摘要
利用Tessier分级提取法依次提取了上海白龙港排污口附近潮滩沉积物中几种重金属元素的化学形态 ,结果表明 :Cu、Pb、Fe、Zn、Cr在沉积物中均以残渣态为主 ,Mn以碳酸盐结合态为主 ,占到总量的 5 0 %左右 ;秋季碳酸盐结合态重金属向铁锰氧化物结合态发生形态迁移与转化 ,在低潮滩沉积物中 ,碳酸盐结合态重金属发生分解以后 ,一部分向上覆水发生了迁移和扩散 ;Cu、Pb、Fe、Mn重金属元素之间具有良好的相关性 ,Zn、Cr在沉积物中也表现出相似的化学行为。
The five chemical species of heavy metals were extracted continuously using Tessier extracting method. Results show that Cu,Pb,Fe,Zn,Cr in sediments were mainly in residual fraction, while the major species of Mn was carbonates. Carbonate heavy metals were converted into Fe Mn oxides in autumn. And in low tidal flat, after carbonates changed into ionic heavy metals, some of the elements moved to the overlying water. Cu,Pb,Fe and Mn have good correlations each other, and Zn,Cr also show their similarity of chemical behavior in sediments.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2002年第4期1-5,共5页
Marine Environmental Science
基金
国家自然科学基金重点项目 (40 1310 2 0 )
国家自然科学基金 (498730 30 )
上海市青年科技启明星计划(97QA14 0 2 3)
跟踪计划 (0 1QMH14 0 6 )
上海市教育发展基金会曙光计划资助项目
关键词
上海
白龙港
排污口
潮滩沉积物
重金属
化学形态
Bailonggang
tidal flat
heavy metals
chemical species
chemical behavior
