Environmental Chemistry and Ecotoxicology最新文献

{"title":"Simultaneous analysis of sixteen energetic nitro compounds and their degradation products in groundwaters and surface waters by ultra-high-performance liquid chromatography","authors":"Alen Albreht ,&nbsp;Anja Koroša","doi":"10.1016/j.enceco.2025.04.002","DOIUrl":"10.1016/j.enceco.2025.04.002","url":null,"abstract":"<div><div>An analytical method based on ultra-high-performance liquid chromatography with photodiode array detection for the simultaneous separation and determination of nitroaromatics, nitramines, and nitrate esters in aqueous environmental samples was developed. The modification of a preconcentration step based on solid phase extraction proved crucial for avoiding the frequently occurring measurement bias. The fully validated method has a range spanning four orders of magnitude and enables a precise, accurate, and sensitive determination of species down to a concentration of 0.3 μg/L. The method's applicability was demonstrated by quantifying energetic materials and their degradation products in nine groundwater and nine surface water samples, obtained from a single sampling campaign of Slovenian aquifers. Three contaminants, namely 1,3-dinitrobenzene (1,3-DNB), 2-amino-2,6-dinitrotoluene (2A-DNT), or pentaerythritol tetranitrate (PETN), were detected in 5 of the 18 samples. The measured concentrations of nitro compounds were low, with the exception of the Mura River, where PETN exceeded 1 μg/L. The anthropogenic origin of the pollution observed for this part of Europe must be linked to the (un)exploded ordnance from both World Wars. However, the presence of 1,3-DNB and 2A-DNT in the Pivka River is also likely to be associated with regular military activities in the area.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 753-761"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CdS nanoparticles may disrupt nitrogen and carbon metabolism in spinach (Spinacia oleracea L.) through different exposure pathways","authors":"Hameed Ullah ,&nbsp;Zheng Wang ,&nbsp;Weihan Xu ,&nbsp;Wenjing Wang ,&nbsp;Yanqing Sheng","doi":"10.1016/j.enceco.2025.04.003","DOIUrl":"10.1016/j.enceco.2025.04.003","url":null,"abstract":"<div><div>Cadmium (Cd) contamination is a significant global environmental issue due to its toxic effects on plant and human health. However, the specific impacts of cadmium sulfide nanoparticles (CdS NPs) on plants, including the underlying molecular mechanisms, toxicity, uptake, and accumulation, remain poorly understood. This study explored the influence of CdS NPs on spinach plants by combining phenotypic and metabolomics analyses. Spinach plants were exposed to CdS NPs (0.005, 0.01, 0.2, 0.4, and 1 mg/L) and Cd ions (0.1 mg/L) through foliar and root for three weeks. Results indicated that root exposure had a more pronounced impact on biomass, plant height, leaf structure, and chlorophyll content than foliar exposure. Cd and CdS NPs uptake in root and shoot were confirmed through Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Energy-Dispersive X-ray Spectroscopy (EDS), respectively and/or jointly. Metabolomics analysis revealed that CdS NPs altered nitrogen metabolism, carbon metabolism, tyrosine metabolism, and isoquinoline alkaloid biosynthesis, which are crucial for plant growth, development, and survival. These findings enhance comprehension of the intrinsic phenotypic and metabolic alterations induced by CdS NPs in spinach plants.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 741-752"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effects of Mg and Fe-modified bimetallic biochar for immobilization of As and Cd in agricultural soils","authors":"Farhan Nabi ,&nbsp;Rakhwe Kama ,&nbsp;Sumbal Sajid ,&nbsp;Muslim Qadir ,&nbsp;Razia Kanwal ,&nbsp;Fareed Uddin Memon ,&nbsp;Chongjian Ma ,&nbsp;Huashou Li","doi":"10.1016/j.enceco.2025.05.016","DOIUrl":"10.1016/j.enceco.2025.05.016","url":null,"abstract":"<div><div>Arsenic (As) and cadmium (Cd) are persistent heavy metals commonly found in agricultural environments, where they pose a serious risk due to their high potential for bioaccumulation in the food chain. Therefore, effective management through advanced agricultural practices is crucial to minimize their presence and immobilize these contaminants in soil. In pursuit of this goal, we conducted a study to evaluate the potential of biochar (BC) and modified BC enriched with magnesium (Mg) and iron (Fe) for the adsorption of As and Cd in contaminated agricultural soils. We synthesized rice straw-derived BC, Mg-modified BC (Mg-BC), Fe-modified BC (Fe-BC), and a bimetallic BC (Bi-BC), incorporating both Fe and Mg. Following synthesis, these BC were applied to contaminated soils to assess changes in soil physicochemical properties, the immobilization of As and Cd, and the uptake of these metals by <em>Ipomoea aquatica</em> (commonly known as water spinach). The BC were characterized using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD), which revealed notable structural and compositional