离子对液态水中的键结构的影响微不足道
Anne Willem Omta1, Michel F Kropman, Sander Woutersen
1Stichting Fundamenteel Onderzoek der Materie (FOM)-Institute for Atomic and Molecular Physics (AMOLF), Kruislaan 407, 1098 SJ Amsterdam, The Netherlands. omta@amolf.nl
概括
离子不会改变水的键网络. 光谱分析显示,离子存在只会影响即时溶解内的水分子,使散装网络完好无损.
科学领域:
- 物理化学 物理化学
- 解决方案化学 解决方案化学
- 频谱学是一种光谱学.
背景情况:
- 水的大量性质,如粘度,表明离子影响其结网.
- 了解离子-水相互作用对于各种化学和生物过程至关重要.
研究的目的:
- 为了研究离子对液态水的键网络的影响.
- 测量离子溶液中水分子的方向相关时间.
主要方法:
- 采用了五秒探针光谱法.
- 对甲 (Mg(ClO4) 2),甲 (NaClO4) 和硫酸 (Na2SO4) 溶液进行了测量.
主要成果:
- 水分子的旋转动力学在离子的第一个溶解外不受影响.
- 在散装溶液中没有观察到对水分子动态的显著影响.
结论:
- 液态水的键网络不会被研究的离子的存在增强或破坏.
- 离子特异效应似乎局部存在于直接的溶解中.
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