地球科学最新文献

{"title":"Identifying a Pattern of Predictable Decadal North Pacific SST Variability in Historical Observations","authors":"Emily M. Gordon,&nbsp;Noah S. Diffenbaugh","doi":"10.1029/2024GL112729","DOIUrl":"https://doi.org/10.1029/2024GL112729","url":null,"abstract":"<p>Improving predictions of decadal climate variability is critical for reducing uncertainty in near-term climate change. Here we investigate the potential to improve prediction skill in the North Pacific by identifying predictable patterns of sea surface temperatures (SSTs) in climate simulations, and then applying them to observations. A convolutional neural network (CNN) is first trained to predict basin-wide SSTs in the North Pacific on 1–5 year time-scales in nine global climate models (GCMs), and a pattern of high skill is identified from the GCM data. This pattern of high skill learned from GCMs is then skillfully predicted by the CNN when given observations as inputs. The identified pattern is notably not the Pacific Decadal Oscillation, and instead corresponds to basinwide warming and cooling focused in the North Pacific Gyre. We conclude that investigating the mechanisms that contribute to predictability (rather than variability) is an effective avenue for improving near-term climate predictions.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 5","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112729","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Predicted Liquid Fraction and Multiple Ice-Phase Categories on the Simulation of Hail in the Predicted Particle Properties (P3) Microphysics Scheme","authors":"Jason A. Milbrandt,&nbsp;Hugh Morrison,&nbsp;Mélissa Cholette","doi":"10.1029/2024MS004404","DOIUrl":"https://doi.org/10.1029/2024MS004404","url":null,"abstract":"<p>Since its inception in 2015, the Predicted Particle Properties (P3) bulk microphysics scheme has undergone several major developments. Ice is now represented by a user-specified number of freely-evolving (non-prescribed) categories; the liquid fraction of particles is predicted, thereby allowing for mixed-phase particles and improved process rates; and the scheme is triple-moment, which allows the size spectral width to vary independently. As such, P3 is now capable of representing key properties and microphysical processes that are important for hail. In this study, the impacts of some new capabilities of P3 on the simulation of hail amounts and sizes are examined in the context of idealized, high-resolution (200-m isotropic grid spacing) hailstorm simulations using a cloud-resolving model. Sensitivity tests are conducted to examine the impacts of (a) the predicted liquid fraction, and (b) the number of generic ice-phase categories (varied between one and four). Predicted liquid fraction leads to a more realistic treatment of melting and shedding, which decreases the mean ice (hail) sizes during melting compared to the original P3 scheme. In contrast, with an increasing number of ice-phase categories, the problem of property dilution is mitigated, ultimately resulting in greater quantities of hail and larger sizes reaching the surface. It is argued that the latest version of the P3 scheme is now capable of realistically representing the major microphysical processes involved in the initiation, growth, and decay of hail.</p>","PeriodicalId":14881,"journal":{"name":"Journal of Advances in Modeling Earth Systems","volume":"17 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024MS004404","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface to the Special Section on Substorm Research","authors":"Xu-Zhi Zhou,&nbsp;David G. Sibeck,&nbsp;Larry R. Lyons,&nbsp;Akimasa Ieda,&nbsp;Zuyin Pu","doi":"10.1029/2025JA033859","DOIUrl":"https://doi.org/10.1029/2025JA033859","url":null,"abstract":"<p>During the week of 16–20 October 2023, the 15th International Conference on Substorms (ICS-15) was held in the city of Deqing, on the scenic foothill of Mount Mogan in Zhejiang, China. Nearly 100 scientists around the world participated in the meeting, either in-person or online. The conference featured 59 oral presentations, including four 50-min tutorial lectures, and 14 poster presentations. Following the convention of the ICS conference series, participants were invited to submit their studies to a special collection of papers. Submissions from the broader space physics community, even if not participating in the conference, were also encouraged. All the articles in the special collection have undergone a rigorous peer-review process before their publication in either <i>Journal of Geophysical Research Space Physics</i> or <i>Geophysical Research Letters</i>.