生物炭对环磺酮在不同土壤中吸附特性的影响  

Effects of biochar on the adsorption of tembotrione in different soils

作　　者：豆叶枝 葛峰 曹莉 余佳 张悦清 许静 洪明慧 孔德洋 宋宁慧 吴文铸 李菊颖 DOU Yezhi;GE Feng;CAO Li;YU Jia;ZHANG Yueqing;XU Jing;HONG Minghui;KONG Deyang;SONG Ninghui;WU Wenzhu;LI Juying(Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment of the People’s Republic of China,Key Laboratory of Pesticide Environmental Assessment and Pollution Control,Ministry of Environmental Protection,Nanjing 210042,China)

机构地区：[1]生态环境部南京环境科学研究所,国家环境保护农药环境评价与污染控制重点实验室,南京210042

出　　处：《农药学学报》2024年第5期1002-1010,共9页Chinese Journal of Pesticide Science

基　　金：中央级公益性科研院所基本科研业务专项(GYZX230201)。

摘　　要：本文采用振荡平衡法研究了环磺酮在4种不同土壤中的吸附-解吸特性、探讨了影响其吸附特性的主要因素以及添加生物炭对其吸附性的影响。吸附动力学试验结果表明,环磺酮在不同土壤中的吸附平衡时间均为24 h;吸附热力学试验结果表明,Freundlich模型可以很好的拟合环磺酮在4种土壤中的吸附曲线,4种土壤对环磺酮的吸附强度为:红土>水稻土>黑土>潮土;解吸试验结果表明,环磺酮在不同土壤中的滞后系数(H)均<1;土壤pH值越小,环磺酮在土壤中的吸附性越强,有机质及阳离子交换量与环磺酮吸附量呈正相关;环磺酮在4种不同土壤中的吸附量为2.1~20.2 mg/kg,添加不同比例水稻壳生物炭后,吸附量提高到8.3~21.0 mg/kg。该研究为环磺酮的合理使用提供了科学依据。This study investigated the adsorption-desorption characteristics of tembotrione in four different types of soils using the oscillating equilibrium method,explored the primary factors influencing its adsorption properties,and assessed the impact of biochar addition on its adsorptive behavior.The experimental results indicated the following:Adsorption kinetic tests revealed that the adsorption equilibrium time for tembotrione in various soils was 24 hours.The adsorption thermodynamic tests showed that the Freundlich model could effectively fit the adsorption curves of tembotrione in all four soil types.The adsorption intensity of tembotrione in these soils followed the order:red soil>paddy soil>black soil>fluvo-aquic soil.Desorption tests demonstrated that the hysteresis coefficients(H)of tembotrione in different soils were all less than 1.The lower the soil pH value,the stronger the adsorption of tembotrione in the soil.Additionally,there was a positive correlation between the content of organic matter and cation in the soil and the adsorptive properties of tembotrione.The adsorption capacity of tembotrione in the four different soil types ranged from 2.1 to 20.2 mg/kg.After the addition of rice husk biochar at varying ratios,the adsorption capacity increased to 8.3-21.0 mg/kg.This research provides a scientific basis for the rational and scientific use of tembotrione.

关 键 词：生物炭 环磺酮 土壤 吸附-解吸 影响因素 

分 类 号：X53[环境科学与工程—环境工程] TQ424[化学工程]