Drop and a Bubble
3.4K
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
3.4K
02:37Metallic Solids
20.6K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.6K