Xinming Zhuang, Shenyu Li, Fei Li, Junsheng Yuan. Excess Raman Spectroscopy of Ammonium Sulfate Aqueous Solution[J]. Acta Optica Sinica, 2018, 38(6): 0630002
- Acta Optica Sinica
- Vol. 38, Issue 6, 0630002 (2018)
Fig. 1. (a) Raman spectra and (b) excess Raman spectra in O-H stretching vibration interval of (NH4)2SO4 aqueous solution with different mass fractions
Fig. 2. Peak splitting data in O-H stretching vibration interval of (NH4)2SO4 aqueous solution with mass fractions of (a) 8.00% and (b) 12.00%
Fig. 3. Hydrogen bond structures in aqueous solution. (a) DDAA type; (b) DDA type; (c) DAA type; (d) DA type
Fig. 4. Hydrogen bond structures in (NH4)2SO4 aqueous solution with different mass fractions
Fig. 5. Integral area of positive peak of excess Raman spectra in O-H stretching vibration interval of (NH4)2SO4 aqueous solution versus mass fraction
Fig. 6. (a) Characteristic peak spectra and (b) normalized data of SO42- in (NH4)2SO4 aqueous solution with different mass fractions
Fig. 7. Excess Raman spectra of SO42- holosymmetric stretching vibration interval in (NH4)2SO4 aqueous solution with different mass fractions
Fig. 8. Variations of (a) positive peak integral area and (b) negative integral area of SO42- excess Raman spectra with mass fraction
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Table 1. Mass fraction and mole ratio of (NH4)2SO4 aqueous solution
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