%0 Journal Article
%T In situ DRIFTS study of hygroscopic behavior of mineral aerosol<br>
%A Qingxin M
%A Hong He
%A Yongchun Liu
%A <br>
%J 环境科学学报(英文版)
%D 2010
%I 
%X In situ diffusion reflectance infrared Fourier transform spectroscopy was used to study the water adsorption on mineral oxides (SiO_2, α-Al_2O_3, MgO, Fe_2O_3, TiO_2). The results showed that all the water adsorption isotherms were well fitted with the Brunauer-Emmett-Teller (BET)- Ⅲ type equation, with the calculated monolayers occurring at 24%-30% relative humidity. It showed that about 1-5 layers of water adsorbed on oxides surfaces in ambient relative humidity (20%-90%). The measured deliquescence relative humidity of NaCl was (74±1)%, which demonstrated that DRIFTS is a useful method for the study the hygroscopic behavior of mineral dust. In addition, the limits of DRIFTS were also discussed.
%K DRIFTS
%K mineral oxides
%K water adsorption
%K hygroscopicity<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=7231C00197CA946649AB0858DA515C58&yid=140ECF96957D60B2&vid=BC12EA701C895178&iid=E158A972A605785F&sid=AF4A4411BB448A36&eid=A3F93694B058F76C&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=2&reference_num=20