{"title":"破译Sb来源和运输过程在采矿和冶炼影响的河流系统（奥鲁罗，玻利维亚）：从Sb同位素的见解","authors":"Colin Ferrari, Eléonore Resongles, Rémi Freydier, Marizol Flores, Mauricio Ormachea, Gerardo Zamora Echenique, Corinne Casiot","doi":"10.1007/s11270-025-08445-6","DOIUrl":null,"url":null,"abstract":"<div><p>Antimony (Sb) is a contaminant of increasing concern; its sources and fate in the environment require particular attention and its isotopes could be useful geochemical tracers. In this study, Sb isotopic composition was investigated along two rivers impacted by mining and smelting activities in the city of Oruro (Bolivia). Antimony concentration and isotope ratio were measured in water, suspended particulate matter and sediments during two contrasted seasons along a gradient of pH (from 1.6 to 6.5) and Sb concentration (from 8057 to 7 µg.L<sup>−1</sup>). Antimony isotopic composition varied over a range of ~ 1 ‰ considering all sample types (-0.09 ≤ δ<sup>123</sup>Sb ≤ + 0.93 ‰). The main stream impacted by acid mine drainage showed a progressive increase of δ<sup>123</sup>Sb in the dissolved phase (+ 0.42 to + 0.70 ‰), concomitant to Fe precipitation and Sb concentration decrease. This suggested that natural Sb attenuation by sorption onto neoformed Fe oxyhydroxysulphates was involved as this process favours light isotopes in the solid (Δ<sup>123</sup>Sb<sub>water-sediments</sub> averaged + 0.3 ‰). Smelting-impacted tributary exhibited lighter dissolved Sb (+ 0.29 ≤ δ<sup>123</sup>Sb ≤ + 0.36 ‰). Lake Uru-Uru which receives both rivers exhibited a δ<sup>123</sup>Sb value of + 0.28 ‰ in the wet season and + 0.55 ‰ in the dry season, which might reflect different contributions of the AMD- and smelter-impacted rivers. The study reveals, for the first time, the impact of two distinct anthropogenic sources on antimony (Sb) isotopic composition on a water body and provides new insights into the ability of antimony isotopes to trace sources and processes in contaminated aquatic systems.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 12","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Deciphering Sb Sources and Transport Processes in a Mining and Smelting-Impacted River System (Oruro, Bolivia): Insights from Sb Isotopes\",\"authors\":\"Colin Ferrari, Eléonore Resongles, Rémi Freydier, Marizol Flores, Mauricio Ormachea, Gerardo Zamora Echenique, Corinne Casiot\",\"doi\":\"10.1007/s11270-025-08445-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Antimony (Sb) is a contaminant of increasing concern; its sources and fate in the environment require particular attention and its isotopes could be useful geochemical tracers. In this study, Sb isotopic composition was investigated along two rivers impacted by mining and smelting activities in the city of Oruro (Bolivia). Antimony concentration and isotope ratio were measured in water, suspended particulate matter and sediments during two contrasted seasons along a gradient of pH (from 1.6 to 6.5) and Sb concentration (from 8057 to 7 µg.L<sup>−1</sup>). Antimony isotopic composition varied over a range of ~ 1 ‰ considering all sample types (-0.09 ≤ δ<sup>123</sup>Sb ≤ + 0.93 ‰). The main stream impacted by acid mine drainage showed a progressive increase of δ<sup>123</sup>Sb in the dissolved phase (+ 0.42 to + 0.70 ‰), concomitant to Fe precipitation and Sb concentration decrease. This suggested that natural Sb attenuation by sorption onto neoformed Fe oxyhydroxysulphates was involved as this process favours light isotopes in the solid (Δ<sup>123</sup>Sb<sub>water-sediments</sub> averaged + 0.3 ‰). Smelting-impacted tributary exhibited lighter dissolved Sb (+ 0.29 ≤ δ<sup>123</sup>Sb ≤ + 0.36 ‰). Lake Uru-Uru which receives both rivers exhibited a δ<sup>123</sup>Sb value of + 0.28 ‰ in the wet season and + 0.55 ‰ in the dry season, which might reflect different contributions of the AMD- and smelter-impacted rivers. The study reveals, for the first time, the impact of two distinct anthropogenic sources on antimony (Sb) isotopic composition on a water body and provides new insights into the ability of antimony isotopes to trace sources and processes in contaminated aquatic systems.</p></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"236 12\",\"pages\":\"\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2025-08-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11270-025-08445-6\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-08445-6","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Deciphering Sb Sources and Transport Processes in a Mining and Smelting-Impacted River System (Oruro, Bolivia): Insights from Sb Isotopes
Antimony (Sb) is a contaminant of increasing concern; its sources and fate in the environment require particular attention and its isotopes could be useful geochemical tracers. In this study, Sb isotopic composition was investigated along two rivers impacted by mining and smelting activities in the city of Oruro (Bolivia). Antimony concentration and isotope ratio were measured in water, suspended particulate matter and sediments during two contrasted seasons along a gradient of pH (from 1.6 to 6.5) and Sb concentration (from 8057 to 7 µg.L−1). Antimony isotopic composition varied over a range of ~ 1 ‰ considering all sample types (-0.09 ≤ δ123Sb ≤ + 0.93 ‰). The main stream impacted by acid mine drainage showed a progressive increase of δ123Sb in the dissolved phase (+ 0.42 to + 0.70 ‰), concomitant to Fe precipitation and Sb concentration decrease. This suggested that natural Sb attenuation by sorption onto neoformed Fe oxyhydroxysulphates was involved as this process favours light isotopes in the solid (Δ123Sbwater-sediments averaged + 0.3 ‰). Smelting-impacted tributary exhibited lighter dissolved Sb (+ 0.29 ≤ δ123Sb ≤ + 0.36 ‰). Lake Uru-Uru which receives both rivers exhibited a δ123Sb value of + 0.28 ‰ in the wet season and + 0.55 ‰ in the dry season, which might reflect different contributions of the AMD- and smelter-impacted rivers. The study reveals, for the first time, the impact of two distinct anthropogenic sources on antimony (Sb) isotopic composition on a water body and provides new insights into the ability of antimony isotopes to trace sources and processes in contaminated aquatic systems.
期刊介绍：
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation.
Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
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