广东省冲积物成土剖面铊的地球化学特征及生态风险评价

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关键词冲积物成土剖面；铊；地球化学特征；生态风险；广中图分类号 P595；X826 文献标识码A文章编号 0517-6611（2026）03-0076-08doi：10.3969/j. issn. 0517-6611. 2026. 03. 015

开放科学（资源服务）标识码（OSID）：

GeochemicalCharacteristicsofThalliuminWeathering-soilrofilesinGuangdongProvinceandAsessmentonEcologicalRisk LI Su-dan1，HOUQing-ye，YANGZhong-fang²etal（1.Sichuan InstituteofComprehensiveGeologicalSurveyChengdu，ichar 610081；2. School of Earth Sciences and Resources，China University of Geosciences，Beijing 100083）

AbstractBasedonverticalsoilprofilesamplesofthquatearysedientsparentmaterialsinGuangdongProvice，sudiedteconcen trtiosanddistrbutiopsfoeajodaliT）adsleloltioisilbysingeolal indexmethodandpotentialecologicalhazardindex method.Theresultsshowedthat，themaincomponentsindiferentprofiles were SiO2 ， （20 Al2O3 ， and T Fe2O3 ，whose total content reached 87.94% . The soil in the study area experienced a relatively strong chemical weathering processunderthewarmandhumidclimatecondion.Themajorelementsweremigratedandleachedduringthechemicalweatheringproces. TheconcentratiosofTwashertanteatioaladGuangdongsoilackgroudvusdcatigtatTseicdtovaiege inthesoil.TheanalysisresultsofTpolltionrisklevelrevealedthatsoilsinthestudyareahavebeenslightlycontaminatedbyT1. Key wordsWeathering-soil profiles;Thallum;Geochemical characteristics;Ecological risk;Guangdong Province

铊（T1）是一种剧毒金属，是我国“十四五”重点防控的7种重金属污染物之一，自然界中TI含量水平甚低（仅为0.75mg/kg）[1] 。（剩余14080字）