Ammonium bisulfate water equilibrium and metastability phase diagrams

被引：36

作者：

Imre, DG ^{[1
]}

Xu, J ^{[1
]}

Tang, IN ^{[1
]}

McGraw, R ^{[1
]}

机构：

[1] SUNY, INST TERR & PLANETARY ATMOSPHERES, NEW YORK, NY 11794 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1997年 / 101卷 / 23期

关键词：

D O I：

10.1021/jp9704426

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Though ammonium bisulfate is one of the most common of atmospheric hygroscopic aerosols, knowledge of its interaction with water has, until now, been extremely limited. This paper presents our observations on single isolated ammonium bisulfate aerosol particles, as they interact with water vapor at temperatures ranging from -40 to 30 degrees C. The complete phase diagram in the temperature/composition as well as the pressure/temperature domains has been derived here for the first time, mapping out equilibrium and metastable to stable phase transitions. A new low-temperature crystalline hydrate phase that might have an important role in processes occurring in the upper troposphere has been discovered.

引用

页码：4191 / 4195

页数：5

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