</p><p>This collection, like the conference itself, covers a wide spectrum of topics related to substorm dynamics. There are articles discussing the enduring question of substorm event sequence and triggering mechanisms, which also involve the identification of substorms from various aspects. The roles of meso-scale flows and associated electromagnetic structures in the substorm dynamics constitute another topic of broad interest, which also contributes to the coupling between magnetotail and ionosphere/thermosphere. Another interesting topic is the consequence of substorm injections in the inner magnetosphere, including the excitation of plasma waves and the acceleration of radiation belt electrons. Finally, there are a few articles focusing on geomagnetic storms and their relationship with substorms, and a few articles on subauroral physics related to STEVE (Strong Thermal Emission Velocity Enhancement).</p><p>While it is still challenging to reach a consensus on every aspect of substorm research, we believe that the advancements in observational capabilities have provided unprecedented opportunities for us to study the substorm-associated phenomena across multiple scales. Many studies in this collection utilize data from multiple sources, from in-situ spacecraft observations to ground-based auroral imagers, magnetometers and radar networks, to refine current models and improve our understanding of the nature of substorms.</p><p>Finally, we would like to thank the conference organizers, the Chinese Society of Space Research and Peking University, for their support to make the ICS-15 meeting possible. We are also grateful to all the meeting attendees for their contributions and lively discussions throughout the meeting, and to the AGU editors, editorial staffs, reviewers and authors who made this collection a reality.</p>","PeriodicalId":15894,"journal":{"name":"Journal of Geophysical Research: Space Physics","volume":"130 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025JA033859","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and Analysis of a Global Refractive Index of Water Data Layer for Spaceborne and Airborne Bathymetric Lidar","authors":"James T. Dietrich,&nbsp;Christopher E. Parrish","doi":"10.1029/2024EA004106","DOIUrl":"https://doi.org/10.1029/2024EA004106","url":null,"abstract":"<p>After over a half-century of development, bathymetric lidar is a mature and widely used technology for mapping the littoral zone in support of nautical charting, benthic habitat assessment, inundation modeling and other applications. In 2018, bathymetric lidar transitioned from a purely airborne technology to also a spaceborne capability with the launch of NASA's ICESat-2 satellite. An important aspect of obtaining accurate seafloor elevations and horizontal coordinates in bathymetric lidar is refraction correction, which corrects for the change in the speed and direction of the laser at the air-water interface. Unfortunately, data on the refractive index of seawater needed for correction are largely lacking, especially over global extents, which are required for ICESat-2 bathymetry. This study developed and evaluated a new global refractive index of water data layer. A two-phased sensitivity analysis was conducted to investigate how systematic and random uncertainties in the refractive index layers impact bathymetric lidar uncertainty. We then developed the global refractive index of water layer using global marine data sets and evaluated it using a combination of Argo Float data and in situ refractometer measurements. The results provide a strong indication of the usefulness of the global refractive index layer, which is currently being implanted into the workflow for generating a new ICESat-2 bathymetric data set (ATL24). To benefit other studies, the global refractive index layer is publicly available. Future improvements are possible, leveraging crowd-sourced data collection to continually improve the spatial resolution and nearshore accuracy of the refractive index data set.