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| Title: | Influence of ammonia and carbon dioxide on the sorption of a basic organic pollutant to carpet and latex-painted gypsum board |
| Author (s): | Ongwandee, Maneerat Morrison, Glenn |
| Department/Lab Affiliations: | Civil, Architectural & Environmental Engineering Environmental Research Center |
| Keywords: | indoor surfaces organic pollutants sorptive interactions |
| Issue Date: | 2008-06 |
| Publisher: | American Chemical Society ACS |
| Citation: | Ongwandee, Maneerat and Glenn C. Morrison. "Influence of Ammonia and Carbon Dioxide on the Sorption of a Basic Organic Pollutant to Carpet and Latex-Painted Gypsum Board". Environ. Sci. Technol., Volume 42, Issue 15,(June 2008): 5415–5420. |
| Abstract: | Sorptive interactions with indoor surfaces strongly influence indoor exposure to organic pollutants. Adsorption itself may be influenced by indoor levels of common indoor gases such as CO2, NH3, and H2O. We quantified sorption characteristics of trimethylamine (TMA) on carpet and painted wallboard, while challenging the surface with gas-phase CO2, NH3 and H2O. We show that the capacity of the carpet to sorb TMA, doubles when the CO2 mixing ratio is increased from 0 to 1000 ppm CO2 at 90% relative humidity. In contrast, NH3 decreases the surface capacity of both carpet and latex paint. Sorption of TMA to these indoor materials is primarily caused by interactions at one or more interfaces. Dissolution of TMA and aqueous acid−base chemistry appear to also contribute to the overall sorptive capacity of carpet at high relative humidity. The reduction in the distribution coefficient, ke, in the presence of NH3 is explained by competition between TMA and NH3 molecules for sites on the substrates at low-to-medium relative humidity conditions. |
| Type: | Article - Journal text |
| In Title: | Environmental Science & Technology |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: author cannot archive; Post-print: author cannot archive; FULL COPYRIGHT INFORMATION: |
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| title | Influence of ammonia and carbon dioxide on the sorption of a basic organic pollutant to carpet and latex-painted gypsum board |
| contributor.author | Ongwandee, Maneerat |
| contributor.author | Morrison, Glenn |
| contributor.deptlab | Civil, Architectural & Environmental Engineering |
| contributor.deptlab | Environmental Research Center |
| contributor.sponsor | National Science Foundation |
| contributor.sponsor | University of Missouri Research Board |
| subject | indoor surfaces |
| subject | organic pollutants |
| subject | sorptive interactions |
| date.issued | 2008-06 |
| publisher | American Chemical Society ACS |
| identifier.citation | Ongwandee, Maneerat and Glenn C. Morrison. "Influence of Ammonia and Carbon Dioxide on the Sorption of a Basic Organic Pollutant to Carpet and Latex-Painted Gypsum Board". Environ. Sci. Technol., Volume 42, Issue 15,(June 2008): 5415–5420. |
| identifier.pub.URI | |
| description.abstract | Sorptive interactions with indoor surfaces strongly influence indoor exposure to organic pollutants. Adsorption itself may be influenced by indoor levels of common indoor gases such as CO2, NH3, and H2O. We quantified sorption characteristics of trimethylamine (TMA) on carpet and painted wallboard, while challenging the surface with gas-phase CO2, NH3 and H2O. We show that the capacity of the carpet to sorb TMA, doubles when the CO2 mixing ratio is increased from 0 to 1000 ppm CO2 at 90% relative humidity. In contrast, NH3 decreases the surface capacity of both carpet and latex paint. Sorption of TMA to these indoor materials is primarily caused by interactions at one or more interfaces. Dissolution of TMA and aqueous acid−base chemistry appear to also contribute to the overall sorptive capacity of carpet at high relative humidity. The reduction in the distribution coefficient, ke, in the presence of NH3 is explained by competition between TMA and NH3 molecules for sites on the substrates at low-to-medium relative humidity conditions. |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Postprint |
| relation.isPartOf | Environmental Science & Technology |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: author cannot archive; Post-print: author cannot archive; |
| rights.URI | |
| rights.URI | |
| date.available | 2008-11-24T20:24:17Z |
| identifier.persist.URI |