J4

• 环境科学 • 上一篇    

样品陈化对自然水体采集生物膜中重金属形态分布的影响

王 婷1, 王晓丽2, 杜显元2, 刘建林1, 陈界江2, 李 鱼1,2   

  1. 1. 华北电力大学 能源与环境研究中心, 北京 102206; 2. 吉林大学 环境与资源学院, 长春 130012
  • 收稿日期:2007-09-29 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26
  • 通讯作者: 李 鱼

Effects of Sample Aging on Distribution of Heavy Metals in Natural Surface Coatings Collected from Natural Waters

WANG Ting1, WANG Xiaoli2, DU Xianyuan2, LIU Jianlin1, CHEN Jiejiang2, LI Yu1,2   

  1. 1. Energy and Environmental Research Centre, North China Electric Power University, Beijing 102206, China; 2. College of Environment and Resources, Jilin University, Changchun 130012, China
  • Received:2007-09-29 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: LI Yu

摘要: 以松花江采集的生物膜为研究对象, 采用改进的Tessier连续萃取方法分析生物膜样品陈化3个月后金属形态分布规律的变化. 结果表明, 样品陈化使Mn从碳酸盐结合态和铁/锰氧化物结合态向可交换态和残渣态转化, 幅度为11.17%~26.27%; 样品陈化后Fe从有机结合态和残渣态向铁/锰氧化物结合态转化16.89%~24.97%; 原来占总量5445%~5956%的有机结合态Cu在样品陈化后均转化为铁/锰氧化物结合态和残渣态; 而可交换态和有机结合态的Zn在样品陈化后全部转化为其他形态, 其中部分向碳酸盐结合态转化.

关键词: 表层沉积物, 生物膜, 样品陈化, 重金属形态, 生物可利用性

Abstract: Distribution of heavy metals in the natural surface coatings collected from the Songhua River was studied before and after their aging for 3 months. It was indicated that sample aging resulted in 11.17%~2627% manganese to turn from carbonateassociated and Fe/Mnoxides phases to exchangeable and residual phases. After sample aging, some iron associated with organic matters and residues (16.89%~24.97% of iron) transferred to Fe/Mnoxides phases. All copper associated with organic matters transferred to Fe/Mnoxidesand residual phases after aging. Exchangeable and organic mattersassociated zinc transferred to other phases completely because of aging.

Key words: sediments, natural surface coatings, sample aging, partitioning patterns, availability

中图分类号: 

  • X132