Chemosphere最新文献

{"title":"Agriculturally relevant pesticide exposure scenario induces early-life lipid metabolism disruption and physiological stress in Caiman latirostris","authors":"Camila F. Chacón,&nbsp;María V. Parachú Marcó,&nbsp;Fernanda M. Rodríguez,&nbsp;Ayelén N. Amweg,&nbsp;Pablo A. Siroski,&nbsp;Gisela L. Poletta","doi":"10.1016/j.chemosphere.2026.145075","DOIUrl":"10.1016/j.chemosphere.2026.145075","url":null,"abstract":"<div><div>Pesticide use in extensive agriculture generates complex exposures for wildlife, however, early-life effects in reptiles remain underexplored. In this study, we evaluated whether embryonic exposure at manufacturer-recommended concentration for field use: glyphosate (GLY at 1 and 2%), 2,4-D (at 0.06 and 0.12%), chlorantraniliprole (CAP at 0.015 and 0.03%), imidacloprid (IMI at 0.1 at 0.2%) and three mixtures at the lowest concentrations (M1: GLY+2,4-D; M2: CAP + IMI; M3: M1+M2) disrupt lipid metabolism, lipoperoxidation and corticosterone levels in <em>Caiman latirostris</em> hatchlings. Hatching success declined under 2,4-D 0.06%, CAP 0.03%, and IMI 0.2%. Residual yolk showed alterations in polyunsaturated fatty acids, together with yolk-cholesterol and <em>α</em>-tocopherol depletion, particularly under CAP 0.03% and in the complex mixtures M1, M2, and M3. Changes in plasma lipid profiles, hepatic aminotransferase activities as well as alteration of NADPH-producing gene expression in blood were observed in M2 and M3. Higher lipoperoxidation levels were observed at the highest concentration across single compounds and in M1 and M3; whereas corticosterone increased in 2,4-D 0.12%. These findings demonstrate that early life stages of caimans are highly sensitive to these xenobiotics, affecting lipid metabolism and associated physiological processes. Moreover, mixtures induced stronger and more complex responses than single compounds, leading to metabolic disruption during early development. Our findings highlight the importance of evaluating realistic agrochemical mixtures to better assess their ecological risk.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145075"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148908176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemical background of oligotrophic peatlands in the northern taiga (European Northeast): Assessing the contribution of endogenous processes and wildfires to potentially toxic elements accumulation","authors":"Roman Vasilevich,&nbsp;Andrey Panjukov,&nbsp;Dmitriy Gabov,&nbsp;Oleg Kuznetsov","doi":"10.1016/j.chemosphere.2026.145079","DOIUrl":"10.1016/j.chemosphere.2026.145079","url":null,"abstract":"<div><div>The present study is devoted to the vertical distribution of potentially toxic elements (PTEs) in the peat profiles of the northern taiga, which depend on endogenous processes, external inputs, geochemical barriers, and are also influenced by fires. Based on the obtained results, elements were distributed within the soil profile into two distinct groups. The first group predominantly concentrates in the lower horizons and includes zinc (Zn), nickel (Ni), cobalt (Co), manganese (Mn), iron (Fe), chromium (Cr), vanadium (V), titanium (Ti), and magnesium (Mg). The second group is primarily found in the peat layer and comprises mercury (Hg), copper (Cu), lead (Pb), cadmium (Cd), Zn, Ni, Mn, aluminum (Al), V, barium (Ba), strontium (Sr), calcium (Ca), and arsenic (As). The plant biomass, in particular that of pine and birch wood, plays a significant role in the deposition of PTEs. The key geochemical barriers that immobilize PTEs include humic acids, sulfur-containing compounds, and iron oxides and hydroxides, which form stable associations with these elements under reducing conditions. Special attention is paid to the fire events: ash resulting from fires is a source of alkaline and alkaline earth elements (potassium (K), Ca), as well as Mn, V, Ni, Cd, Pb, and Cu. Statistically significant spatial differences in PTE content were observed between the studied soil pits, likely attributable to meteorological factors influencing the atmospheric transport of elements from fires. Manganese exhibits high mobility and a downward distribution pattern, while Cu and Pb remain associated with and immobilized by organic matter. Overall, the study highlights the complex, multifactorial nature of the formation of the geochemical structure of peat ecosystems.