Unveiling the origins and transport processes of radioactive pollutants downstream from a former U-mine site using isotopic tracers and U-238 series disequilibrium

不平衡 环境修复 湿地 同位素特征 污染物 环境科学 放射性废物 污染 地下水 地质学 环境化学 采矿工程 化学 同位素 生态学 岩土工程 物理 有机化学 眼科 医学 量子力学 核化学 生物
作者
Tingting Geng,Arnaud Mangeret,Olivier Péron,David Suhard,Josselin Gorny,Louise Darricau,Mathieu Le Coz,Nicolas Ait-ouabbas,Karine David,Christophe Debayle,Pascale Blanchart,Gilles Montavon,Alkiviadis Gourgiotis
出处
期刊:Journal of Hazardous Materials [Elsevier BV]
卷期号:472: 134416-134416 被引量:1
标识
DOI:10.1016/j.jhazmat.2024.134416
摘要

High U concentrations (reaching up to 14850 mg ⋅ kg−1), were determined in soils and sediments of a wetland downstream of a former U mine in France. This study aims to identify the origin of radioactive contaminants in the wetland by employing Pb isotope fingerprinting, (234U/238U) disequilibrium, SEM, and SIMS observations. Additionally, information about U and 226Ra transport processes was studied using U-238 series disequilibrium. The results of Pb fingerprinting highlighted inherited material inputs of different U-mines with mainly two types of U-ores: i) pitchblende (UO2), and ii) parsonsite Pb2(UO2)(PO4)2. Moreover, significant disequilibrium of (230Th/238U) and (226Ra/230Th) activity ratios highlighted the mobility of 238U and 226Ra in the wetland, primarily driven by the water table fluctuations. Finally, this work uncovered a limitation of Pb isotope fingerprinting in the case of parsonsite materials, as the high natural Pb content of this mineral may hide the uranogenic Pb signature in the samples. Even if environmental concerns (ex. wastewater treatment plant) have been integrated in the management plant of the majority of U-mine sites by the operators, in some cases, the mining activities have led to the dissemination of radioactive materials (ex, dust, particles transported through water) in nearby areas. Contaminated sites could cause potential radiological risks to the environment and living organisms. For this reason, this work proposes U-Pb isotopic tracing allowing the efficient identification of these materials in the environment. The identification of these materials can help to address an effective management and remediation strategies for these sites.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
organoid elegan完成签到,获得积分10
刚刚
1秒前
2秒前
3秒前
3秒前
4秒前
4秒前
爆米花应助不安的半梦采纳,获得10
6秒前
fuje发布了新的文献求助10
6秒前
空123发布了新的文献求助10
6秒前
雨天后完成签到,获得积分10
8秒前
9秒前
9秒前
Jasper应助wzx采纳,获得10
10秒前
乐观的仇天完成签到,获得积分10
10秒前
10秒前
腼腆的修杰完成签到,获得积分10
10秒前
情怀应助要减肥的访旋采纳,获得10
11秒前
武雨寒发布了新的文献求助10
11秒前
12秒前
刘强东发布了新的文献求助10
14秒前
15秒前
旺仔Mario完成签到,获得积分10
16秒前
16秒前
16秒前
16秒前
Dallas完成签到,获得积分10
17秒前
庾稀发布了新的文献求助10
17秒前
芜湖起飞完成签到 ,获得积分10
17秒前
19秒前
ckyyds完成签到 ,获得积分10
20秒前
wzx发布了新的文献求助10
21秒前
完美世界应助澡雪采纳,获得10
21秒前
星辰大海应助烛光采纳,获得30
22秒前
dongdong发布了新的文献求助10
22秒前
Dallas发布了新的文献求助10
22秒前
23秒前
旺仔Mario发布了新的文献求助10
23秒前
23秒前
啷个里个洋完成签到,获得积分20
26秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975836
求助须知:如何正确求助?哪些是违规求助? 3520174
关于积分的说明 11201364
捐赠科研通 3256576
什么是DOI,文献DOI怎么找? 1798362
邀请新用户注册赠送积分活动 877539
科研通“疑难数据库(出版商)”最低求助积分说明 806426