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Characterization of major offensive odorants released from lake sediment

Title
Characterization of major offensive odorants released from lake sediment
Author
김기현
Keywords
VOCs; RSCs; Aldehydes; Ammonia; Acids; Malodor
Issue Date
2011-02
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ATMOSPHERIC ENVIRONMENT, v. 45, Page. 1236-1241
Abstract
The amount of odorants effused from Lake Sihwa during the low tide period was estimated using sediment samples collected from various sites. A wide variety of odorants released from lake sediment were measured such as reduced sulfur compounds (RSCs), aldehydes, nitrogenous compounds, volatile organic compounds (VOCs), and volatile fatty acids (VFAs). A comparison of emission rates (mu g m(-2) min(-1)) showed large mean values from such species as NH(3) (14,550), toluene (370), and DMS (106), while the lowest values were seen from VFAs and some VOCs. If their emission concentrations are converted into odor intensity (OI). the OI values were dominated by such odorants as NH(3) (2.07), H(2)S (1.65), DMS (1.80), acetaldehyde (1.52), butyric acid (1.59), butyraldehyde (1.28), isovaleric acid (1.15), and valeric acid (0.78). The dilution to threshold (D/T) ratio derived on the basis of the air dilution sensory (ADS) test yielded a mean of 62 (range: 10-173); 19 out of 21 samples were seen to exceed the guideline D/T value of 15. The sum of odor intensities derived from individual odorants exhibited strong compatibilities with the D/T ratio (r(2) = 0.87; alpha = 0.003). The overall results of this study confirm that the sediment can play an important role in the malodor phenomenon in the area surrounding the Lake Sihwa.
URI
https://www.sciencedirect.com/science/article/pii/S1352231010010356?via%3Dihubhttp://hdl.handle.net/20.500.11754/35041
ISSN
1352-2310
DOI
10.1016/j.atmosenv.2010.12.010
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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