</p>","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024EA004106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Human-induced eutrophication Alters mercury accumulation and speciation in sediments: A comparative analysis of Dianchi and Fuxian Lake, Southwestern China","authors":"Ke Zhang ,&nbsp;Ying Li ,&nbsp;Haiquan Yang","doi":"10.1016/j.apgeochem.2025.106320","DOIUrl":"10.1016/j.apgeochem.2025.106320","url":null,"abstract":"<div><div>Lake sediments have served as essential reservoirs and sinks for mercury (Hg), providing critical historical records of Hg deposition. However, insufficient research on the accumulation patterns of sedimentary Hg in lakes with diverse trophic states and depositional environments has posed a significant barrier to advancing our understanding of long-term environmental impacts of Hg deposition. This study examined historical trends in Hg concentrations and changes in Hg speciation within sediment cores from two ecologically contrasting lakes on the Yunnan-Guizhou Plateau, China: Dianchi Lake (shallow, hypereutrophic) and Fuxian Lake (deep, oligotrophic). The results showed that Hg concentrations and accumulation rates in all four sediment cores have accelerated since the 1980s, with average Hg concentrations in Dianchi Lake (583 ppb in DC1 and 211 ppb in DC4) significantly higher than those in Fuxian Lake (132 ppb in FX1 and 96 ppb in FX2). Mercury speciation analysis revealed that higher primary productivity in Dianchi Lake favored Hg-organic matter (Hg-OM) complexes, while prolonged anaerobic conditions and lower primary productivity in Fuxian Lake promoted the formation of Hg sulfide (HgS). Strong positive correlations between Hg, total organic carbon (TOC), and total nitrogen (TN) highlighted the pivotal role of organic matter in Hg accumulation and retention. Additionally, C/N and δ¹³C analyses indicated that organic matter in Dianchi Lake originated from a mix of endogenous, exogenous, and anthropogenic sources, whereas it remained primarily endogenous in Fuxian Lake. The synchronous increase in both Hg concentrations and Hg/TOC ratios observed in the DC1 sediment core demonstrated the significant influence of anthropogenic eutrophication on Hg enrichment. In contrast, this effect was less pronounced in the DC4 core, where Hg speciation analysis revealed HgS as the dominant species in surface sediments. These findings highlight the critical role of lake eutrophication and its induced environmental changes in governing Hg speciation and accumulation in lacustrine sediments. This study emphasizes the need to incorporate lake trophic status evaluation and sediment matrix characterization as essential methodological prerequisites when interpreting lacustrine sediment records for reconstructing historical Hg contamination patterns and predicting bioavailability-related ecological risks.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"182 ","pages":"Article 106320"},"PeriodicalIF":3.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous effects of cyclones on households’ welfare: Evidence from Madagascar","authors":"Michael Keller,&nbsp;Francis Mulangu","doi":"10.1016/j.ijdrr.2025.105305","DOIUrl":"10.1016/j.ijdrr.2025.105305","url":null,"abstract":"<div><div>Madagascar is among the most cyclone-prone countries in the world, with frequent and severe weather events posing significant risks to household welfare. This study investigates the impacts of cyclones on household dynamics in Madagascar, with a specific focus on expenditures, food security, and poverty. Employing a comprehensive analytical approach that integrates difference-in-differences, propensity score matching, and proxy parallel trend testing, we exploit a unique dataset derived from two rounds of Madagascar's nationally representative household survey, conducted in 2020 and 2022 covering over 19,000 households across cyclone-affected and unaffected regions. Affected households experienced a substantial 19 % reduction in household per capita expenditure, leading to an 11 % higher likelihood of falling below the poverty line. Food insecurity escalated, evident in a drop of 205 calories per person in daily consumption. Remarkably, households strategically allocated resources towards food expenses against non-food expenditures during crises, reflecting their prioritization in savings behaviour. Using windspeed, our analysis highlights notable spatial heterogeneity between different cyclones and within the same cyclone, where impact magnitude corresponds to cyclone intensity. These findings underscore the urgent need for international collaboration and national action to mitigate the adverse effects of cyclones. The international community should scale up disaster relief funding and invest in resilient infrastructure and early warning systems to honour the commitments made at the COP27 conference to support vulnerable nations like Madagascar. Concurrently, the Government of Madagascar should prioritize expanding social safety nets, improving cyclone preparedness, and targeting aid to households affected by cyclones to promote recovery and resilience.</div></div>","PeriodicalId":13915,"journal":{"name":"International journal of disaster risk reduction","volume":"119 ","pages":"Article 105305"},"PeriodicalIF":4.