Observations on the Interpretation and Analysis of Sulfuric Acid Hydrate Infrared Spectra

Autor:	Karen L. Nash, Andrew B. Horn, K. Jessica Sully
Rok vydání:	2001
Předmět:	chemistry.chemical_compound Total internal reflection chemistry Molecular vibration Analytical chemistry Infrared spectroscopy Sulfuric acid Sulfate aerosol Partial pressure Physical and Theoretical Chemistry Hydrate Ion speciation
Zdroj:	The Journal of Physical Chemistry A. 105:9422-9426
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp0114541
Popis:	New infrared spectra of pure bulk molecular sulfuric acid and its mono- and tetrahydrates under equilibrium water partial pressure conditions have been obtained using an internal reflection geometry. For each of the species present (H2SO4, HSO4- and SO42-), a well-defined set of core SO4 vibrations has been identified and assigned to individual vibrational modes. Using these data, earlier literature data has been reexamined. Existing methods for the quantification of composition and ion speciation in H2SO4/H2O mixtures are examined and the need for a more sophisticated method for the determination of sulfate aerosol composition is proposed.
Databáze:	OpenAIRE
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