Abstract
Abstract. Many atmospheric chemicals occur in the gas phase as well as in liquid cloud droplets and aerosol particles. Therefore, it is necessary to understand the distribution between the phases. According to Henry's law, the equilibrium ratio between the abundances in the gas phase and in the aqueous phase is constant for a dilute solution. Henry's law constants of trace gases of potential importance in environmental chemistry have been collected and converted into a uniform format. The compilation contains 17 350 values of Henry's law constants for 4632 species, collected from 689 references. It is also available at http://www.henrys-law.org.
Highlights
Henry’s law is named after the English chemist William Henry, who studied the solubility of gases in the early 19th century
Many atmospheric chemicals occur in the gas phase as well as in liquid cloud droplets and aerosol particles
According to Henry’s law, the equilibrium ratio between the abundances in the gas phase and in the aqueous phase is constant for a dilute solution
Summary
Henry’s law is named after the English chemist William Henry, who studied the solubility of gases in the early 19th century. In his publication about the quantity of gases absorbed by water (Henry, 1803), he described the results of his experiments:. . ] water takes up, of gas condensed by one, two, or more additional atmospheres, a quantity which, ordinarily compressed, would be equal to twice, thrice, &c. The volume absorbed under the common pressure of the atmosphere. The proportionality factor is called the Henry’s law constant. In atmospheric chemistry, these constants are needed to describe the distribution of trace species between the air and liquid cloud droplets or aerosol particles. 3, the compilation of Henry’s law constants is described in detail. Additional information can be found in the Supplement, which is described in Sect.
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