| RELEASE OF HEAVY METALS FROM HARBOUR'S SEDIMENT TO SEAWATER: A LABORATORY STUDY |
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| 作者姓名： | 李锦霞 W. K. JOHNSONAND C. S. WONG |
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| 作者单位： | Third Institute of Oceanography, State Oceanic Administration, Xiamen;Ocean Chemistry Division, Institute of Ocean Sciences, P. O. Box 6000, Sidney, B. C., Canada;Ocean Chemistry Division, Institute of Ocean Sciences, P. O. Box 6000, Sidney, B. C., Canada |
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| 摘 要： | The release and removal behaviour of Cd, Cu, Co, Ni, Pb and Zn from the sediment of Xiamen Harbour to sea water have been studied under ultra-clean laboratory condition within 168 b. Initial rapid increases in dissolved Cu, Pb, Zn and Co were observed in the first six hours and twelve hours respectively after addition of various amounts of sediment. Then Pb and Co decreased to background values, while Zn decreased to less than the background value and Cu remained unchanged. Cd and Ni did not increase during the experiment. The results indicated that the weakly bound heavy metals were released from the sediment through desorption or exchange. Simultaneously, they might form complexes or be adsorbed in colloids or particles. The two processes existed simultaneously, changing with time and conditions.
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| 收稿时间： | 1986/5/28 0:00:00 |
| 修稿时间： | 1/6/1987 12:00:00 AM |
RELEASE OF HEAVY METALS FROM HARBOUR'S SEDIMENT TO SEAWATER: A LABORATORY STUDY |
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| LI JlNXIA,W. K. JOHNSONAND and C. S. WONG.RELEASE OF HEAVY METALS FROM HARBOUR''S SEDIMENT TO SEAWATER: A LABORATORY STUDY[J].Acta Oceanologica Sinica,1987,6(3):373-379. |
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| Authors: | LI JlNXIA W K JOHNSONAND and C S WONG |
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| Institution: | 1.Third Institute of Oceanography, State Oceanic Administration, Xiamen2.Ocean Chemistry Division, Institute of Ocean Sciences, P. O. Box 6000, Sidney, B. C., Canada |
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| Abstract: | The release and removal behaviour of Cd, Cu, Co, Ni, Pb and Zn from the sediment of Xiamen Harbour to sea water have been studied under ultra-clean laboratory condition within 168 b. Initial rapid increases in dissolved Cu, Pb, Zn and Co were observed in the first six hours and twelve hours respectively after addition of various amounts of sediment. Then Pb and Co decreased to background values, while Zn decreased to less than the background value and Cu remained unchanged. Cd and Ni did not increase during the experiment. The results indicated that the weakly bound heavy metals were released from the sediment through desorption or exchange. Simultaneously, they might form complexes or be adsorbed in colloids or particles. The two processes existed simultaneously, changing with time and conditions. |
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