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145079"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148914632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of mineralogy on coal dust toxicity: potassium as a proxy for illite and surface iron–driven oxidative stress","authors":"Yong Song,&nbsp;Seiha Yen,&nbsp;Katherine Southam,&nbsp;B. Basil Beamish,&nbsp;Graeme R. Zosky","doi":"10.1016/j.chemosphere.2026.145090","DOIUrl":"10.1016/j.chemosphere.2026.145090","url":null,"abstract":"<div><div>Epidemiological evidence suggests that the chemical composition of coal dust influences its toxicity, although the underlying mechanisms remain unclear. We previously identified potassium content as a strong predictor of lung cell responses, likely reflecting the presence of potassium alumino-silicate minerals. In this study, we investigated the role of potassium and potassium alumino-silicates in coal dust-induced cellular responses and explored the mechanisms driving these effects. Forty-four coal samples and four potassium alumino-silicate minerals were assessed for their effects on cytotoxicity, cell proliferation, and inflammatory responses in epithelial cells and macrophages. Surface-associated iron was quantified, and intracellular reactive oxygen species (ROS) generation was measured to assess oxidative stress mechanisms. Our data showed that potassium oxide alone induced only minor cytotoxic effects, whereas specific potassium alumino-silicate minerals, particularly illite, elicited strong cytotoxic and pro-inflammatory responses. Higher potassium content in coal dust was associated with reduced epithelial cell proliferation. Illite exhibited elevated surface-associated iron and induced greater ROS production compared with muscovite and orthoclase. Increasing surface iron on these less reactive minerals enhanced inflammatory responses but did not replicate the cytotoxic effects of illite. These findings demonstrate that potassium alone does not directly drive coal dust toxicity, but instead reflects the presence of reactive mineral phases. Mineral-specific surface properties, particularly those related to iron-mediated oxidative stress, play a central role in determining biological responses to coal dust.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145090"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148922113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thiol derivatives and CdTe quantum dots as larvicides and biomarkers against the yellow fever mosquito Aedes aegypti","authors":"Denilson V. Freitas,&nbsp;Camila S. Lira-Pimentel,&nbsp;Camila C.L. Arruda,&nbsp;Júlio C.R.O.F. Aguiar,&nbsp;Dayane S. Marques,&nbsp;Daniela M.A.F. Navarro,&nbsp;Marcelo Navarro","doi":"10.1016/j.chemosphere.2026.145080","DOIUrl":"10.1016/j.chemosphere.2026.145080","url":null,"abstract":"<div><div>The increasing resistance of the yellow fever mosquito, <em>Aedes aegypti</em>, to conventional larvicides underscores the critical need for novel vector control strategies. This work investigates the intrinsic larvicidal activity of free-thiol derivatives (3-mercaptopropionic acid (MPA) and cysteamine (CA)) and evaluates how their specific functional groups (carboxylic acid and amine) govern molecular interactions within the larval digestive system. The free MPA and CA compounds exhibited remarkable larvicidal efficacy against fourth-instar (L₄) larvae, presenting LC₅₀ values of 18.34 ± 0.68 mg L⁻¹ and 8.26 ± 0.58 mg L⁻¹, respectively. Ingestion assays revealed that spatial nanoprobe distribution is strictly regulated by the larval intestinal pH gradient and ligand pK_a. While negatively charged CdTe-MPA maintained broad colloidal stability across the midgut, CdTe-CA underwent charge neutralization in the alkaline central midgut, triggering localized colloidal deposition at neutral-to-acidic boundaries. Both probes showed strong affinity for chitinous structures, compromising gut homeostasis. This study provides mechanistic proof of concept that surface-charge tailoring can exploit vector physiology for targeted pest control.