Characterizing the Chemical Nature of a Sorbed Amine on Indoor Surfaces Using ATR-FTIR

Abstract

Sorptive interactions with indoor surfaces strongly influence indoor exposure to organic pollutants. Thus, we develop a better understanding of intermolecular interactions between an aliphatic amine and indoor surfaces using ATR-FTIR spectroscopy. The measurements are conducted at high relative humidity in the presence of CO2 and NH3, a gaseous acid and base found in indoor air. The spectral features of an amine sorbed on mineral and polyethylene surfaces are indicative of a protonated species. An amine may chemisorb to either dry surface sites or an adsorbed water surface. These contrast with the spectra of an amine sorbed on latex paint under an NH3 stream in which the peaks assigned to protonation are not observed.

Department(s)

Civil, Architectural and Environmental Engineering

Second Department

Chemistry

Keywords and Phrases

ATR-FTIR; Amines; Intermolecular Interactions

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2006 International Society of Indoor Air Quality and Climate, All rights reserved.

Publication Date

01 Jun 2006

Link to Full Text

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