A database for deliquescence and efflorescence relative humidities of compounds with atmospheric relevance  

作　　者：Chao Peng Lanxiadi Chen Mingjin Tang 

机构地区：[1]State Key Laboratory of Organic Geochemisty,Guangdong Kkey Laboratory of Environmental Protection and Resoures Utliatio,and Guangdong-Hong Kong-Macao Joint Laboratory for Envirormental Pllution and Control,Guangzhou Institute of Geochemisty,Chinese Academy of Sciences,Guangzhou 510640,China [2]CAS Center for Excellence in Deep Earth Science,Guangzhou510640,China [3]University of ChineseAcademy of Sciences,Bejing 100049,China

出　　处：《Fundamental Research》2022年第4期578-587,共10页自然科学基础研究（英文版）

基　　金：funded by the National Natural Science Foundation of China(Grants No.42022050 and 92044303);China Postdoctoral Science Foundation(Grant No.2020M682931);Guangdong Foundation for Program of Science and Technology Research(Grants No.2019B121205006 and 2020B1212060053);Guangdong Science and Technology Department(Grant No.2017GC010501),and CAS Pioneer Hundred Talents program.

摘　　要：Deliquescence relative humidity(DRH)and efflorescence relative humidity(ERH),the two parameters that regulate phase state and hygroscopicity of substances,play important roles in atmospheric science and many other fields.A large number of experimental studies have measured the DRH and ERH values of compounds with atmospheric relevance,but these values have not yet been summarized in a comprehensive manner.In this work,we develop for the first-of-its-kind a comprehensive database which compiles the DRH and ERH values of 110 compounds(68 inorganics and 42 organics)measured in previous studies,provide the preferred DRH and ERH values at 298 K for these compounds,and discuss the effects of a few key factors(e.g,emperature and partile size)on the measured DRH and ERH values.In addition,we outline future work that will broaden the scope of this database and enhance its accessibility.

关 键 词：DELIQUESCENCE Eforescence Relative humidity HYGROSCOPICITY Temperature dependence 

分 类 号：X51[环境科学与工程—环境工程]