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145080"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148889714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response to the letter to the editor entitled “Clarifying source attribution and the scope of health-risk conclusions for rare earth elements in road dust near coal-fired power plants”","authors":"Jovana Roganović,&nbsp;Dubravka Relić,&nbsp;Milana Zarić,&nbsp;Mira Aničić Urošević,&nbsp;Inga Zinicovscaia,&nbsp;Konstantin Ilijević,&nbsp;Nenad M. Zarić","doi":"10.1016/j.chemosphere.2026.145083","DOIUrl":"10.1016/j.chemosphere.2026.145083","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145083"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148963882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three decades of mercury research in the Tapajós River Basin, Brazilian Amazon: Scientific progress, remaining uncertainties, and future challenges","authors":"Lucas Cassulatti dos Santos,&nbsp;Fernando Barbosa Jr","doi":"10.1016/j.chemosphere.2026.145077","DOIUrl":"10.1016/j.chemosphere.2026.145077","url":null,"abstract":"<div><div>Over the past three decades, the Tapajós River Basin, Brazilian Amazon, has become a major setting for investigating chronic environmental mercury (Hg) exposure, predominantly associated with dietary methylmercury (MeHg) intake through fish consumption. This critical review synthesizes Hg research conducted between 1990 and 2026, tracing scientific progress from contamination sources to human exposure, health effects, biological susceptibility, and emerging environmental health challenges. Early studies identified artisanal and small-scale gold mining, the remobilization of legacy Hg through biogeochemical processes, and fish consumption as central components linking environmental Hg sources to human exposure. Subsequent investigations expanded this evidence by examining health effects, biological susceptibility, nutritional interactions, and multiple environmental stressors. Although Hg concentrations in piscivorous fish have remained persistently elevated, biomonitoring studies suggest a gradual decline in Hg exposure in some communities, potentially reflecting changes in dietary patterns, socioeconomic conditions, sampling characteristics, and study locations.</div><div>Despite major advances in characterizing contamination and exposure, less progress has been achieved in understanding long-term health consequences. Most epidemiological studies remain descriptive or cross-sectional, limiting causal inference and characterization of exposure-response relationships. Neurological, sensory, visual, and motor alterations remain the most consistently reported outcomes, yet uncertainties persist regarding causality, individual susceptibility, and mechanisms underlying variability among exposed populations. The contrasting findings of the Faroe Islands and Seychelles longitudinal cohorts illustrate these challenges.</div><div>Recent studies increasingly recognize that Hg toxicity is shaped by complex exposomes involving selenium (Se), co-exposure to lead (Pb) and other contaminants, nutritional transition, infectious diseases, climate change, and social determinants of health. Future progress will require adequately powered longitudinal cohorts, population-specific reference values, biomarkers of exposure, effect and susceptibility, and integration of multi-omics, exposome, and One Health approaches to strengthen causal inference and improve environmental health policies for Amazonian populations.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145077"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148882995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating regional and seasonal variations of PM2.5 and O3 across Malaysia using XGBoost and SHAP-based interpretability","authors":"Emmanuel Yohanna,&nbsp;Hwee San Lim","doi":"10.1016/j.chemosphere.2026.145074","DOIUrl":"10.1016/j.chemosphere.2026.145074","url":null,"abstract":"<div><div>Evaluating regional and seasonal air pollution variability is essential for monitoring tropical environments. This study evaluated regional and seasonal variations in fine particulate matter (PM_2.5) and ground-level ozone (O₃) across five regions of Malaysia using daily atmospheric and meteorological observations from 2018 to 2023 from the Department of Environment (DOE), complemented by ERA5 reanalysis variables (boundary layer height, solar radiation, and cloud cover). Multiple Linear Regression (MLR) and