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A holistic asset-level modelling framework for a comprehensive multi-hazard risk/impact assessment: Insights from the ICARIA project","authors":"Mattia Federico Leone ,&nbsp;Giulio Zuccaro ,&nbsp;Daniela De Gregorio ,&nbsp;Agnese Turchi ,&nbsp;Amanda Tedeschi ,&nbsp;Marianne Büegelmayer-Blaschek ,&nbsp;Athanasios Sfetsos ,&nbsp;Ioannis Zarikos ,&nbsp;Alex de la Cruz Coronas ,&nbsp;Beniamino Russo","doi":"10.1016/j.ijdrr.2025.105319","DOIUrl":"10.1016/j.ijdrr.2025.105319","url":null,"abstract":"<div><div>The frequency and intensity of climate- and weather-related phenomena have significantly increased over the past two decades, with future projections suggesting further escalation due to climate change. Compound events, involving coincident or consecutive hazards, and their cascading effects, often exacerbate the severity of disasters, resulting in greater damage than would result from isolated hazards. However, risk/impact assessments have predominantly used single-hazard approaches, limiting understanding of how multi-hazard interactions affect socio-eco-technological systems.</div><div>This paper presents a comprehensive asset-level modelling framework developed within the EU-funded Horizon Europe project ICARIA. The framework aims to assess risks/impacts and resilience to a wide range of natural phenomena, including droughts, heatwaves, extreme winds, wildfires, floods and landslides, as well as the potential cascading effects due to impacts on interdependent infrastructure systems. It enables the development of multi-hazard scenarios, data harmonisation, and the characterisation of exposure and vulnerability for different categories of elements at risk, particularly critical infrastructures and related services, thereby facilitating the estimation of direct and indirect damage. Furthermore, the framework incorporates coping, adaptive and transformative capacities as key-components of resilience, as well as human behavioural factors, into the modelling process.</div><div>Examples from initial testing of the framework on ICARIA case study regions are introduced to highlight the operational steps for its application, including the identification of reference multi-hazard risk/impact scenarios through event trees, the inventory of relevant modelling data and the interconnection of single hazard/impact models to determine the consequences of complex multi-hazard events on exposed assets and services.</div></div>","PeriodicalId":13915,"journal":{"name":"International journal of disaster risk reduction","volume":"119 ","pages":"Article 105319"},"PeriodicalIF":4.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Equilibrium melting relations at shallow lower mantle P-T conditions probed by the laser-heated diamond anvil cell","authors":"L. Pison Pacynski,&nbsp;E. Gardés,&nbsp;D. Andrault","doi":"10.1007/s00269-025-01312-0","DOIUrl":"10.1007/s00269-025-01312-0","url":null,"abstract":"<div><p>Laser-heated diamond anvil cell (LH-DAC) is needed to investigate melting properties of deep planetary interiors. Interpretation of the melting behavior is however challenging because extreme temperature gradients are inevitable. In this work, we investigate how the peak temperature at the center of the laser spot, from sample solidus to 1000 K above (ΔT), affects the chemical relations between melt and solid residue. We investigate the melting behavior of two possible mantle compositions, pyrolite and chondritic type material, at pressures corresponding to depths of ~ 1000 km and higher (40–73 GPa). Recovered samples are characterized at nanoscale spatial resolution using electron microscopy. Samples tend to show that chemical composition of melts and bridgmanite-melt relations vary largely with peak temperature. With increasing ΔT, the (Mg,Fe) exchange coefficient (K_Fe-Mg^Bg/melt) decreases from 0.29 to 0.11, and SiO₂ contents in melt ([SiO₂]^melt) from 43 to 18 wt%. In addition, we observe that the higher ΔT, the more the liquid is depleted in bridgmanitic-type composition. These experimental features are contrary with those expected from the known melting diagram of typical mantle material. Instead, they are well explained by considering fast solidification of bridgmanite (Bg) at the edge of the molten zone, in disequilibrium conditions. The sample prepared at solidus temperature and for short duration presents a central melt pool of Ca-bearing melt in close contact with Bg and ferropericlase. The degree of partial melting is coherently estimated to 18(2) wt% by two independent observations. This corresponds to pseudo-eutectic conditions where only the third mineral, davemaoite, is exhausted. For a pressure of 40.5 GPa, K_Fe-Mg^Bg/melt and [SiO₂]^melt are found to be 0.29 and 43 wt%, respectively, in good agreement with multi-anvil press experiments. Altogether, this work shows that erroneous solid–liquid chemical relations can arise from samples synthesized at temperatures well above solidus in the LH-DAC.