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Incorporation of stratospheric acids into water ice
Author(s) -
Elliott Scott,
Turco Richard P.,
Toon Owen B.,
Hamill Patrick
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i004p00425
Subject(s) - impurity , stratosphere , hydrochloric acid , hydrofluoric acid , water vapor , absorption (acoustics) , polar , microstructure , mole fraction , materials science , chemical physics , mineralogy , chemistry , atmospheric sciences , geology , inorganic chemistry , crystallography , organic chemistry , physics , astronomy , composite material
Hydrochloric and hydrofluoric acids are absorbed within the water ice lattice at mole fractions maximizing below 10 −5 and 10 −4 in a variety of solid impurity studies. The absorption mechanism may be substitutional or interstitial, leading in either case to a weak permeation of stratospheric ices by the acids at equilibrium. Impurities could also inhabit grain boundaries, and the acid content of atmospheric ice crystals will then depend on details of their surface and internal microstructures. Limited evidence indicates similar properties for the absorption of HNO 3 . Water ice lattices saturated with acid cannot be a significant local reservoir for HCl in the polar stratosphere.