Distributions of four taste and odor compounds in the sediment and overlying water at different ecology environment in Taihu Lake
| Autor: | Xiansheng Liu, Heyong Huang, Xiaoguang Xu, Guoxiang Wang, Jin-e Liu, Ruiming Han |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Multidisciplinary
Ecology Aquatic ecosystem lcsh:R 0208 environmental biotechnology lcsh:Medicine Sediment 02 engineering and technology 010501 environmental sciences 01 natural sciences Article 020801 environmental engineering Beta-ionone Nutrient Odor Eutrophic water Aquatic environment Environmental science lcsh:Q Ecosystem lcsh:Science 0105 earth and related environmental sciences |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-24564-z |
| Popis: | Organic matter-induced black blooms, such as cyanobacterial and vegetation blooms, are a serious ecosystem disasters that have occurred in Taihu Lake. After large-scale outbreaks of blooms in eutrophic water, a large number of cyanobacterial and vegetation residue accumulate in the coastal areas, and rapidly fermented into odorous compounds. In this study, four taste and odor compounds have been analyzed in sediments and overlying water of different ecology environment in Taihu Lake. High concentrations of DMDS (up to 7165.25 ngg−1 dw−1), DMTS (up to 50.93 ngg−1 dw−1), β-cyclocitral (up to 5441.69 ngg−1 dw−1), β-ionone (up to 1669.37 ngg−1 dw−1) were detected in sediments. Also, the spatial distributions of DMDS, DMTS, β-cyclocitral and β-ionone in the sediments were investigated. As the depth of sediment increases, nutrients and odorous compounds are greatly reduced. The results showed that during the degradation of cyanobacterial and vegetation residues, DMDS, DMTS, β-cyclocitral, β-ionone and nutrients are gradually released. In addition, when assessing the source of odorous compounds in overlying water, it should also be considered that it may be released from the sediment. This study shows that odorous compounds are ubiquitous in near-shore zones Taihu Lake, and may take potential hazard to aquatic ecosystems. |
| Databáze: | OpenAIRE |
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