•研究论文•doi:10.16801/j.issn.1008-7303.2022.0137三氟苯嘧啶在5种土壤中的吸附与解吸附行为缪心忆1,范添乐1,崔佳佳1,包鑫1,孟志远1,2,陈小军*,1(1.扬州大学植物保护学院/农业与农产品安全国际合作联合实验室(扬州大学)，江苏扬州225009；2.扬州大学广陵学院，江苏扬州225009)摘要：为研究三氟苯嘧啶的吸附-解吸附特性，采用振荡平衡法研究了三氟苯嘧啶在采集于吉林通化、江苏扬州、江西萍乡、广西南宁和海南海口等地的5种土壤中的吸附-解吸附行为及其环境影响因素。结果表明：三氟苯嘧啶在土壤中的吸附动力学符合Elovich模型，吸附和解吸附等温线符合Freundlich模型，吸附常数在1.886~7.626。温度的升高更有利于吸附，土壤对三氟苯嘧啶的吸附主要是物理吸附；随着溶液中pH值的升高，土壤对三氟苯嘧啶的吸附能力逐渐下降。除广西南宁黏壤土外，三氟苯嘧啶在5种土壤中的解吸附过程中存在滞后现象，不易在土壤中长期积累，具有一定的迁移特性。关键词:三氟苯嘧啶；土壤；吸附；解吸附；动力学模型；等温模型中图分类号：S481+.8文献标志码：AAdsorptionanddesorptionbehaviorsoftriflumezopyriminfivesoilsMIAOXinyi1,FANTianle1,CUIJiajia1,BAOXin1,MENGZhiyuan1,2,CHENXiaojun*,1(1.CollegeofPlantProtection,YangzhouUniversity/JointInternationalResarchLaboratotyofAgriculture&Agri-ProductSafety(YangzhouUniversity),Yangzhou225009,JiangsuProvince,China;2.GuanglingcollegeofYangzhouuniversity,Yangzhou225009,JiangsuProvince,China)Abstract:Inordertostudytheadsorption-desorptioncharacteristicsoftriflumezopyriminsoil,Theadsorption-desorptionbehavioroftriflumezopyriminfivesoilswasstudiedusingbatchequilibriummethod,andtheeffectsoftheenvironmentalfactorssuchastemperatureandpHontheadsorptionpropertiesoftriflumezopyrimwerestudied.TheresultsshowedthattheadsorptionkineticsoftriflumezopyriminsoilwasinaccordancewiththeElovichkineticsmodel,andtheadsorptionanddesorptionisothermscouldbewellfittedbyFreundlichmodels.Theadsorptionconstantsrangedfrom1.886to7.626.Theincreaseoftemperaturewasmoreconducivetoadsorption,andtheadsorptionoftriflumezopyriminsoilwasmainlyphysicaladsorption.WiththeincreaseofpHvalueinthesolution,theadsorptioncapacityofsoilstotriflumezopyrimdecreasedgradua...
