灭草松在土壤中吸附的支配因素

被引：32

作者：

李克斌

刘维屏

周瑛

王红宇

机构：

[1] 浙江大学环境科学研究所

来源：

环境科学 | 2003年 / 01期

关键词：

灭草松; 吸附; 阴离子吸附; 有机质;

D O I：

10.13227/j.hjkx.2003.01.022

中图分类号：

X53 [土壤污染及其防治];

学科分类号：

082803 ; 120405 ;

摘要：

通过振荡平衡法测定了灭草松在 6种土壤中的吸附等温线 ,计算了灭草松在吸附过程中平均偏摩尔自由能的变化值 .结果表明灭草松在其中 5种土壤上的吸附等温线为直线 ,分配常数Kd0 1 4～ 0 3 1mL·g- 1;土壤吸附灭草松的强弱次序为 :德清水稻土 >安吉水稻土 (pH4 79) >余杭水稻土 >临安红壤 >安吉水稻土 (pH7 3 6) >德清黄壤 .土壤性质与分配常数的相关分析 ,发现支配灭草松在土壤上吸附的主要因素是pH值和土壤有机质含量 .灭草松在土壤上的吸附主要是中性灭草松及其阴离子在土壤有机质中的分配 ,与有机质性质关系不大

引用

页码：126 / 130

页数：5

共 10 条

[1] Sorption and degradation of bentazon in conventional- and no-till dundee soil. Gaston L A,Locke M A,Zablotowicz R M. Journal of Environmental Quality . 1996
[2] Adsorption and the Gibbs surface excess. Chattoraj D K,Birdi K S. . 1984
[3] Soil adsorption of neutral and anionic forms of a sulfonamide herbicide, flumetsulam. Fontaine D D,Lehmann R G,Miller J R. Journal of Environmental Quality . 1991
[4] Modeling the impact of conservation tillage practices on pesticide concentration in ground and surface waters. Donigian A S,Carsel R F. Environmental Toxicology . 1987
[5] Sorption of ionisable organic compound by field soils. Nicholls P H,Evans A A. Pesticide Science . 1991
[6] Pesticide sorption onto aquifer sediments. Rea J E,Cooper C S,Parker A et al. Journal of Geochemical Exploration . 1998
[7] Leaching of dichlorprop, bentazon, and 36 Cl in nisturbed field lysimeters of different of different agricultural soils. Bergdtrom L F,Jarvis N J. Weed Science . 1993
[8] Experimental approaches and analytical techniques for determining organic compound bound residues in soil and sediment. Northcott G L,Jones K C. Environmental Pollution . 2000
[9] Sorption of bentazon and degradation products in two Missippi soils. Gaston L A,Locke M A,Steven C W. Weed Science . 1996
[10] Bentazon Leaching in four illions soils. Edward W S,Loyd M W,Llody C H et al. Journal of Agricultural and Food Chemistry . 1975

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