High-resolution two-dimensional mapping of arsenic concentration in soil-water micro-interfaces with diffusive gradients in thin films

IF 9 Q1 ENVIRONMENTAL SCIENCES

Environmental Chemistry and Ecotoxicology Pub Date : 2025-01-01 DOI:10.1016/j.enceco.2024.12.006

Xitong Li, Jiahui Zuo, Chuangchuang Zhang, Tieliang Zhang, Zeying He, Qiwen Zhou, Yujie Zhao, Wenjng Liu

{"title":"High-resolution two-dimensional mapping of arsenic concentration in soil-water micro-interfaces with diffusive gradients in thin films","authors":"Xitong Li, Jiahui Zuo, Chuangchuang Zhang, Tieliang Zhang, Zeying He, Qiwen Zhou, Yujie Zhao, Wenjng Liu","doi":"10.1016/j.enceco.2024.12.006","DOIUrl":null,"url":null,"abstract":"<div><div>Arsenic (As) contamination in soils poses significant environmental and health risks, particularly in Asia. We present a new diffusive Gradients in thin-film (DGT) binding material (Bio-TiO<sub>2</sub>) using microbial-assisted <em>in situ</em> precipitation, to determine the spatial distribution of As at submillimeter resolution. The Bio-TiO₂ gel exhibited superior homogeneity, smaller particle sizes, and higher adsorption capacity for As(V) (133.6 μg/cm<sup>2</sup>) and As(III) (55.2 μg/cm<sup>2</sup>) compared to most reported As binding gels. The DGT measurements provided high-resolution, two-dimensional mapping on As distribution in soil-water micro-interfaces process during soil flooding and drainage conditions, elucidating As dynamics with a sub-millimeter resolution (∼0.1 mm per pixel). This work presents an innovative and efficient method for As monitoring, providing significant implications for assessing As bioavailability and environmental risk.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 211-220"},"PeriodicalIF":9.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Chemistry and Ecotoxicology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590182624000663","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Arsenic (As) contamination in soils poses significant environmental and health risks, particularly in Asia. We present a new diffusive Gradients in thin-film (DGT) binding material (Bio-TiO₂) using microbial-assisted in situ precipitation, to determine the spatial distribution of As at submillimeter resolution. The Bio-TiO₂ gel exhibited superior homogeneity, smaller particle sizes, and higher adsorption capacity for As(V) (133.6 μg/cm²) and As(III) (55.2 μg/cm²) compared to most reported As binding gels. The DGT measurements provided high-resolution, two-dimensional mapping on As distribution in soil-water micro-interfaces process during soil flooding and drainage conditions, elucidating As dynamics with a sub-millimeter resolution (∼0.1 mm per pixel). This work presents an innovative and efficient method for As monitoring, providing significant implications for assessing As bioavailability and environmental risk.

Abstract Image

查看原文本刊更多论文

薄膜中具有扩散梯度的土壤-水微界面中砷浓度的高分辨率二维映射

土壤中的砷污染构成重大的环境和健康风险，特别是在亚洲。我们提出了一种新的扩散梯度在薄膜（DGT）结合材料（Bio-TiO2）中使用微生物辅助原位沉淀，以确定亚毫米分辨率As的空间分布。与大多数As结合凝胶相比，Bio-TiO 2凝胶具有较好的均匀性，粒径较小，对As(V) （133.6 μg/cm2）和As(III) （55.2 μg/cm2）的吸附能力更高。DGT测量提供了土壤淹水和排水条件下土壤-水微界面过程中砷分布的高分辨率二维地图，以亚毫米分辨率（每像素0.1毫米）阐明砷动力学。本研究提出了一种创新而有效的砷监测方法，对评估砷的生物利用度和环境风险具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Environmental Chemistry and Ecotoxicology

CiteScore

15.40

自引率

0.00%

发文量