Abstract

Changes occurring in deionized water with time, recorded by dynamic light scattering, have been investigated. It is demonstrated that the mean size of optical inhomogeneities in deionized water, formed under an external mechanical impact, depends on the storage time of water (from its preparation to mechanical impact). Presumably, these optical inhomogeneities can be considered as submicron air bubbles. The recorded changes in sizes occurring in the course of time may be related to the saturation of water with air and increase in its ionic strength. It is also shown that a mechanical impact on water is a complex physical process changing its physicochemical properties and that the consequences of mechanical impact on water are retained for at least a week. The data obtained may be useful for standardizing the deionized water used in experimental studies.

中文翻译：

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去离子水散射特性的时间动态

摘要

已经研究了通过动态光散射记录的去离子水中随时间变化的情况。已经证明，在外部机械冲击下形成的去离子水中光学不均匀性的平均大小取决于水的储存时间（从制备到机械冲击）。可以将这些光学不均匀性视为亚微米气泡。记录的随时间变化的尺寸变化可能与水被空气饱和以及离子强度增加有关。还显示出对水的机械冲击是改变其理化性质的复杂物理过程，并且对水的机械冲击的后果至少保留了一周。