State of water and its implications for supersaturated structures in Mg(NO_3)_2 aerosols  

作　　者：ZHAO LiJun ZENG QingXuan ZHANG YunHong 

机构地区：[1]The Institute of Chemical Physics, Beijing Institute of Technology, Beijing 100081, China [2]School of Aerospace Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

出　　处：《Chinese Science Bulletin》2009年第2期344-346,共3页

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)

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）.

关 键 词：Mg(NO3)2 硝酸镁 水质 监测 

分 类 号：TU991.21[建筑科学—市政工程]