交变电场作用下离子扰动对KMnO<sub>4</sub>水溶液相变过程的影响

孙伟 1; 徐晓斌 2; 张宏 1; 徐传骧 1

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交变电场作用下离子扰动对KMnO₄水溶液相变过程的影响

专题研究 | 更新时间：2025-12-08

- 交变电场作用下离子扰动对KMnO₄水溶液相变过程的影响
- Effects of Ion Disturbing on KMnO₄ Solution Phase Transition in Alternating Electric Fields
- 西安交通大学学报 2007年41卷第10期页码：1233-1236+1241
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2007-01-23. 作者简介;孙伟(1965～),男,博士生;徐传骧(联系人),男,教授,博士生导师. 基金项目: 国家自然科学基金资助项目(50307005)
- DOI：
  中图分类号： Q65
- 网络首发：2007-10-10，
  
  纸质出版：2007
- 稿件说明：
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孙伟 1, 徐晓斌 2, 张宏 1, 等. 交变电场作用下离子扰动对KMnO₄水溶液相变过程的影响[J]. 西安交通大学学报, 2007,41(10):1233-1236+1241.

孙伟 1, 徐晓斌 2, 张宏 1, et al. Effects of Ion Disturbing on KMnO₄ Solution Phase Transition in Alternating Electric Fields[J]. 2007, 41(10): 1233-1236+1241.
孙伟 1, 徐晓斌 2, 张宏 1, 等. 交变电场作用下离子扰动对KMnO₄水溶液相变过程的影响[J]. 西安交通大学学报, 2007,41(10):1233-1236+1241. DOI：

孙伟 1, 徐晓斌 2, 张宏 1, et al. Effects of Ion Disturbing on KMnO₄ Solution Phase Transition in Alternating Electric Fields[J]. 2007, 41(10): 1233-1236+1241. DOI：

摘要

为探索生物材料低温保存的新方法

以质量分数为0.9%的KMnO

溶液为实验样品

将其置于-30 ℃低温环境中冷冻

同时施加交变电场(频率为50 Hz～100 kHz)干扰

通过显微观察研究交变电场对含盐溶液液-固相变过程的影响.研究发现

交变电场作用对溶液中冰晶生长具有明显的抑制作用

形成的纯水冰晶体积明显减小

离子分布趋于均匀

部分区域可能形成微晶冰或含盐冰.分析认为

对于强电解质溶液

交变电场作用下产生的离子扰动是影响含盐水溶液液-固相变过程的主要原因.

Abstract

Ice formation inside or outside cells is revealed as a factor causing cryo-injury to cells/tissues during cryo-preservation. It is confirmed by test that alternating electric fields is able to significantly influence ice formation at a relatively slow cooling rate.(mass fraction)A solution with 0.9% mass fraction of KMnO

as test sample was cooled under alternating fields ranging from 50 Hz to 100 kHz at -30 ℃.The control sample is similarly cooled without electric fields. Simultaneously morphology investigation is carried out

and it is found that alternating fields exert obvious effects to inhibit ice crystal growing. Thus the ion disturbance can be regarded as the major factor to influence ice crystal growing. The bulk of pure ice crystal(without salt ion)is significantly reduced

and salt io

n distribution in whole area tends uniformly. In some regions

microcrystalline ice crystal or ice crystal with salt ion may be formed.

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references

Karow A M, Webb W R. Tissue freezing: a theory for injury and survival[J]. Cryobiology, 1965, 2(3): 99-108.

Mazur P. The role of intracellular freezing in the death of cells cooled at supraoptimal rates[J]. Cryobiology, 1977, 14(3): 251-272.

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Vegiri A, Schevkunov S V. A molecular dynamics study of structural transitions in small water clusters in the presence of an external electric field[J]. J Chem Phys, 2001, 115(5): 4175-4185.

Hanyu Y, Ichikawa M, Matsumoto G. An improved cryo-fixation method: cryo-quenching of small tissue blocks during microwave irradiation [J]. J Microsc, 1992,165(1): 225-235.

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李以圭,陆九芳.电解质溶液理论[M].北京:清华大学出版社,2005.

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交变电场作用下离子扰动对KMnO4水溶液相变过程的影响

Effects of Ion Disturbing on KMnO4 Solution Phase Transition in Alternating Electric Fields

DOI：

摘要

Abstract

关键词

Keywords

references

交变电场作用下离子扰动对KMnO₄水溶液相变过程的影响

Effects of Ion Disturbing on KMnO₄ Solution Phase Transition in Alternating Electric Fields