Li Fabing, Li Zhanlong, Wang Shenghan, Li Shuo, Men Zhiwei, Ouyang Shunli, Sun Chenglin
Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China.
Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science & Technology, Baotou 014010, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2017 Aug 5;183:425-430. doi: 10.1016/j.saa.2017.04.067. Epub 2017 Apr 26.
The Raman spectra of different concentrations of NaOH solutions have been successfully obtained at normal pressure by cooling. The results indicate that the icing point and the ice phase transition temperature of NaOH solutions decrease with increasing concentrations. Particularly, the different concentrations (2, 4, 6 or 8 and 12M) take place the liquid- III- Ih, liquid- V- Ih, liquid- VI- XV and liquid- IX- VI phase transition, respectively. In addition, the three peaks of around 3524, 3580 and 3624cm appear spectra of the NaOH solutions at low temperature.
通过冷却在常压下成功获得了不同浓度氢氧化钠溶液的拉曼光谱。结果表明，氢氧化钠溶液的冰点和冰相转变温度随浓度增加而降低。特别地，不同浓度（2M、4M、6M、8M和12M）的溶液分别发生液-III-Ih、液-V-Ih、液-VI-XV和液-IX-VI相转变。此外，在低温下，氢氧化钠溶液的光谱中出现了约3524、3580和3624cm处的三个峰。
