| 丁二酸钠气溶胶液滴吸湿性的分子谱学研究 |
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| 引用本文： | 王枫,张丽娜.丁二酸钠气溶胶液滴吸湿性的分子谱学研究[J].高等学校化学学报,2010,31(10):2042-2045. |
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| 作者姓名： | 王枫 张丽娜 |
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| 作者单位： | 河南理工大学物理化学学院化学系, 焦作 454000 |
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| 基金项目： | 国家自然科学基金(批准号:20903036)资助 |
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| 摘 要： | 采用共聚焦拉曼光谱和傅里叶变换红外-衰减全反射(FTIR-ATR)技术, 研究了丁二酸钠气溶胶液滴的风化和潮解过程. 研究发现, 随着水质摩尔比的降低, 1420 cm-1处νs(COO-)的半峰宽由35 cm-1增加至42 cm-1, 表明过饱和丁二酸钠液滴内部Na+与丁二酸根存在弱相互作用; 过饱和丁二酸钠液滴风化形成亚稳态无水晶体, 而不是形成热力学更稳定的六水合晶体.
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| 关 键 词： | 丁二酸钠 吸湿性 共聚焦拉曼 傅里叶变换红外-衰减全反射 |
| 收稿时间： | 2010-04-16 |
Molecular Spectral Investigations on the Hygroscopicity of Aerosols of Sodium Succinate |
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| WANG Feng,ZHANG Li-Na.Molecular Spectral Investigations on the Hygroscopicity of Aerosols of Sodium Succinate[J].Chemical Research In Chinese Universities,2010,31(10):2042-2045. |
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| Authors: | WANG Feng ZHANG Li-Na |
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| Institution: | Chemistry Department, School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | The efflorescence and deliquescence processes of sodium succinate aerosol droplets were investigated with combination of confocal Raman spectral and FTIR-ATR techniques. It was concluded that the full width at half maximum(FWHM) of νs(COO-) band of sodium succinate droplet at 1420 cm-1 increased from 35 cm-1 to 42 cm-1 with decreasing the molar ratio of water to solute(WSR), indicating the weak interaction between Na+ and succinate dianions; the sodium succinate droplet crystallized to form metastable anhydrous particles rather than thermodynamically stable hexahydrated ones. |
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| Keywords: | Sodium succinate Hygroscopicity Confocal Raman FTIR-ATR |
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