changes. Characterization confirmed the successful incorporation of Mg and Fe into the Mg-BC, Fe-BC, and Bi-BC samples. Application of the modified BC significantly improved several soil parameters, including pH (5.7–7.8), cation exchange properties (7.4–11 cmol⁺.kg⁻¹), organic matter (2.1–4.8 %), water holding capacity (18.9–24.0 %), redox potential (204.6–273.3 mV). Enzyme activities, including dehydrogenase, alkaline phosphatase, β-glucosidase, and urease activity increased by 41.1 %, 61.2 %, 58.5 %, and 97.4 %, respectively, in Bi-BC treated soils compared to CK. Furthermore, the application of Bi-BC reduced soil Cd and As(III) concentrations by 59.0 % and 60.0 %, respectively, and decreased their accumulation in the edible parts of water spinach by 71.31 % and 82.5 %. This not only enhanced plant growth but also significantly reduced the bioavailability of these toxic metals. These findings indicate that Bi-BC is more effective than BC, Mg-BC, and Fe-BC in immobilizing Cd and As, leading to improved soil quality. The synergistic effects of Mg and Fe modifications present a sustainable and efficient strategy for remediating soils co-contaminated with As and Cd.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 1059-1071"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative study on the degradation of ciprofloxacin in wastewater by iron-visible bismuth vanadate and iron-activated carbon systems: Mechanisms, efficiency, and ecotoxicity assessment","authors":"Sumita,&nbsp;Jibran Ali Ghumro,&nbsp;Sadou Barry,&nbsp;Cong Li,&nbsp;Xinyu Wei,&nbsp;Jieming Yuan","doi":"10.1016/j.enceco.2025.05.010","DOIUrl":"10.1016/j.enceco.2025.05.010","url":null,"abstract":"<div><div>This study investigates the activation mechanisms of hydrogen peroxide by iron-visible bismuth vanadate (Fe²⁺/H₂O₂/BiVO₄/Vis) and iron-activated carbon (Fe²⁺/H₂O₂/AC) for ciprofloxacin (CIP) degradation. The Fe²⁺/H₂O₂/BiVO₄/Vis system achieved 99.8 % removal efficiency within 30 min at pH 2, while the Fe²⁺/H₂O₂/AC system demonstrated 99 % efficiency at pH 4. The optimum conditions were determined to be 25 mol/L H₂O₂ and 1.0 g/L catalyst dosage at pH 2 for the BiVO₄ system, and 200 mol/L H₂O₂ and 0.5 g/L catalyst dosage at pH 4 for the AC system. Scavenger experiments revealed that h⁺ (non-radical holes) and ^•O₂⁻ were dominant in the BiVO₄ system, while ^•OH and ¹O₂ were primary in the AC system. Liquid chromatography high-resolution mass spectrometry identified by-products, confirming decarboxylation and piperazine ring opening as the primary degradation mechanisms. The electrical energy per order of magnitude (EEO) of the Fe²⁺/H₂O₂/BiVO₄/Vis system was 210 kWh·m⁻³ in 30 min. Ecotoxicity tests indicated that the degradation products are less harmful to aquatic organisms. Kinetic analysis revealed that the degradation process follows pseudo-second-order kinetics (R² = 0.93), while adsorption isotherms were best described by the Langmuir model (R² = 0.97). Both systems maintained over 90 % efficiency through five consecutive treatment cycles, demonstrating good stability and offering an effective alternative for treating contaminated wastewater.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 1072-1084"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transport, transformation, and ecological impacts of brominated flame retardants in soils: A comprehensive review","authors":"Jia Zhang,&nbsp;Dan Li,&nbsp;Ying Yuan,&nbsp;Kunlong Hui,&nbsp;Wenbing Tan","doi":"10.1016/j.enceco.2025.05.024","DOIUrl":"10.1016/j.enceco.2025.05.024","url":null,"abstract":"<div><div>Brominated flame retardants (BFRs) have become significant contaminants of emerging concern (CECs), resulting in detrimental effects on soil health, human health, and ecosystem sustainability. Their environmental impacts have spurred extensive research into environmental chemistry and ecotoxicology. Despite the widespread detection of both BFRs and Novel Brominated Flame Retardants (NBFRs) in soils, there are few assessments of the environmental behavior and fate of the BFRs. Therefore, this review comprehensively identifies the sources, distribution, transport, transformation, ecotoxicological effects, and remediation strategies of BFRs in soils. Principal findings indicate that adsorption-desorption, mostly influenced by soil organic matter, controls the mobility and transformation of BFRs. Photolysis dominates surface soils, while aerobic and anaerobic biodegradation predominate in subsurface layers. The main factors influencing the bioavailability of BFRs are shed light on in this review. These factors such as the physicochemical properties of BFRs, soil characteristics, and combined pollution are specifically discussed. Moreover, the development, physiological, and biochemical responses of soil organisms to exposure to the BFRs are summarized. Single strategies for addressing BFRs have certain limitations. Urgent actions are needed to focus on environmental behavior and remediation strategies under the “One Health” framework to enrich research gap areas of BFRs, NBFRs, and transformation products.