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"52 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial-temporal evolution and driving factors of water-energy-food-ecology coordinated development in the Tarim River Basin","authors":"Junjiao Zhen ,&nbsp;Ying Guo ,&nbsp;Yanfang Wang ,&nbsp;Yulong Li ,&nbsp;Yanjun Shen","doi":"10.1016/j.ejrh.2025.102288","DOIUrl":"10.1016/j.ejrh.2025.102288","url":null,"abstract":"<div><h3>Study region</h3><div>Tarim River Basin (TRB) in the arid northwestern China.</div></div><div><h3>Study focus</h3><div>The TRB is facing escalating tensions among water, energy, food, and the ecological environment (WEFE). This study developed a WEFE evaluation system using an integrated single index quantification-multiple index synthesis-multiple criteria integration approach combined with coupling coordination model to assess the spatial-temporal evolution of WEFE nexus from 2000 to 2020. The obstacle degree model and geographic detector method were applied to reveal the internal and external drivers of these changes.</div></div><div><h3>New hydrological insights for the region</h3><div>The comprehensive development levels of WEFE and its all subsystems indicated an upward trend, with Bayingolin having the highest development level at 0.57. The WEFE coordination level steadily increased but remained at the primary coordination level. Bayingolin has the highest coordination level (0.74), whereas Kashgar exhibited the lowest level at 0.6. Energy production and agricultural water consumption ratio stood out as key internal factors affecting WEFE coordination, with obstacle values of 0.21 and 0.16, respectively. The impacts of external factors like GDP per capita, urbanization level, total regional population and rural disposable income per capita on the WEFE coordination level was increasing. These findings will facilitate to decision-making for the synergistic development of WEFE in the TRB, and hold significant reference value for other arid and water-scarce regions.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102288"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Tunisian clays for their potential application as excipient in pharmaceutical preparations: 2-amino-5-chlorobenzophenone adsorption","authors":"Safa Gamoudi ,&nbsp;Jihene Manai ,&nbsp;Wilfried G. Kanhounnon ,&nbsp;Didilia Ileana Mendoza-Castillo ,&nbsp;Adrián Bonilla-Petriciolet ,&nbsp;Yann Foucaud ,&nbsp;George E. Christidis ,&nbsp;Ezzeddine Srasra ,&nbsp;Michael Badawi","doi":"10.1016/j.clay.2025.107760","DOIUrl":"10.1016/j.clay.2025.107760","url":null,"abstract":"<div><div>The objective of this manuscript was to test the drug-loading and delivery properties of Tunisian clays to demonstrate their potential as low-cost excipients in pharmaceutical formulations. Raw kaolinite, purified smectite, and organophilic smectite were studied for the adsorption and desorption of 2-amino-5-chlorobenzophenone (2A-5BC) as a drug model molecule. The adsorption and desorption properties of these clay samples were investigated under different pH conditions, including those emulating the intestinal and gastric fluids from human body. DFT calculations were performed to characterize the atomic interactions involved in the adsorption mechanism. The adsorption and desorption properties of these clays were correlated with their main physicochemical properties and textural parameters. The maximum 2A-5BC adsorption (<em>i.e.</em>, 48.2 mg/g) was achieved using smectite functionalized with HDTMA. Electrostatic forces and hydrogen bonds played a relevant role during 2A-5BC adsorption. The desorption of 2A-5BC from clay samples was effective at 37 °C and pH similar to the intestinal and gastric fluids, thus reaching desorption efficiencies of up to 93 %. 2A-5BC desorption data were modeled with the Korsmeyer-Peppas equation and the results indicated the presence of a non-Fickian mass transport. Tunisian smectite functionalized with HDTMA presented promising performance and can be considered as a potential excipient in pharmaceutical formulations.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"269 ","pages":"Article 107760"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}