超声波振荡对纯水和某些液体的pH值的影响
首发时间:2010-02-03
摘要:文章研究了超声振荡对纯水和某些液体的pH值的影响,研究结果表明超声波振荡对纯水的pH值有降低作用,但振荡后的水静置24-72h,pH值恢复到原值,并且这种静置水再次振荡后pH值不会发生变化。在连续通入Ar2、N2和O2气体的水中进行超声振荡,其水的pH值基本不发生变化。另外,在纯净水中连续通入CO2,同时对溶液进行振荡,发现经振荡的液体比不振荡的液体的pH值要降低多一些。文章对超声振荡改变pH值的机理进行了初步探索。
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The effects of ultrasonic vibration on pH value of pure water and some liquids
Abstract:The effects of ultrasonic vibration on pH value of pure water and some water solutions were investigated. The research results showed that pH value of pure water appeared to have an obviously decline trend in 2 to 30 minutes after applying ultrasonic vibration. Then, it would restore to the primary pH value by letting 24 to 72 hours on the room temperature (RT). However, it is interesting that this treated pure water (after applying ultrasonic vibration and letting for some times) became stable and it was observed without obviously pH value change after re-applying ultrasonic vibration. In addition, it found that the effect of ultrasonic vibration on the water which was immersed Ar2, N2 and O2 gas is not obvious, showing considerably stable. However, when CO2 was immersed and shaking, it found that the decrease tendency of pH value of solution is greater than only CO2 was immersed into the solution and letting. Finally, the mechanism of the effect of ultrasonic vibration on PH value of water was discussed.
Keywords: ultrasonic vibration pH value pure water sonochemistry effect
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No.3986314757812651****
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