不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响

辛金豪; 曾清如; 廖柏寒; 杨成建; 何昶; 周婷

环境化学

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辛金豪, 曾清如, 廖柏寒, 杨成建, 何昶, 周婷. 不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响[J]. 环境化学, 2009, 28(5): 655-660.

引用本文:

辛金豪, 曾清如, 廖柏寒, 杨成建, 何昶, 周婷. 不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响[J]. 环境化学, 2009, 28(5): 655-660.

XIN Jin-hao, ZENG Qing-ru, LIAO Bo-han, YANG Cheng-jian, HE Chang, ZHOU Ting . EFFECT OF DIFFERENT SEDIMENT TREATMENTS ON THE ADSORPTION BEHAVIORS OF ORGANIC PESTICIDES AND NONIONIC SURFACTANT ON SEDIMENT[J]. Environmental Chemistry, 2009, 28(5): 655-660.

Citation:

不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响

1.
湖南农业大学, 长沙, 410128;
2.
中南林业科技大学资源环境学院, 长沙, 410004;
3.
西安建筑科技大学环境与市政工程学院, 西安, 710055

EFFECT OF DIFFERENT SEDIMENT TREATMENTS ON THE ADSORPTION BEHAVIORS OF ORGANIC PESTICIDES AND NONIONIC SURFACTANT ON SEDIMENT

1.
Hunan Agricultural University, Changsha, 410128, China;
2.
College of Resource and Environment, Central South University of Forestry and Technology, Changsha, 410004, China;
3.
Xi'an University of Architecture and Technology, College of Environment &Municipal Engineering Xi'an, 710055, China

摘要: 四种不同的方法去除沉积物有机质,采用振荡平衡法研究了有机农药、非离子表面活性剂在沉积物上的吸附行为及非离子表面活性剂对有机农药吸附的影响.结果表明,经HCl处理后,沉积物有机碳含量增加,而经Na4P2O7,NaOH和H2O2处理后沉积物有机碳含量均降低;甲基对硫磷、西维因的吸附取决于沉积物有机碳的分配作用,与矿物质无关;沉积物矿物组分的表面作用和微孔性作用使得高极性有机农药克百威在低有机碳含量沉积物上的吸附量增加;Tween-80使甲基对硫磷在未处理和HCl处理的沉积物上的吸附量减少,在NaOH处理和H2O2处理的沉积物上的吸附量增加.
- 沉积物 /
- 有机农药 /
- 非离子表面活性剂 /
- 吸附
Abstract: The sediment was treated using four methods and the adsorption behaviors of three organic pesticides and nonionic surfactant on sediment and the effect of nonionic surfactant on organic pesticide on sediment were investigated. The results showed that the percentage of HCl-treatment sediment organic carbon content increased,but the other three treatments reduced sediment organic carbon content. The adsorption behaviors of parathion methyl and carbaryl were mainly influenced by the organic carbon contents of sediment,Partitioning effect of organic carbon took a major role on the adsorption of parathion-methyl and carbaryl,and the adsorption of parathion methyl and carbaryl were independent of the content of minerals in sediment. The surface and microporosity action of minerals in sediment increased the adsorption of the high-polar organic pesticide on the sediment with low organic content. The adsorption mechanism of Tween-80 on sediment involved that distribution of hydrophobic chain in organic carbon,electrostatic between hydrogen bonds,protonated group and negatively hydrated aluminum silicates reduced the adsorption capacity of parathion-methyl on sediment.Hydrophobic of adsorbed surfactant molecules increased the adsorption capacity.
- sediment /
- organic pesticide /
- nonionic surfactant /
- adsorption

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辛金豪, 曾清如, 廖柏寒, 杨成建, 何昶, 周婷. 不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响[J]. 环境化学, 2009, 28(5): 655-660.

引用本文:

辛金豪, 曾清如, 廖柏寒, 杨成建, 何昶, 周婷. 不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响[J]. 环境化学, 2009, 28(5): 655-660.

Citation:

不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响

1. 湖南农业大学, 长沙, 410128;
2. 中南林业科技大学资源环境学院, 长沙, 410004;
3. 西安建筑科技大学环境与市政工程学院, 西安, 710055

收稿日期: 2008-09-15

关键词:

摘要: 四种不同的方法去除沉积物有机质,采用振荡平衡法研究了有机农药、非离子表面活性剂在沉积物上的吸附行为及非离子表面活性剂对有机农药吸附的影响.结果表明,经HCl处理后,沉积物有机碳含量增加,而经Na4P2O7,NaOH和H2O2处理后沉积物有机碳含量均降低;甲基对硫磷、西维因的吸附取决于沉积物有机碳的分配作用,与矿物质无关;沉积物矿物组分的表面作用和微孔性作用使得高极性有机农药克百威在低有机碳含量沉积物上的吸附量增加;Tween-80使甲基对硫磷在未处理和HCl处理的沉积物上的吸附量减少,在NaOH处理和H2O2处理的沉积物上的吸附量增加.

English Abstract

EFFECT OF DIFFERENT SEDIMENT TREATMENTS ON THE ADSORPTION BEHAVIORS OF ORGANIC PESTICIDES AND NONIONIC SURFACTANT ON SEDIMENT

1. Hunan Agricultural University, Changsha, 410128, China;
2. College of Resource and Environment, Central South University of Forestry and Technology, Changsha, 410004, China;
3. Xi'an University of Architecture and Technology, College of Environment &Municipal Engineering Xi'an, 710055, China

Received Date: 2008-09-15

Keywords:

Abstract: The sediment was treated using four methods and the adsorption behaviors of three organic pesticides and nonionic surfactant on sediment and the effect of nonionic surfactant on organic pesticide on sediment were investigated. The results showed that the percentage of HCl-treatment sediment organic carbon content increased,but the other three treatments reduced sediment organic carbon content. The adsorption behaviors of parathion methyl and carbaryl were mainly influenced by the organic carbon contents of sediment,Partitioning effect of organic carbon took a major role on the adsorption of parathion-methyl and carbaryl,and the adsorption of parathion methyl and carbaryl were independent of the content of minerals in sediment. The surface and microporosity action of minerals in sediment increased the adsorption of the high-polar organic pesticide on the sediment with low organic content. The adsorption mechanism of Tween-80 on sediment involved that distribution of hydrophobic chain in organic carbon,electrostatic between hydrogen bonds,protonated group and negatively hydrated aluminum silicates reduced the adsorption capacity of parathion-methyl on sediment.Hydrophobic of adsorbed surfactant molecules increased the adsorption capacity.

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不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响

EFFECT OF DIFFERENT SEDIMENT TREATMENTS ON THE ADSORPTION BEHAVIORS OF ORGANIC PESTICIDES AND NONIONIC SURFACTANT ON SEDIMENT

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不同处理方法去除有机质对沉积物吸附有机农药和非离子表面活性剂的影响

English Abstract

EFFECT OF DIFFERENT SEDIMENT TREATMENTS ON THE ADSORPTION BEHAVIORS OF ORGANIC PESTICIDES AND NONIONIC SURFACTANT ON SEDIMENT

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