自然水体生物膜、悬浮颗粒物和表层沉积物的轻、重组分对有机氯农药的吸附特征

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 919.

自然水体生物膜、悬浮颗粒物和表层沉积物的轻、重组分对有机氯农药的吸附特征

郭志勇, 花修艺, 梁大鹏, 董德明, 李明, 李雅婷, 宋兴, 林桦一

吉林大学环境与资源学院, 长春 130012

收稿日期:2010-01-14 出版日期:2010-05-10 发布日期:2010-05-10
通讯作者: 董德明, 男, 博士, 教授, 博士生导师, 主要从事环境污染与控制化学研究. E-mail: dmdong@jlu.edu.cn
基金资助:
国家自然科学基金(批准号: 20877033)和高等学校博士学科点专项科研基金(批准号: 20060183020)资助.

Sorption Characteristic of Organochlorine Pesticides onto the Lighter and Heavier Components of Biofilms, Suspended Particles and Surface Sediments in Natural Water

GUO Zhi-Yong, HUA Xiu-Yi, LIANG Da-Peng, DONG De-Ming*, LI Ming, LI Ya-Ting, SONG Xing, LIN Hua-Yi

College of Environment and Resources, Jilin University, Changchun 130012, China

Received:2010-01-14 Online:2010-05-10 Published:2010-05-10
Contact: DONG De-Ming. E-mail: dmdong@jlu.edu.cn
Supported by:
国家自然科学基金(批准号: 20877033)和高等学校博士学科点专项科研基金(批准号: 20060183020)资助.

摘要/Abstract

摘要：

利用重液分离方法对自然水体中的生物膜、悬浮颗粒物和表层沉积物中的轻、重组分进行了分离, 采用批量平衡法研究了各固相样品及其轻、重组分对六六六(HCHs)和滴滴涕(DDTs)的吸附特征, 通过比较各组分对吸附的贡献, 分析了固相样品吸附HCHs和DDTs的机制. 结果表明, 表层沉积物对HCHs和DDTs的吸附过程是沉积物中矿物表面和无定型有机质中的分配机制起主要作用, 而对于结构更为复杂、非均质性程度更高的生物膜和悬浮颗粒物对HCHs和DDTs的吸附过程同时发生线性的分配作用和非线性的孔隙填充作用.

关键词: 生物膜; 悬浮颗粒物; 表层沉积物; 有机氯农药; 吸附

Abstract:

Lighter and heavier components of biofilms, suspended particles and surface sediments in natural water were separated by cesium chloride solution with a specific gravity of 1.8. The sorption of HCHs and DDTs on the solid materials and their lighter and heavier components was investigated through a batch-equilibration method. Sorption mechanisms were analyzed by comparing the contribution of these separated components. The results indicate that HCHs and DDTs partition in the mineral surface and amorphous organic matter is the main sorption mechanism of surface sediments. The linear partition mechanism and nonlinear pore-filling mechanism were simultaneously taken place in HCHs and DDTs sorption on Biofims and suspended particles due to their great heterogeneity and containing more complex components and structures.

Key words: Biofilms; Suspended particles; Surface sediment; Organochlorine pesticide; Sorption

TrendMD:

郭志勇, 花修艺, 梁大鹏, 董德明, 李明, 李雅婷, 宋兴, 林桦一. 自然水体生物膜、悬浮颗粒物和表层沉积物的轻、重组分对有机氯农药的吸附特征. 高等学校化学学报, 2010, 31(5): 919.

GUO Zhi-Yong, HUA Xiu-Yi, LIANG Da-Peng, DONG De-Ming*, LI Ming, LI Ya-Ting, SON. Sorption Characteristic of Organochlorine Pesticides onto the Lighter and Heavier Components of Biofilms, Suspended Particles and Surface Sediments in Natural Water. Chem. J. Chinese Universities, 2010, 31(5): 919.

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