A fishy odor episode in a north China reservoir: Occurrence, origin, and possible odor causing compounds

查看全文 作　　者：Yunyun [1]Zhao;Jianwei [1]Yu;Ming [1]Su;Wei [1]An;Min [1]Yang

机构地区：[1]State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences

出　　处：《Journal of Environmental Sciences》索引2013年第25卷第12期,共6页

基　　金：supported by the National Natural Science Foundation of China(No.50938007;21377144);Watershed Eutrophication Management in China through System Oriented Process Modelling of Pressures;Impacts and Abatement Actions(No.GJHZ1203) 摘　　要：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. 关键词：中国北方鱼腥味化合物水库情节起源异味辛烯醛

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A fishy odor episode in a north China reservoir: Occurrence, origin, and possible odor causing compounds

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