| DONG Aiguo,ZHAI Shikui,Matthias Zabel,YU Zenghui,ZHANG Huaijing,LIU Feifei. 2012. Heavy metals in Changjiang estuarine and offshore sediments: responding to human activities. Acta Oceanologica Sinica, (2):88－101 |
| Heavy metals in Changjiang estuarine and offshore sediments: responding to human activities |
| Heavy metals in Changjiang estuarine and offshore sediments: responding to human activities |
| Received:March 16, 2011 Revised:June 03, 2011 |
| DOI：10.1007/s13131-012-0195-y |
| Key words:sediment heavy metal fraction Changjiang (Yangtze) River |
| 中文关键词: sediment heavy metal fraction Changjiang (Yangtze) River |
| 基金项目:The National Natural Science Foundation of China under contract No. 41076022; the National Basic Research Program of China under contract No. 2002CB412400. |
| Author Name | Affiliation | E-mail | | DONG Aiguo | College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China | | | ZHAI Shikui | College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China | zhai2000@ouc.edu.cn | | Matthias Zabel | Fachbereich Geowissenschaften, Universitä
t Bremen, Postfach 330440, D-28334 Bremen, Germany | | | YU Zenghui | College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China | | | ZHANG Huaijing | College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China | | | LIU Feifei | College of Marine Geoscience, Ocean University of China, Qingdao 266100, China | |
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| Abstract: |
| The Changjiang (Yangtze) estuarine and offshore sediments were analyzed for total heavy metals concentrations and chemical fractions. Distributions of heavy metals show typical banded diffusion pattern, with high concentrations near the river mouth and following a decreasing trend in the offshore direction. According to chemical fractions, Fe/Mn oxide fraction is the major non-residual fraction in the Changjiang estuarine and offshore sediments. Higher percentage of non-residual fraction of Pb implies that, the industrial contaminations transported via the atmosphere and river input, may affect the non-residual fraction of heavy metals. Over past fifteen years, the concentration of Pb normalizing to Al presents significant increasing trend, corresponding to the effect of human activities. By comparison of heavy metals fractions in 2003 to 2006, it has been realized that increasing water and sediment may cause a higher percentage non-residual fraction of Cu in the southern part of offshore muddy sediments. |
| 中文摘要: |
| The Changjiang (Yangtze) estuarine and offshore sediments were analyzed for total heavy metals concentrations and chemical fractions. Distributions of heavy metals show typical banded diffusion pattern, with high concentrations near the river mouth and following a decreasing trend in the offshore direction. According to chemical fractions, Fe/Mn oxide fraction is the major non-residual fraction in the Changjiang estuarine and offshore sediments. Higher percentage of non-residual fraction of Pb implies that, the industrial contaminations transported via the atmosphere and river input, may affect the non-residual fraction of heavy metals. Over past fifteen years, the concentration of Pb normalizing to Al presents significant increasing trend, corresponding to the effect of human activities. By comparison of heavy metals fractions in 2003 to 2006, it has been realized that increasing water and sediment may cause a higher percentage non-residual fraction of Cu in the southern part of offshore muddy sediments. |
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