Spatial and seasonal behaviour of organotin compounds in protected subtropical estuarine ecosystems in Okinawa, Japan
| Autor: | Mohammed Ali Sheikh, Keiko Tsuha, Xiaochun Wang, Kenzaburo Sawano, Sia Taema Imo, Tamotsu Oomori |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
geography
geography.geographical_feature_category Ecology Health Toxicology and Mutagenesis Aquatic ecosystem Ecotoxicological risk Public Health Environmental and Occupational Health Estuarine ecosystems Soil Science Estuary Subtropics Pollution Analytical Chemistry chemistry.chemical_compound chemistry Environmental chemistry Spring (hydrology) Tributyltin Environmental Chemistry Environmental science Waste Management and Disposal Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 87:847-861 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310701415629 |
| Popis: | The spatial and temporal behaviours of the organotin compounds (OTCs) (butyl- and phenyltin) were investigated in the Manko and Okukubi protected estuarine ecosystems on Okinawa Island, Japan from February to October 2006. Butyltin compounds (BTCs) were frequently detected in all seasons, while phenyltin (PhTs) were found in winter and early spring. In Manko estuary, the total mean concentrations of BTCs and PhTs were 22.78 ± 30.85, (mean ± SD, n = 53) and 0.08 ± 0.27 ng(Sn) L−1, respectively. In Okukubi estuary, BTCs and PhTs were 12.58 ± 23.96 and 0.47 ± 1.67 (n = 55) ng(Sn) L−1, respectively. The Manko sediments can be classified as lightly contaminated, while the Okukubi sediments were uncontaminated with tributyltin (TBT). The mean levels of TBT shown in Manko estuary exceeded the threshold level and represent an ecotoxicological risk to sensitive aquatic life. Generally, the present study reports the occurrence and continuous input of OTCs in the protected estuaries, even 16 years after legal restri... |
| Databáze: | OpenAIRE |
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