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Assessment of reduced sulfur compounds in ambient air as malodor components in an urban area

Title
Assessment of reduced sulfur compounds in ambient air as malodor components in an urban area
Author
김기현
Keywords
Reduced sulfur compounds; Ambient; Odorant monitoring; H(2)S; CH(3)SH
Issue Date
2011-06
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Atmospheric Environment, 2011, 45(20), p.3381-3390
Abstract
Long-term monitoring of reduced sulfur compounds (RSCs: hydrogen sulfide (H(2)S), methanethiol (CH(3)SH), dimethyl sulfide (DMS), and dimethyl disulfide (DMDS)) in ambient air was made using an online GC system at an odor monitoring station in the city of Ansan, South Korea (August 2005-December 2007). The results were examined to assess the status of RSC pollution, its relative contribution to malodor, and the controlling factors of its occurrence. H(2)S (mean of 0.27 ppb) was eminent in terms of both magnitude and occurrence frequency, while others were not with mean values of 0.11 (DMDS), 0.10 (DMS), and 0.07 ppb (CH(3)SH). Unlike others, the temporal trends of H(2)S were best represented by the combined effects of its source processes and meteorological conditions. The results of correlation analysis indicate strong correlations between RSCs and water-related parameters (e.g., rainfall, dew point, and relative humidity). The role of RSCs as malodor component appears to be pronounced during nighttime, especially in summer. If the relative contribution of RSCs to malodor is assessed by means of the sum of odor intensity (SOI), its impact is relatively low, with an SOI value of 1.22 (weak odor strength). Consequently, a more deliberate approach may be needed to effectively assess odor occurrence patterns in ambient air. (C) 2011 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S1352231011003220http://hdl.handle.net/20.500.11754/66594
ISSN
1352-2310
DOI
10.1016/j.atmosenv.2011.03.051
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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