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 1142-1157"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pollution and health risk assessment of heavy metals in surface water of the industrial region in Gazipur, Bangladesh","authors":"Nur-E-Jannat Preonty ,&nbsp;Md. Nahid Hassan ,&nbsp;A.H.M. Selim Reza ,&nbsp;Md. Ishtiak Ahmed Rasel ,&nbsp;Md. Mahibi Alom Mahim ,&nbsp;Mst. Fetama Tuj Jannat","doi":"10.1016/j.enceco.2025.02.014","DOIUrl":"10.1016/j.enceco.2025.02.014","url":null,"abstract":"<div><div>Heavy metal contamination in surface water poses significant health and environmental risks, especially in industrial regions. This study evaluates heavy metal pollution and associated health hazards in the Basan Industrial Area, Gazipur, Bangladesh. A total of 30 surface water samples were analyzed for cadmium (Cd), lead (Pb), nickel (Ni), chromium (Cr), zinc (Zn), manganese (Mn), copper (Cu), and iron (Fe). Pollution indices, including the Heavy Metal Pollution Index (HPI), Heavy Metal Evaluation Index (HEI), and Degree of Contamination (Cd), classified the water as severely polluted, with Cd, Pb, Ni, and Cr exceeding WHO standards. Health risk assessments show that children face greater non-carcinogenic and carcinogenic risks than adults, with ingestion being the primary exposure route. Health risk assessments revealed that both carcinogenic and non-carcinogenic risks are significant, with children being more vulnerable than adults. The total hazard quotient (HQ) for ingestion exceeded the safe limit, particularly for Cd (2.16–6.89), Cr (2.59–4.48), and Pb (0.37–13.98) in children. Dermal exposure risks were lower, but still exceeded safety thresholds for children in several locations. The total hazard quotient values for ingestion exceeded the safe threshold, particularly for Cd, Cr, and Pb, posing serious risks such as kidney damage, neurological disorders, and increased cancer probability. Health risk assessments revealed that both carcinogenic and non-carcinogenic risks are significant, with children being more vulnerable than adults. Multivariate statistical analyses- correlation matrix, principal component analysis, and cluster analysis identified industrial effluents as the dominant pollution source, with heavy metal concentrations correlating with industrial discharges. The findings highlight the urgent need for effective wastewater treatment, stricter environmental regulations, and sustainable water management strategies to mitigate contamination risks. Addressing heavy metal pollution in industrialized regions of Bangladesh is essential for protecting public health and ensuring the long-term sustainability of water resources.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 527-538"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemically functionalized Eggs capsules of Sea Snail (ess) banded dye-murex for bioremediation applications","authors":"Marilena Donnaloia ,&nbsp;Francesco De Mastro ,&nbsp;Carlo Porfido ,&nbsp;Maria Michela Giangregorio ,&nbsp;Roberto Terzano ,&nbsp;Gennaro Brunetti ,&nbsp;Danilo Vona","doi":"10.1016/j.enceco.2025.03.009","DOIUrl":"10.1016/j.enceco.2025.03.009","url":null,"abstract":"<div><div>among materials proposed in literature to remediate the environment, biohybrid composites at the interface between material science, chemistry and biology are the most promising. In this paper, we first contemplate the use of porous capsules, released by marine murex snails after eggs hatching, as a natural matrix capable of adsorbing organic pollutants. This study starts to investigate chemical and morphological features of this envisaging, unexplored protein material. Then, the chemical topography of egg capsules has been potentiated <em>via</em> a surface decoration with the polyphenol gallic acid, leading to enhance the bioremediation potential of the final biohybrid material. This moiety helped to give a huge activation of the adsorption towards a specific organic pollutant: the drug Tetracycline. The bioorganic methodology begins with bioconjugation <em>via</em> direct targeting of the exposed Lysine residues with polyphenol moieties. The material was morphologically investigated <em>via</em> high-resolution X-ray micro-computed tomography (HR X-ray μ-CT), and characterized using Raman spectroscopy, Fourier Transformed Infrared-attenuated total reflectance (FTIR-ATR), micro-IR, elemental, and BET analysis, after the bioorganic decoration. For the <em>in vitro</em> environmental remediation test, Tetracycline was chosen as a model drug molecule, and the specific adsorption was tested concerning the mass of the investigated material, different pH conditions (considering limit values), till evaluating the recycle of the material. The functionalization efficiently sparked the properties of the starting material, leading to an increase in the biosorption of the model urban pharmaceutical pollutant Tetracycline. Compared to the natural material, the functionalized matrix showed a sorbing capacity 12.5 times higher, leading to the sorption of about 25 mmol of Tetracycline per g of sorbent. In addition, the functionalized material remained active up to 5 sorption cycles. This outcome represents an achievement made from the combination of natural materials and Nature inspired molecular moieties to act as efficient platforms for self-cleaning, leading to environmental remediation.