| HAN Jianbo,WANG Juying,MA Deyi,QUAN Xie. 2005. Relation of asid-volatile sulfide and clay content of sediment to the bioavailability of zinc and cadmium: laboratory plus field experiment. Acta Oceanologica Sinica, (5):61－67 |
| Relation of asid-volatile sulfide and clay content of sediment to the bioavailability of zinc and cadmium: laboratory plus field experiment |
| Relation of asid-volatile sulfide and clay content of sediment to the bioavailability of zinc and cadmium: laboratory plus field experiment |
| Received:May 21, 2005 Revised:July 27, 2005 |
| DOI： |
| Key words:AVS clay bioavailability zinc cadmium |
| 中文关键词: AVS clay bioavailability zinc cadmium |
| 基金项目: |
| Author Name | Affiliation | E-mail | | HAN Jianbo | School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China
National Marine Environmental Monitoring Center, P. O. Box 303, Dalian 116023, China | jbhan@nmemc.gov.cn | | WANG Juying | National Marine Environmental Monitoring Center, P. O. Box 303, Dalian 116023, China | | | MA Deyi | National Marine Environmental Monitoring Center, P. O. Box 303, Dalian 116023, China | | | QUAN Xie | School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China | |
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| Abstract: |
| Organic matter and iron and maganese oxides have been considered as the major affecting factors for metals in anoxic or oxidized sediment.In recent research, clay and sulfide are found as major factors in oxic or oxidized sediments that might affect bioavailability of metals.To test this hypothesis, the influence of sulfide, measured as acid-volatile sulfide (AVS), and clay content on the bioavailability of zinc and cadmium in sediments was examined.Laboratory simulative experiment and field verification experiment were conducted, showing that the bioavailability of zinc and cadmium is strongly correlated to AVS and clay content in sediments.Taking into account both AVS and clay parameters in sediments together can better indicate the bioavailability of zinc and cadmium rather than considering one of them alone. |
| 中文摘要: |
| Organic matter and iron and maganese oxides have been considered as the major affecting factors for metals in anoxic or oxidized sediment.In recent research, clay and sulfide are found as major factors in oxic or oxidized sediments that might affect bioavailability of metals.To test this hypothesis, the influence of sulfide, measured as acid-volatile sulfide (AVS), and clay content on the bioavailability of zinc and cadmium in sediments was examined.Laboratory simulative experiment and field verification experiment were conducted, showing that the bioavailability of zinc and cadmium is strongly correlated to AVS and clay content in sediments.Taking into account both AVS and clay parameters in sediments together can better indicate the bioavailability of zinc and cadmium rather than considering one of them alone. |
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