Chemical characteristics of dissolved mercury in the pore water of Minamata Bay sediments
| Autor: | Shinichiro Yano, Akito Matsuyama, Hirokatsu Akagi, Akihide Tada, Ikuko Sonoda, Takaaki Taninaka, Michiaki Kindaichi |
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| Rok vydání: | 2017 |
| Předmět: |
Geologic Sediments
010504 meteorology & atmospheric sciences Oceans and Seas chemistry.chemical_element 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences chemistry.chemical_compound Pore water pressure Japan Seawater Methylmercury 0105 earth and related environmental sciences Hydrology Sediment Mercury Methylmercury Compounds Pollution Mercury (element) chemistry Bays Solubility Environmental chemistry Bay Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine pollution bulletin. 129(2) |
| ISSN: | 1879-3363 |
| Popis: | Methylmercury concentrations in fish from the historically polluted Minamata Bay remain higher than in fish from other coastal seas around Japan. To obtain a better understanding of this phenomenon, the chemical characteristics of pore water from Minamata Bay sediments were investigated. Samples were taken from two stations over a 1-year period. Total average values in the pore water at the two stations for dissolved total mercury and methylmercury concentrations were 6.64±4.93 and 2.69±2.07ng/l, respectively. The pore water was centrifuged at 1000rpm to 3000rpm. The highest ratio of dissolved methylmercury to dissolved total mercury exceeded 60% for pore water centrifuged at 3000rpm. Furthermore, because total average values of Log Kd of total mercury and methylmercury in sediment (St1 and St2) were 5.42 and 2.32 (Lkg-1), methylmercury in Minamata Bay sediment is more eluted than other mercury species. |
| Databáze: | OpenAIRE |
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