Journal article
Observations and Contributions of Real-Time Indoor Ammonia Concentrations during HOMEChem
Environmental science & technology, v 53(15), pp 8591-8598
06 Aug 2019
PMID: 31283200
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Although ammonia (NH3) is usually found at outdoor concentrations of 1-5 ppb, indoor ammonia concentrations can be much higher. Indoor ammonia is strongly emitted from cleaning products, tobacco smoke, building materials, and humans. Because of ammonia's high reactivity, solubility in water, and tendency to sorb to a variety of surfaces, it is difficult to measure, and thus a comprehensive evaluation of indoor ammonia concentrations remains an understudied topic. During HOMEChem, which was a comprehensive indoor chemistry study occurring in a test house during June 2018, the realtime concentration of ammonia indoors was measured using cavity ringdown spectroscopy. A mean unoccupied background concentration of 32 ppb was observed, with further enhancements of ammonia occurring during cooking, cleaning, and occupancy activities, reaching maximum concentrations during these activities of 130, 1592, and 99 ppb, respectively. Furthermore, ammonia concentrations were strongly influenced by indoor temperatures and heating, ventilation, and air conditioning (HVAC) operation. In the absence of activity-based sources, the HVAC operation was the main modulator of ammonia concentration indoors.
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Details
- Title
- Observations and Contributions of Real-Time Indoor Ammonia Concentrations during HOMEChem
- Creators
- Laura Ampollini - Drexel Univ, Dept Civil Architectural & Environm Engn, Philadelphia, PA 19104 USAErin F. Katz - Drexel Univ, Dept Chem, Philadelphia, PA 19104 USAStephen Bourne - The University of Texas at AustinYilin Tian - Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USAAtila Novoselac - The University of Texas at AustinAllen H. Goldstein - Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USAGregor Lucic - PicarroMichael S. Waring - Drexel UniversityPeter F. DeCarlo - Drexel Univ, Dept Civil Architectural & Environm Engn, Philadelphia, PA 19104 USA
- Publication Details
- Environmental science & technology, v 53(15), pp 8591-8598
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- Drexel University Steinbright G-2017-9944; 2016-7050 / Alfred P. Sloan Foundation Chemistry of Indoor Environments Program; Alfred P. Sloan Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000480370600014
- Scopus ID
- 2-s2.0-85070860648
- Other Identifier
- 991019168885204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences