Mercury distribution in seawater of Kagoshima Bay near the active Volcano, Mt. Sakurajima in Japan.
Kagoshima bay has a highly active volcano in its center. In the filtered seawater and suspended matter collected from 200-m deep fumaroles at the bottom of the inner bay, the geometric mean concentrations of total mercury were 7.6 and 65.0 ng/L, respectively. The surface seawater collected at the inner bay had a higher concentration of mercury when compared to that in the bay entrance (average: 1.0 vs. 0.5 ng/L). In July, however, no such difference was observed. The fumaroles seem to contribute to relatively high concentrations of mercury in the inner bay except in summer, when thermal cline is formed.
Ando
Tetsuo
T
Department of Epidemiology and Preventive Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan. ando@m.kufm.kagoshima-u.ac.jp
Yamamoto
Megumi
M
Tomiyasu
Takashi
T
Tsuji
Mayumi
M
Akiba
Suminori
S
D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis; D007564:Japan; D008628:Mercury / Q000032:analysis*; D012623:Seawater / Q000032:analysis*; D018707:Volcanic Eruptions / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D014874:Water Pollutants, Chemical; D008628:Mercury