Extreme Gradient Boosting (XGBoost) were compared, while Shapley Additive Explanations (SHAP) were applied to interpret driver importance and nonlinear relationships. Kruskal-Wallis and Dunn post hoc tests identified regional and seasonal differences in both pollutants. PM_2.5 varied spatially with (χ² = 3239.530, <em>p</em> &lt; 0.001) and seasonally (χ² = 477.837, <em>p</em> &lt; 0.001). O₃ varied geographically with (χ² = 2173.607, <em>p</em> &lt; 0.001) and seasonally (χ² = 69.579, <em>p</em> &lt; 0.001). XGBoost outperformed MLR, achieving R² = 0.576 and RMSE = 4.87 μg m⁻³ for PM_2.5, and R² = 0.543 and RMSE = 3.4 ppb for O₃, with skill varying by region and season and increasing to R² = 0.85 when persistence was included. SHAP analysis showed that PM_2.5 variability was associated with combustion-related tracers and meteorological factors, whereas O₃ was more strongly associated with humidity and temperature, with humidity exerting greater influence during the Northeast Monsoon. These suggest that air pollution variability across Malaysia is governed by interactions between emission patterns and meteorological conditions, emphasizing the importance of season-specific evaluation, explainable machine learning, and regional assessment for policy development.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145074"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148868305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transition-metal-decorated 2D γ-graphyne as high-performance adsorbents for heavy metal removal: A DFT study toward descriptor-guided design","authors":"Bunrat Tharat,&nbsp;Pariwut Falun,&nbsp;Lappawat Ngamwongwan,&nbsp;Suwit Suthirakun,&nbsp;Anchalee Junkaew,&nbsp;Piyasan Praserthdam,&nbsp;Supareak Praserthdam","doi":"10.1016/j.chemosphere.2026.145068","DOIUrl":"10.1016/j.chemosphere.2026.145068","url":null,"abstract":"<div><div>Heavy metal (HM) toxicity has become one of the major environmental concerns in recent years. In this study, we investigate the adsorption-based approach for the detection and removal of heavy metal ions (HMIs) from wastewater applications. Density functional theory (DFT) calculations are used to systematically investigate pristine γ-graphyne (γ-GY) and transition-metal-decorated γ-graphyne (TM/γ-GY) as efficient adsorbents for Hg, As, and Pb removal under implicit solvation conditions. Pristine γ-GY exhibits adsorption of Hg, As, and Pb with adsorption energies of −1.17 eV, −2.21 eV, and −3.46 eV, respectively. Transition metal doping enhances adsorption performance via strengthened TM–C interactions, increased electron transfer, enhanced stability, and electronic structure tuning. Re/γ-GY and Os/γ-GY show exceptionally strong adsorption for As and Pb (−4.81 and −4.30 eV, respectively), while Mn/γ-GY offers balanced adsorption for all HMIs. TM doping reduces the γ-GY band gap from 0.37 eV to below 0.15 eV in several systems, enhancing both electrical conductivity and adsorption sensitivity. Sensitivity analysis shows that Re/γ-GY achieves ∼100% sensitivity toward As, while Mn/γ-GY and Os/γ-GY selectively respond to Hg with &gt;90% sensitivity. Adsorption capacity calculations show that pristine γ-GY exhibits a Hg uptake of 1043 mg g⁻¹, while TM doping enhances As and Pb capacities to 237 mg g⁻¹ and 984 mg g⁻¹ on Mn/γ-GY, respectively. Through a descriptor-guided framework incorporating adsorption selectivity, sensitivity, and adsorption capacity, Mn/γ-GY attains the highest overall performance score (0.72), making it the most promising adsorbent for multi-contaminant heavy metal removal.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145068"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148876021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Localized U, Ba and 226Ra geochemical anomaly in river sediments near a documented shale-gas-related waste disposal site","authors":"Alexandre Landry,&nbsp;Samuel Banville,&nbsp;Salah-Eddine El Adlouni,&nbsp;Olivier Clarisse","doi":"10.1016/j.chemosphere.2026.145073","DOIUrl":"10.1016/j.chemosphere.2026.145073","url":null,"abstract":"<div><div>Shale gas activities can release trace elements and naturally occurring radionuclides into aquatic environments, yet the long-term impact of low-intensity contamination events remains poorly constrained. This study investigates a