Does molecular HNO3 adsorb onto sulfuric acid droplet surfaces?

被引：23

作者：

Donaldson, DJ

Anderson, D

机构：

[1] Univ Toronto, Scarborough Coll, Toronto, ON M5S 1A1, Canada

[2] Univ Toronto, Dept Chem, Toronto, ON M5S 1A1, Canada

来源：

GEOPHYSICAL RESEARCH LETTERS | 1999年 / 26卷 / 24期

关键词：

D O I：

10.1029/1999GL010894

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Room temperature surface tension measurements on the ternary system: nitric acid - sulfuric acid - water are reported. There is a dramatic decrease in the surface tension of sulfuric acid - water solutions as nitric acid is added. This decrease is most pronounced in the stratospherically-relevant range of sulfuric acid concentrations, between 50 and 75 wt% sulfuric acid. The surface tension decrease indicates a change in surface energy and surface composition and / or structure associated with partitioning of molecular HNO3 to the surface. The presence of HNO3 at the surface may be related to the reported changes in heterogeneous reactivity of sulfuric acid solutions when exposed to nitric acid.

引用

页码：3625 / 3628

页数：4

共 28 条

[1] HETEROGENEOUS INTERACTIONS OF CLONO2 AND HCL ON NITRIC-ACID TRIHYDRATE AT 202-K [J].