Origin, characteristics and mass balance of recalcitrant dissolved organic matter in lake environments
| Project/Area Number |
21241008
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute for Environmental Studies |
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Principal Investigator |
IMAI Akio 独立行政法人国立環境研究所, 地域環境研究センター, 室長 (40203286)
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| Co-Investigator(Kenkyū-buntansha) |
KOMATSUO Kazuhir 独立行政法人国立環境研究所, 地域環境研究センター, 主任研究員 (20391104)
KOZU Ayato 独立行政法人国立環境研究所, 地域環境研究センター, 主任研究員 (30514327)
KAWASAKI Nobuyuki 独立行政法人国立環境研究所, 地域環境研究センター, 特別研究員 (00446387)
SATO Takayuki 独立行政法人国立環境研究所, 地域環境研究センター, 特別研究員 (10552086)
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| Co-Investigator(Renkei-kenkyūsha) |
TOMIOKA Noriko 独立行政法人国立環境研究所, 地域環境研究センター, 主任研究員 (40168399)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥33,670,000 (Direct Cost: ¥25,900,000、Indirect Cost: ¥7,770,000)
Fiscal Year 2011: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2010: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2009: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
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| Keywords | 溶存有機物 / 難分解性溶存有機物 / 湖沼 / 間隙水 / 分子サイズ / 化学組成 / 同位体比 / 流動モデル / フミン物質 / 親水性酸 / 底泥間隙水 / 三次元流動モデル |
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| Research Abstract |
Dynamics of recalcitrant dissolved organic matter in Lake Kasumigaura was quantitatively evaluated from 2001 to 2007 through model calculation. River inflow, sediment release, sewage treatment plant effluent, direct rainfall, internal production in water column accounted for 68%, 12%, 2.9%, 0.7% and 18%, respectively. The contribution of sediment release and internal production was substantially increased in 2007 when algal bloom occurred.
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Report
(4 results)
Research Products
(67 results)
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[Journal Article] Fast and precise method for HPLC-size exclusion chromatography with UVA and TOC(NDIR) detection Importance of multiple detectors to evaluate the characteristics of dissolved organic matter in aquatic environments2011
Author(s)
Kawasaki N., Matsushige K., Komatsu K., Kohzu A., Satou T., Nara F. W., Ogishi F., Yahata M., Mikami H., Goto T., Imai A.
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Journal Title
Water Research
Volume: Vol.42
Pages: 6240-6248
Related Report
Peer Reviewed
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[Journal Article] Direct evidence for the alternation of 13C natural abundances during early diagenesis in Lake Kasumigaura2011
Author(s)
A. Kohzu, A. Imai, N. Ohkouchi, T. Fukushima, K. Kamiya, K. Komatsu, N. Tomioka, N. Kawasaki, S. Miura, and T. Satou
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Journal Title
Japan. Geochemistry Geophysics Geosystems
Volume: 12,10
Issue: 10
Pages: 1-14
DOI
Related Report
Peer Reviewed
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