Characterizing the Chemical Nature of a Sorbed Amine on Indoor Surfaces Using ATR-FTIR
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.
M. Ongwandee et al., "Characterizing the Chemical Nature of a Sorbed Amine on Indoor Surfaces Using ATR-FTIR," Healthy Buildings 2006 (Conference Proceedings), Lisbon, Portugal, International Society of Indoor Air Quality and Climate, Jun 2006.
Civil, Architectural and Environmental Engineering
Keywords and Phrases
ATR-FTIR; Amines; Intermolecular Interactions
Article - Conference proceedings
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