localized geochemical anomaly observed in river sediments collected in 2021 near a documented shale-gas-related spill and waste disposal area in the Kennebecasis River watershed. Sediment cores and associated porewaters were collected to assess the distribution, potential sources, and mobility of uranium (U), barium (Ba), and radium-226 (²²⁶Ra). Results reveal localized enrichment of U and Ba near the disposal site. Elemental and radionuclide activity ratios (²³⁸U/²²⁶Ra, Th/U, Ba/Ca, and ²²⁶Ra/Ca), together with contaminant spatial distributions, are consistent with an anthropogenic source potentially associated with shale-gas-related waste disposal. Early diagenetic processes appear to promote contaminant release into porewaters, whereas transfer to the overlying water column remains limited. Distribution coefficients (Kd) and diffusive flux estimates suggest greater mobility of uranium relative to radium. Present-day diffusive flux estimates indicate limited contaminant removal by molecular diffusion. Assuming that current concentration gradients remained broadly stable through time, diffusion would account for only a few percent of the current contaminant inventory, generally less than 8%, over a 15-year period. This estimate should be regarded as a conceptual scenario rather than a reconstruction of actual attenuation history. These results highlight the value of sediment geochemistry and radionuclide tracers for identifying localized environmental anomalies potentially associated with shale-gas-related activities. Future work should include sediment dating and direct characterization of buried waste materials and associated leachates to strengthen source attribution and constrain links with the documented 2006 event.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145073"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148889749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AI-integrated chemosensing platform for sequential nanomolar detection of Fe3+ and arsenic species via smartphone-assisted machine learning toward rapid portable environmental monitoring","authors":"Upendar Reddy Gandra,&nbsp;Harika Reddy Vallapu Reddy,&nbsp;Praveen B. Managutti,&nbsp;Yarjan Abdul Samad,&nbsp;Shadi W. Hasan","doi":"10.1016/j.chemosphere.2026.145078","DOIUrl":"10.1016/j.chemosphere.2026.145078","url":null,"abstract":"<div><div>The integration of molecular colorimetric sensors with smartphone-assisted image analysis and machine learning has emerged as a next-generation sensing paradigm for environmental diagnostics. Herein, we report an artificial intelligence (AI)-integrated chemosensing platform based on a norbornene-appended rhodamine derivative (RhB-NBE) for the sequential monitoring of Fe³⁺ and arsenic species [As(V)/As(III))] in aqueous media. The probe was synthesized through a Schiff base condensation reaction and fully characterized using NMR, X-ray, and other spectroscopic techniques. RhB-NBE exhibited highly selective and instantaneous recognition of Fe³⁺ over competing metal ions, including Fe²⁺, through a spirolactam ring-opening mechanism that generated a discrete colorimetric response. The resulting RhB-NBE + Fe³⁺ ensemble served as a secondary sensing platform for arsenite and arsenate via a cation-displacement process, producing a visible color transition from pink to colorless with a low detection limit of 2 nM (below the World Health Organization critical limit). Practical applicability was demonstrated using portable paper-based sensing strips, and successful quantification of arsenic species in environmental water samples with excellent recovery values. Despite the rapid advancement of AI-assisted chemical sensing, integration of machine learning with colorimetric arsenic detection remains largely unexplored due to challenges in sensor reproducibility, image standardization, and reliable concentration classification. Herein, we combine a selective colorimetric chemosensor with AI-based image analytics for rapid field monitoring. Smartphone images were analyzed using GNB, SVM, and CNN models trained on 1000 RGB datasets; SVM achieved 97.0% accuracy for equipment-free arsenic screening.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145078"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148893236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}