江西科学2025，Vol.43Issue(6)：1007-1014,8.DOI:10.13990/j.issn1001-3679.2025.06.001
赣江南昌段河流沉积物铊元素含量、污染风险及其影响因素分析
The Concentrations,Pollution Risk and Influence Factors of Thallium Element of Sediments of Nanchang City Reach of Ganjiang River
摘要
Abstract
Thallium(Tl)is recognized as a toxic metallic element posing severe threats to hu-man health and ecosystems.In recent years,Tl contamination events in the Ganjiang River Basin have indicated potential pollution risks;however,systematic studies remain lacking.In this study,floodplain sediment profiles were collected at Houtian Desert(HT;before the river enters the urban area)and Qiushui Square(QS;within the urban center)along the Nanchang reach of the Ganjiang River.Sediments were analyzed for Tl concentration,pH,organic matter,and grain-size composition.The aim of this study was to assess the pollu-tion level and potential risk of Tl element,as well as its influence factors.The results showed that the Tl concentration of QS profile was markedly higher than in the HT profile,with mean values of 1.01 mg/kg(QS)and 0.59 mg/kg(HT),respectively.Potential eco-logical risk assessments indicated a moderate risk level at QS and a slight risk level at HT.The non-carcinogenic health risk assessments yielded hazard quotients(HQ)below 1,indi-cating no overall non-carcinogenic health risk from Tl in sediments.However,children ex-hibited significantly higher non-carcinogenic risk than adults,which warrants attention.The Tl element concentrations of HT and QS profile were significantly affected by the varia-tions of total organic content,pH value,grain size composition and iron-bearing minerals.Acidic,organic-rich,and fine-grained sedimentary environments favored Tl enrichment.关键词
铊元素/污染特征/河流沉积物/赣江南昌段Key words
Thallium/pollution level/river sediments/Nanchang reach of Ganjiang River分类
天文与地球科学引用本文复制引用
ZHOU Yuqin,LI Wen,WANG Simeng,GAO Yingqiu,CUI Panpan..赣江南昌段河流沉积物铊元素含量、污染风险及其影响因素分析[J].江西科学,2025,43(6):1007-1014,8.基金项目
国家自然科学基金项目(42167063). （42167063）
