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[水 - 气相互作用的核磁共振研究]

[NMR studies of water-gas interactions].

作者信息

Kutyshenko V P, Vorob'ev S I

出版信息

Biofizika. 2013 Jul-Aug;58(4):573-81.

Abstract

The analysis of reported data concerning the solubility of different gases in water depending on a temperature was carried out. These dependences could be described by mono- or biexponential function. Solubilities of nitrogen and oxygen are additive and depend on their percentage in the atmosphere above the fluid. The temperature dependence of oxygen and nitrogen dissolved in water corresponds to that in the atmospheric air. The measurements of water spin-lattice relaxation times changing upon the concentration of dissolved paramagnetic oxygen showed that the oxygen could be significantly but not completely eliminated by saturation with any gases. The best method is the contact with a water immiscible liquid with higher gas capacity than water. However, it results in unstable state of a gas-water system converging to equilibrium.

摘要

对所报道的关于不同气体在水中的溶解度随温度变化的数据进行了分析。这些依赖关系可用单指数或双指数函数来描述。氮气和氧气的溶解度具有加和性,且取决于它们在流体上方大气中的百分比。溶解在水中的氧气和氮气的温度依赖性与大气中的情况相对应。对随着溶解的顺磁性氧气浓度变化而改变的水自旋 - 晶格弛豫时间的测量表明,通过用任何气体饱和,氧气可以显著但不能完全去除。最佳方法是与气体容量比水高的与水不混溶的液体接触。然而,这会导致气 - 水系统的不稳定状态,最终趋向平衡。

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