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 644-654"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoplastics in aquatic environments: The hidden impact of aging on fate and toxicity","authors":"Rega Permana ,&nbsp;Swaroop Chakraborty ,&nbsp;Eugenia Valsami-Jones","doi":"10.1016/j.enceco.2025.02.007","DOIUrl":"10.1016/j.enceco.2025.02.007","url":null,"abstract":"<div><div>The increasing release of plastic waste into aquatic ecosystems has led to the widespread occurrence of secondary microplastics (MPs) and nanoplastics (NPs), raising significant environmental and health concerns. While the toxicological effects of pristine NPs have been well documented, the role of aging—through processes such as ultraviolet (UV) photoaging and chemical oxidation—remains largely understudied. Aging fundamentally alters the physicochemical properties of NPs, potentially affecting their aggregation behaviour, eco-corona formation, and interactions with natural organic matter (NOM) and ions in aquatic environments. These changes may drastically shift the bioavailability and toxicity of NPs, making current assessments based on pristine particles environmentally unrealistic. This review synthesises the existing literature on NP aging, exploring how it affects their fate, transport, and toxicological impact on aquatic organisms. By identifying key knowledge gaps and highlighting the need for studies that account for environmental aging, this paper offers a roadmap for future research in NP environmental risk assessment. Understanding the dynamic transformations of NPs post-aging is crucial for developing more accurate models of their long-term ecological and human health impacts.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 429-444"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorinated liquid crystal monomer (FLCM) induces kidney dysfunction by disrupting PPARα-mediated fatty acid oxidation: In vivo, in vitro, and in silico assays","authors":"Lin Peng ,&nbsp;Zenghua Qi ,&nbsp;Li Xiang ,&nbsp;Wei Wang ,&nbsp;Guodong Cao ,&nbsp;Yi Ru ,&nbsp;Xiaoxiao Wang ,&nbsp;Siyi Lin ,&nbsp;Zhu Yang ,&nbsp;Hong Yan ,&nbsp;Zongwei Cai","doi":"10.1016/j.enceco.2024.12.002","DOIUrl":"10.1016/j.enceco.2024.12.002","url":null,"abstract":"<div><div>Fluorinated liquid crystal monomers (FLCMs) are ubiquitous in our daily life as being the units of liquid crystal displays, yet their toxicological impacts remain largely unexplored. Herein, this study presents a comprehensive investigation into the hazardous effects of 3,4-difluoro-4′-(trans-4-ethylcyclohexyl)-biphenyl (DFECB), a representative biphenyl FLCM, using <em>in vivo</em>, <em>in vitro</em>, and <em>in silico</em> approaches. Mice exposed to human-relevant concentrations of DFECB for 30 days exhibited renal dysfunction, characterized by interstitial inflammation, glomerular morphological changes and metabolic disorders. Metabolomic profiling revealed inhibited fatty acid <em>β</em>-oxidation as a key factor in renal impairment, correlating with significant downregulation of peroxisome proliferator-activated receptor <em>α</em> (PPAR<em>α</em>). <em>In vitro</em> assays demonstrated DFECB-induced cytotoxicity, oxidative stress, inflammation and energy deficit in renal cells. Importantly, pretreatment with the PPAR<em>α</em> agonist mitigated the adverse effects of DFECB, underscoring the central role of PPAR<em>α</em> in DFECB-induced nephrotoxicity. Molecular docking simulations elucidated strong halogen and hydrophobic interactions between DFECB and PPAR<em>α</em>, providing mechanistic insights. Collectively, these results suggested that DFECB could act as a disruptor of the PPAR<em>α-</em>mediated fatty acid metabolism pathway, leading to renal dysfunction. This study highlights the potential health risks associated with FLCMs and emphasizes the need for their scientific regulation and further toxicological investigation.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 192-200"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution two-dimensional mapping of arsenic concentration in soil-water micro-interfaces with diffusive gradients in thin films","authors":"Xitong Li,&nbsp;Jiahui Zuo,&nbsp;Chuangchuang Zhang,&nbsp;Tieliang Zhang,&nbsp;Zeying He,&nbsp;Qiwen Zhou,&nbsp;Yujie Zhao,&nbsp;Wenjng Liu","doi":"10.1016/j.enceco.2024.12.006","DOIUrl":"10.1016/j.enceco.2024.12.006","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-TiO₂) 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/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.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 211-220"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}