2013 Fiscal Year Final Research Report
Elucidation of transboundary pollution of micro-pollutants from the mainland China to the sea around Japan via ocean currents
| Project/Area Number |
23404002
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 海外学術 |
|---|
| Research Field |
Risk sciences of radiation/Chemicals
|
|---|
| Research Institution | The University of Kitakyushu |
|---|
Principal Investigator |
KADOKAMI Kiwao 北九州市立大学, 国際環境工学部, 教授 (60433398)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YANAGI Tetsuo 九州大学, 応用力学研究所, 教授 (70036490)
TAKAO Yuji 長崎大学, 大学院・水産環境科学総合研究科, 教授 (20206709)
YASUI Hidenari 北九州市立大学, 国際環境工学部, 教授 (70515329)
|
|---|
| Project Period (FY) |
2011-11-18 – 2014-03-31
|
| Keywords | 微量有害物質 / 中国大陸 / 長江 / 東シナ海 / 海流 / 越境移動 |
|---|
| Research Abstract |
To elucidate transboundary pollution of micro-pollutants from the mainland China to the sea around Japan via ocean current, we surveyed river water in the mouth of the Yangtze River twice in the fiscal year of 2012. Newly developed two screening methods and two precise analytical methods were employed for analysis of 1270 substances.
The number of substances detected was 167 and detected concentrations ranged from 0.79 to 7.26 ug/L. Using the river flow rate and the detected concentrations, the volume of them discharged to the East China Sea was calculated at least 4460 tons a year. River water occupies 1/11 of seawater at the point that seems to be most affected with river water from the river. From this dilution ratio, micro-pollutants from the river seemed not to give adverse effects on aquatic organisms in the sea.
|
