磁场对NaCl溶液电导率影响的实验研究

Experimental reasearch on effects of magnetic fields on the conductivity of NaCl solutions

实验研究了磁场对NaCl溶液电导率的影响。将NaCl溶液置于磁场中作用1h,测试磁场作用前后NaCl溶液电导率的变化。研究了不同磁场幅值作用时NaCl溶液电导率的变化规律,比较了恒定磁场和交变磁场作用下NaCl溶液电导率的变化情况,对比了不同浓度的NaCl溶液在同一磁场作用下电导率的变化趋势。对磁场作用下NaCl溶液电导率变化的机理进行了探讨。研究结果表明,磁场促使水分子的磁矩偏转,使其电子云发生极化,破坏了离子水化层,削弱了电解质溶液的电泳效应,使其电导率升高。

The effects of magnetic fields on the conductivity of NaCI solutions were studied through expriment. NaCI solutions were exposed for 1 h to magnetic fields to measure the change of the conductivity of the NaCI solutions. The change of the conductivity of the NaCI solutions under amplitude-differemt magnetic fields was studied, the change of the conductivity of the NaCI solutions under the sationary magnetic field was compared with that of the solutions under the altemating magnetic field, and the change of the conductivity of the NaCI solutions which are different in concentration and exposed to the same magnetic field was researched. The pricinple of the effects of magentic fields on the conductivity of NaCI solutions was discussed. The study shows that the electron cloud of the water molecules is polarized by the deflection of their magnetic moment eansed by the magnetic field, and the hydreated layer of the ion is broken. On the basis of this, the electrophoretic effect in electrolyte solutions is weakened, so the conductivity of the solution is increased.