J4 ›› 2010, Vol. 40 ›› Issue (6): 1435-1440.

• 地质工程与环境工程 • 上一篇    下一篇

共存镉/铜对沉积物(生物膜)中主要组分吸附阿特拉津的影响

李鱼1, 2|李娟1|高茜1|王岙2, 3   

  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 130026;
    3.吉林省卫生监测检验中心|长春 130062
  • 收稿日期:2010-04-12 出版日期:2010-11-26 发布日期:2010-11-26
  • 作者简介:李鱼(1965-)|男|吉林长春人|教授|博士|博士生导师|主要从事环境污染与控制化学、环境污染物形态、环境规划与评价研究|Tel:010-51971241,E-mail:liyuxx@jlu.edu.cn
  • 基金资助:

    国家自然科学基金项目(50879025)

Effect of Coexistent Cd-Cu on Atrazine Adsorption onto Main Components in Sediments(Surface Coatings)

LI Yu1, 2, LI Juan1, GAO Qian1, WANG Ao2, 3   

  1. 1.Energy and Environmental Research Center, North China Electric Power University Beijing 102206, China;
    2.College of Environment and Resources, Jilin University, Changchun 130026, China;
    3.Jilin Province Sanitary Inspection and Test Center, Changchun 130062, China
  • Received:2010-04-12 Online:2010-11-26 Published:2010-11-26

摘要:

采用选择性萃取分离技术对沉积物(生物膜)中非残渣态组分(铁、锰氧化物和有机质)进行分离,研究阿特拉津(atrazine,AT)-Cd-Cu系中共存重金属对选择性萃取前后沉积物(生物膜)吸附AT的影响。研究结果表明:共存体系中,沉积物(生物膜)中铁氧化物对AT的吸附贡献最大,其次是有机质,而锰氧化物则抑制AT的吸附;共存镉促进了AT在沉积物(生物膜)原样及各非残渣态组分上的吸附,镉质量浓度为0.2 mg/L时,促进作用最显著,各组分对阿特拉津的吸附贡献增加了3.20%~32.31%(沉积物)和1.61%~17.10%(生物膜),但随镉质量浓度的增加,其促进作用减弱;共存铜抑制沉积物(生物膜)原样及铁氧化物、有机质对AT的吸附,铜质量浓度为75.0 mg/L时,其抑制作用最强,铁氧化物和有机质对阿特拉津的吸附贡献分别降低了29.21%、22.36%(沉积物)和9.46%、77.27%(生物膜),但同时减弱了锰氧化物对AT吸附的抑制作用,其吸附贡献分别提高了28.98%(沉积物)和17.46%(生物膜)。

关键词: 沉积物, 生物膜, 非残渣态组分, 选择性萃取技术, 阿特拉津, 镉/铜, 吸附

Abstract:

To investigate the effect of coexistent heavy metals on atrazine adsorption onto sediments (surface coatings) before and after the selective extraction treatments in the atrazine-Cd/Cu coexistence systems, a chemical extraction technique was employed to separate non-residual components (Fe/Mn oxides and organic materials) in sediments (surface coatings). The results indicated that the greatest contribution to atrazine adsorption on a molar basis is from Fe oxides and next is from organic materials in the coexistence system, while Mn oxides restrain atrazine adsorption. It was also found that coexistent Cd promoted atrazine adsorption onto original sediments (surface coatings) and each non-residual component, and the promotion was significant at 0.2 mg/L of Cd, with the adsorption contribution of atrazine onto Fe/ Mn oxides and organics enhanced by 3.20%-32.31% for sediments and 1.61%-17.10% for surface coatings, but this simulative effect was generally weakened with increasing concentration of cadmium. Meanwhile, coexistent Cu could restrain atrazine adsorption onto original sediments (surface coatings) and Fe oxides, organic materials, and atrazine adsorption was inhibited most distinctly at 75.0 mg/L of Cu,at this time, the adsorption contribution of atrazine onto Fe oxides and organics reduced by 29.21%, 22.36% for sediments and 9.46%, 77.27% for surface coatings, but coexistent Cu could also reduced the inhibition of artazine adsorption onto Mn oxides by 28.98% (sediments) and 17.46% (surface coatings), respectively.

Key words: sediments, surface coatings, non-residual components, selective extraction technique, atrazine, Cd/Cu, adsorption

中图分类号: 

  • X132
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