Biodegradation of Dissolved Organic Matter (DOM) Released from Phytoplankton in Lake Biwa
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- YAMADA Etsu
- Center for Environmental Science, Kyoto Institute of Technology Department of Chemistry and Material Technology, Kyoto Institute of Technology
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- OHARA Shinya
- Department of Chemistry and Material Technology, Kyoto Institute of Technology
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- UEHARA Takashi
- Department of Chemistry and Material Technology, Kyoto Institute of Technology
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- HIROTA Takaaki
- Department of Chemistry and Material Technology, Kyoto Institute of Technology
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- HATORI Naoko
- Department of Chemistry and Material Technology, Kyoto Institute of Technology
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- FUSE Yasuro
- Center for Environmental Science, Kyoto Institute of Technology
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- AOKI Shinichi
- Lake Biwa Environmental Research Institute (LBERI)
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Abstract
The biodegradation study of algal dissolved organic matter (DOM) released from Microcystis aeruginosa, Staurastrum dorsidentiferum and Cryptomonas ovata was carried out. The algal DOM released from Microcystis aeruginosa and Staurastrum dorsidentiferum is relatively stable, while a part of the algal DOM released from Cryptomonas ovata may be easily decomposed. Before biodegradation, two fulvic-like fluorescence peaks (A and B) and a protein-like fluorescence peak (C) and another peak with Ex/Em values of 320 – 330/390 nm (peak D) were observed in the algal DOM released from three kinds of phytoplankton. The fulvic-like fluorophores may be refractory regardless of the kinds of phytoplankton, while protein-like fluorophores released from Microcystis aeruginosa and Staurastrum dorsidentiferum may be relatively refractory and those from Cryptomonas ovata may be unstable. Peak D in the surface water of Lake Biwa may be attributed to low-molecular-weight substances produced during cultivation and/or biodegradation of several kinds of phytoplankton. The ratios of the fluorescence intensities (RFI/DOC) of peak A to peak B in algal DOM (< 1.0) were lower than those in soil Dando FA (1.8). On the other hand, no relationships between peak A and peak C were observed for three kinds of phytoplankton.
Journal
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- Analytical Sciences
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Analytical Sciences 28 (7), 675-681, 2012
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390001204259104384
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- NII Article ID
- 10030825835
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- NII Book ID
- AA10500785
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- COI
- 1:STN:280:DC%2BC38jpsF2ltA%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 023813877
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- PubMed
- 22790369
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed