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A fishy odor episode in a north China reservoir: Occurrence, origin, and possible odor causing compounds
- Source :
- Journal of Environmental Sciences. 25:2361-2366
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- A significant outbreak of fishy odor occurred in a reservoir located in Inner Mongolia, China, in the winter of 2011, and the odor rating, algal density and concentrations of some potential odorous compounds were monitored over a period of two months. The peak odor rating of the fishy odor was 7 according to flavor profile analysis. Among the dominant algal species (two diatom and one chrysophyte species) observed during the survey, the chrysophyte Dinobryon sp. was the most abundant species, with the peak density recorded at 88,520 cells/mL. Seven potential algal metabolites including heptanal, 2,4-heptadienal, 2,4-decadienal, nonanal, 2-octenal, 2,6-nonadienal and hexanal were detected. The principal component analysis result showed that n-hexanal, n-heptanal and 2,4-decadienal, possibly the metabolites of diatoms, and 2,4-heptadienal, possibly the metabolite of Dinobryon sp., might have contributed to the fishy odor episode. This study demonstrated that the fishy odor episode in this reservoir might be caused by the abnormal growth of chrysophytes and diatoms under the ice-cover.
- Subjects :
- China
Environmental Engineering
Nonanal
North china
Zoology
Hexanal
chemistry.chemical_compound
Fishy odor
Dinobryon
Animals
Environmental Chemistry
Chrysophyta
Flavor
General Environmental Science
Diatoms
biology
Ecology
fungi
Fishes
General Medicine
biology.organism_classification
Diatom
chemistry
Odor
Odorants
Water Microbiology
Subjects
Details
- ISSN :
- 10010742
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Journal of Environmental Sciences
- Accession number :
- edsair.doi.dedup.....1b45f5ef6721f479a8f6743160829670
- Full Text :
- https://doi.org/10.1016/s1001-0742(12)60317-9