Heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary

ZHANG Huaijing; ZHAI Shikui; ZHANG Aibin; ZHOU Yonghua; YU Zenghui

doi:10.1007/s13131-015-0675-y

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Article Navigation > Acta Oceanologica Sinica > 2015 > 34(10): 36-45

ZHANG Huaijing, ZHAI Shikui, ZHANG Aibin, ZHOU Yonghua, YU Zenghui. Heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary[J]. Acta Oceanologica Sinica, 2015, 34(10): 36-45. doi: 10.1007/s13131-015-0675-y

Citation:

ZHANG Huaijing, ZHAI Shikui, ZHANG Aibin, ZHOU Yonghua, YU Zenghui. Heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary[J]. Acta Oceanologica Sinica, 2015, 34(10): 36-45. doi: 10.1007/s13131-015-0675-y

Citation:

ZHANG Huaijing, ZHAI Shikui, ZHANG Aibin, ZHOU Yonghua, YU Zenghui. Heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary[J]. Acta Oceanologica Sinica, 2015, 34(10): 36-45. doi: 10.1007/s13131-015-0675-y

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Heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary

doi: 10.1007/s13131-015-0675-y

1.
College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao 266100, China
2.
Qingdao Huanhai Marine Engineering Prospecting Institute, Qingdao 266033, China

Received Date: 2014-06-10
Rev Recd Date: 2015-02-26

Abstract

Abstract

In order to discuss the content distributions and fluxes of heavy metals in suspended matters during a tidal cycle in the turbidity maximum around the Changjiang (Yangtze) Estuary, the contents of heavy metals (Zn, Pb, Cd, Co and Ni) have been analyzed. During a tidal cycle, the average contents of heavy metals are in the order of Zn >Ni >Pb >Co >>Cd. The average contents in ebb tide are generally higher than that in flood tide. However, at the inshore Sta. 11, influenced by the contamination from the nearby waste treatment plant, the average contents of Zn and Ni in flood tide are higher than those in ebb tide and at the offshore Sta. 10, the content of Cd in flood tide higher than that in ebb tide due to marine-derived materials. The five heavy metals, mainly terrigenous, are transported towards east-northeast, and settle down with suspended matters in the area between Sta. 11 and Sta. 10. Influenced by marine-derived materials, the flux value of Cd does not alter significantly with obviously changing in flux direction towards northwest. The source of heavy metals, the salinity of water and the concentration of suspended matters are the main factors controlling the content distributions of heavy metals during a tidal cycle. There is a positive correlation between the contents of heavy metals (Zn, Pb, Co and Ni) and the salinity of water, while the opposite correlation between the contents and the concentrations of suspended matters. Because of marine-derived materials, the content of Cd is not correlated with the concentration of suspended matters and the salinity of water.
- Changjiang (Yangtze) Estuary,
- turbidity maximum zone,
- tidal cycle,
- suspended matters,
- content of heavy metal,
- flux of heavy metal

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References(33)

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