磷和砷在不同场地土壤中的吸附特征和迁移规律

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中图分类号：X53 文献标志码：A 文章编号：1672-2043（2026）01-0082-12 doi：10.11654/jaes.2025-0040

Phosphorus and arsenic adsorption characteristics and migration features in soils from diferent sites

INHua¹，XUDongying²，KANGRunfeng²，YINXianqiang²，SUNHuimin （1.HanzhongEnviromentalMonitingCenterStation，Hanzhong730China;2.ColgeofaturalResourcsandEviot NorthwestA&FUniversity，Yangling7121oO，China）

Abstract：ToivestgatetheadsorptioncharacteristicsofphosphorusP）andarsenicAs）andtheirmigrationehaviorsindierentsie soils，batcheuiliumadsoptotstsereducted，ompementedbaingelectrorosprgdispsiestoy （SEM-EDS），X-raydifraction（XRD），andparticlesizeanalysistocharacterizethesoilsthoroughly.Theresultsidicatedthatthe adsorptionproessofdAsinslts（ddysoilaonsoilnddlflowdasecdiic modelandtheFrundchoel，ugetigtatultiyericaldsorptiotookplaceoteterogeeoussurfacsoftesilse adsorptioncapacityofsoilfrPandAs（V）isifuenedbypHvalue，onicstrengthandiontype.Astheinitialpvalueicreassand ionicstrngthdecreass，theadsoptioncapacityfthesoildiminiss.BasedonSEDSndRDanalysis，tedierensinface morphologyandelementcompositionofthethreesoilswererevealed.Thesurfceofcinnamosoilisoughandrichinionandaluum oxides.ThesemineralssignificantlyenhancetheiradsorptioncapacityforPandAs（V）throughligandexchangeandsurface complexation.hesufaceofrdsoilismoothandhasaighuartzcontentesultingintsweakeradsorptiocapacity.Toughaspot experiment，itwasfoundthatthemigrationbehaviorofPandAs（V）inthetreesoiltpesincreasedwithrisingpHvalue.Amongthm，P andAs（V）havethestrongestmigrationabilityinredsoil.Thisisbecausetheoarseparticlesandighporeconecivityofedsoil

promotethe migrationofPandAs（V），whilethefinepartclesandhighadsorptioncapacityofinamonsoil inhibitthemigrationof polutants.AditionalytemigratioabilityofAs（V）wassignificantlygeaterthanthatofPudervaryingpHcondiosoreover increasedionicstrengthexhibitedaninibitoryefectotemigrationcapacitiesofothPandAs（V）acrossdiferentsoiltype.is studyevealsthediferensintedsorptoandmgrationbehaviorofPandAs（V）indierentsoils，rovidesimporantsietificbasis for a deeper understanding of the environmental behavior of phosphorus and arsenic in soils.

Keywords：phosphorus; arsenic; soil; adsorption; transport

砷（As）是一种广泛存在于自然环境中的类金属元素，具有强烈的毒性，并被国际癌症研究机构（IARC）列为A级致癌物质[-2]。（剩余20697字）