Treatment of Bottom Sediment containing Mercury and Monitoring Method Using Fishes,
Abstract
In Minamata Bay, sediment containing mercury higher than 25 ppm has accumulated on the bottom, and dredging work continues. The dredging has been conducted carefully, and secondary pollution as a result of disturbance of the bottom sediment has been prevented. The mercury concentration in fishes was investigated to determine 'the conditions before dredging. As a result, a good correlation between the mercury concentration in fishes and the body length was found. Six kinds of fishes were chosen for monitoring. These were selected because they were present in sufficient numbers, the mercury concentration in them was adequate, and there was good correlation between mercury concentration and body length. The monitoring work has been successful, based on the results obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1992
- Accession Number
- ADP006827
Entities
People
- K. Kyuma
- M. Fujiki
- R. Hirota
- Y. Nakayama
Organizations
- Kumamoto University