Published 2013
| Version v1
Miscellaneous
Study of factors controlling organic pollution in Lake Kiba
- 1. Kanazawa Univ., Low Level Radioactivity Laboratory, Nomi, Ishikawa (Japan)
Description
Lake Kiba is located in Ishikawa Prefecture and has been facing to high COD value, a simple indicator of organic pollution, of lake water. This study analyzed organic matter content in a sediment core with time scale and discussed factors controlling COD value. Sedimentation rate estimated from depth profile of 210Pbex is divided into three periods such as present-1989, 1989-1959 and 1959-past. TOC flux at the present is five times higher than that of 1959. The TOC/TN molar ratio decreased from 15.7 to 12.8. These results suggest that accumulation of total organic matter increases but the contribution of terrestrial organic matter and phytoplankton relatively varies with time. (author)
Additional details
Publishing Information
- Imprint Title
- 5th Asia-Pacific symposium on radiochemistry (APSORC13)
- Imprint Pagination
- 378 p.
- Journal Page Range
- p. 327
Conference
- Title
- 5. Asia-Pacific symposium on radiochemistry
- Acronym
- APSORC13
- Dates
- 22-27 Sep 2013
- Place
- Kanazawa, Ishikawa (Japan)
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 46008584
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- CARBON ISOTOPES; CHEMICAL OXYGEN DEMAND; DEPTH; ISOTOPE RATIO; JAPAN; LAKES; LEAD 210; NITROGEN ISOTOPES; SEDIMENTATION; WATER POLLUTION
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ASIA; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DEVELOPED COUNTRIES; DIMENSIONLESS NUMBERS; DIMENSIONS; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPES; LEAD ISOTOPES; NUCLEI; POLLUTION; RADIOISOTOPES; SURFACE WATERS; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 1 fig.