摘要
One technique based on the difference spectra was developed to study the state of water in supersaturated Mg(NO3)2 aerosols. The technique could be derived from the observation that the Raman scattering and infrared absorbance cross sections of molecular vibrations of interest remain practically constant from diluted solutions to supersaturated aerosols. The spectra of solvated water were obtained and primarily related to the first hydration layers of solute molecules in supersaturated Mg(NO3)2 aerosols. Based on this investigation, a chain structure was proposed to occur in the supersaturated Mg(NO3)2 aerosols at low relative humidities (RHs).
One technique based on the difference spectra was developed to study the state of water in supersaturated Mg（NO3）2 aerosols. The technique could be derived from the observation that the Raman scattering and infrared absorbance cross sections of molecular vibrations of interest remain practically constant from diluted solutions to supersaturated aerosols. The spectra of solvated water were obtained and primarily related to the first hydration layers of solute molecules in supersaturated Mg（NO3）2 aerosols. Based on this investigation, a chain structure was proposed to occur in the supersaturated Mg（NO3）2 aerosols at low relative humidities （RHs）.
基金
Supported by National Natural Science Foundation of China (Grant Nos. 20673010 and 20640420450)
"111" Project (Grant No. B07012)
China Postdoctoral Science Foundation (Grant No. 20070410466)
关键词
Mg(NO3)2
硝酸镁
水质
监测
Mg（NO3）2, state of water, supersaturated aerosols, difference spectra, Raman spectroscopy
