喀斯特地区土壤及不同生长年限地龙中稀土元素的分布特征分析

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关键词：地龙；稀土元素；富集；土壤；健康风险中图分类号：R285.5 文献标识码：A文章编号：0439-8114（2025）12-0194-05DOI：10.14088/j.cnki.issn0439-8114.2025.12.033开放科学（资源服务）标识码（OSID）：

Analysis of rare earth elements in soil and different growth years of earthworms karst areas

LYUChu-han1，SUHua-sheng1，ZANHuan-nan²，LITing1 （1.Guangxi AgriculturalVocational and Technical University，Nanning 53ooO7，China; 2.Guangxi-asean Food Inspection and Testing Center，Nanning 53oo21，China）

Abstract：Toanalyzetedistrbutionpattes，enichmentcharacteristics，empraldynamiccontentpates，ndcoeiosetwn14rareearth elementsinsoilsystemsofkarstareasanddiferentgrowthyearsofarthwormsandtoprovidescientificbasis for thehealthriskaessmentandenrichmentchaacteristicsofaearthlemetsinDilong.Sampsofdiferentagsofeartosand soilwerecolecting，andusing inductivelycoupled plasma massspectrometry（ICP-MS）todeterminethecontentofrareearthelements inearthwormsandsoilofdifferentages.Resultsshowedthatthedistributionpatersofsoilrareearthelementsand14rare earthelementsinearthwormsshowedsignificantinheritance.Theydidnotundergosignificantfractionationduring transportwithinthe earthworms，andtheiologcaleichmentcoeffientwasonlyO-0O2.Thereasnosignificancorelationbetweenrarearthelementcontentadgowthage，utereasasignificantpositivecorelationbetweenelements.Therarearthlementcontntarthwormswasin the order of Ce>La>Nd>Pr>Gd>Sm > Dy>Eu>E r> Yb > Tb>Ho>Tm>Lu.The distribution characteristics of rare earth elementsinearthwormswereclearlyindirectlyregulatedbysoilforbioacumulation，ndtheirenrichmentabilitywasweak.Theacept able daily intake（ADI）of rare earth elements in earthworms was far below the safety limit of 0.0 17mg/（kg⋅d） ，and did not pose a health risk.This provided a reference for soil aquaculture of earthworms in karst areas.

Keywords：Dilong；rare earth elements；enrichment；soil；health risks

稀土元素（Rareearth，REEs）又称稀土金属，是位于元素周期表ⅡB族的各金属元素的总称，包括镧（La）、铈（Ce）、镨 （Pr） 、钕（Nd）、钜（ Pm， （ Sm） ）、铕 Eu） 、钆（Gd）、铽（Tb）、镝（Dy）钬（Ho）、饵 （Er） 人铥（ Tm） ）、镜（Yb）和（Lu）。（剩余7820字）