珠江口磨刀门水域溶解态Cd、Pb分布的潮流变化特征*

doi:10.11978/j.issn.1009-5470.2015.04.012

Abstract

Abstract:

Tides can cause changes in hydrodynamics and have great influence on the fate of heavy metals in estuary. The distributions of dissolved Cd and Pb in the Modaomen Channel were investigated in September 2011. During neap tide, Cd concentration increased from river end member to sea end member; Cd stratification was also found. The fate of Cd was subjected to dilution by sea water of low Cd concentration during spring tide. There were large differences of sectional distribution characteristics between Cd and Pb. The sectional distribution of Pb was complicated. During the neap tide anchor survey, Cd stratification was obvious. During the spring tide anchor survey when strong salt-water intrusion occurred, the fates of Cd and Pb were mainly decided by physical dilution of sea water.

Key words: Cd, Pb, tide, Modaomen Channel

SHI Rong-gui, LONG Ai-min, WU Ling-ling, LAN Sheng-ying. Tidal variation in the distributions of dissolved Cd and Pb in the Modaomen Channel of the Pearl River Estuary[J].Journal of Tropical Oceanography, 2015, 34(4): 83-89.

References

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Tidal variation in the distributions of dissolved Cd and Pb in the Modaomen Channel of the Pearl River Estuary

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