ACS Earth and Space Chemistry最新文献

Chemical Complexity in Planetary Systems 行星系统中的化学复杂性

IF 2.9 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-20 DOI: 10.1021/acsearthspacechem.4c00155

Martin Cordiner*, and , Christopher Bennett,

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Photochemical Stability and Reactivity of Sodium Pyruvate: Implications for Organic Analysis on Ceres 丙酮酸钠的光化学稳定性和反应性：对谷神星上有机物分析的影响

IF 3.4 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-14 DOI: 10.1021/acsearthspacechem.4c00045

J. Weber, E. Czaplinski, Bryana L. Henderson, L. Barge, J. C. Castillo-Rogez, R. Hodyss

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Determination of the Hydroxyl Radical Reaction Rate Constant of Amines in the Aqueous Phase 测定水相中胺的羟基自由基反应速率常数

IF 3.4 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-14 DOI: 10.1021/acsearthspacechem.4c00047

Atta Ullah, Aqeel Afzal, Ho-Jin Lim

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Quartz Crystallinity Characteristics and Their Effects on Shale Gas Reservoir Performance: A Case Study of the Deep Longmaxi Formation Shale in the Sichuan Basin, China 石英结晶度特征及其对页岩气藏性能的影响：中国四川盆地龙马溪深层页岩案例研究

IF 3.4 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-12 DOI: 10.1021/acsearthspacechem.4c00025

Yue Feng, Xianming Xiao, Enze Wang, Dongfeng Hu, Ruobing Liu, Qin Zhou

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Nitrous Acid and Nitric Oxide Emissions from Agricultural Soils in Guangdong Province: Laboratory Measurement and Emission Estimation 广东省农业土壤中的亚硝酸和一氧化氮排放：实验室测量与排放估算

IF 3.4 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-12 DOI: 10.1021/acsearthspacechem.4c00048

Li Huang, Baobin Han, Peng Cheng, Zhilin Tian, Wenda Yang, Ji Ling, Wenbin Ma, Yihang Yu, Yucheng Gong, Yujie Tian, Hui Deng

引用次数: 0

Analysis of Monocarboxylic Acids in the Murchison Meteorite by Sequential Extraction 通过顺序萃取分析默奇森陨石中的单羧酸

IF 3.4 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-11 DOI: 10.1021/acsearthspacechem.4c00007

Koichi Mimura, Rio Yamada, Natsuki Maejima, Kimitaka Kawamura, B. Kunwar, Minako Hashiguchi

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Reduction of HgII by MnII MnII 对 HgII 的还原作用

IF 2.9 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-10 DOI: 10.1021/acsearthspacechem.3c00304

Bhoopesh Mishra*, Maxim I. Boyanov, Kenneth M. Kemner and Edward J. O’Loughlin,

{"title":"Reduction of HgII by MnII","authors":"Bhoopesh Mishra*, Maxim I. Boyanov, Kenneth M. Kemner and Edward J. O’Loughlin, ","doi":"10.1021/acsearthspacechem.3c00304","DOIUrl":"10.1021/acsearthspacechem.3c00304","url":null,"abstract":"The reduction of HgII to HgI or Hg0 can lead to significant changes in Hg toxicity and mobility in the environment. Photochemical reduction is the primary process for the reduction of HgII to Hg0 in sunlit environments; however, dark reduction of HgII can occur via microbial metabolic processes and/or reduction by reduced natural organic matter, FeII mineral phases, FeII sorbed to minerals, or aqueous FeII. Here, we demonstrate a novel HgII reduction pathway involving another environmentally relevant reductant, MnII. Abiotic reduction of HgIIO by MnII was studied as a function of pH and anion environment (perchlorate, sulfate, chloride) using X-ray absorption spectroscopy to characterize the solid-phase Hg and Mn species. At circumneutral pH of 7.5, about 70% of HgII was reduced to elemental Hg0 within 2 h. In contrast, 12 h were needed to achieve the same extent of reduction at pH 6.9. In the presence of sulfate and chloride, HgI species were formed. HgII reduction was initially rapid and coupled with the oxidation of soluble MnII-oxides to insoluble MnIV-oxides, followed by a significantly slower reduction of HgII during the MnII-catalyzed transformation of the MnIV-oxides to hydroxide and oxyhydroxide minerals. The observed reduction of HgII by MnII at circumneutral pH could be an important transformation pathway for environmental Hg, affecting its bioavailability and mobility under mildly reducing conditions.","PeriodicalId":15,"journal":{"name":"ACS Earth and Space Chemistry","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical Conductivity of Subsurface Ocean Analogue Solutions from Molecular Dynamics Simulations 从分子动力学模拟看地下海洋模拟溶液的电导率

IF 2.9 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-08 DOI: 10.1021/acsearthspacechem.3c00345

Catherine A. Psarakis*, Timothy Tizhe Fidelis, Keith B. Chin, Baptiste Journaux, Abby Kavner, Pranab Sarker, Marshall J. Styczinski, Steven D. Vance and Tao Wei,

{"title":"Electrical Conductivity of Subsurface Ocean Analogue Solutions from Molecular Dynamics Simulations","authors":"Catherine A. Psarakis*, Timothy Tizhe Fidelis, Keith B. Chin, Baptiste Journaux, Abby Kavner, Pranab Sarker, Marshall J. Styczinski, Steven D. Vance and Tao Wei, ","doi":"10.1021/acsearthspacechem.3c00345","DOIUrl":"10.1021/acsearthspacechem.3c00345","url":null,"abstract":"Investigating the habitability of ocean worlds is a priority of current and future NASA missions. The Europa Clipper mission will conduct approximately 50 flybys of Jupiter’s moon Europa, returning a detailed portrait of its interior from the synthesis of data from its instrument suite. The magnetometer on board has the capability of decoupling Europa’s induced magnetic field to high precision, and when these data are inverted, the electrical conductivity profile from the electrically conducting subsurface salty ocean may be constrained. To optimize the interpretation of magnetic induction data near ocean worlds and constrain salinity from electrical conductivity, accurate laboratory electrical conductivity data are needed under the conditions expected in their subsurface oceans. At the high-pressure, low-temperature (HPLT) conditions of icy worlds, comprehensive conductivity data sets are sparse or absent from either laboratory data or simulations. We conducted molecular dynamics simulations of candidate ocean compositions of aqueous NaCl under HPLT conditions at multiple concentrations. Our results predict electrical conductivity as a function of temperature, pressure, and composition, showing a decrease in conductivity as the pressure increases deeper into the interior of an icy moon. These data can guide laboratory experiments at conditions relevant to icy moons and can be used in tandem to forward-model the magnetic induction signals at ocean worlds and compare with future spacecraft data. We discuss implications for the Europa Clipper mission.","PeriodicalId":15,"journal":{"name":"ACS Earth and Space Chemistry","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsearthspacechem.3c00345","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141369236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Thermodynamic Landscape of Hydrogen Cyanide-Derived Molecules and Polymers 氰化氢衍生分子和聚合物的热力学图谱

IF 2.9 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-07 DOI: 10.1021/acsearthspacechem.4c00088

Hilda Sandström, Fernando Izquierdo-Ruiz, Marco Cappelletti, Rana Dogan, Siddhant Sharma, Clara Bailey and Martin Rahm*,

引用次数: 0

Modeling the Spatial and Temporal Evolution of Fractured Systems with a Heterogenous Mineralogy 异质矿物学断裂系统时空演化建模

IF 2.9 3区化学

ACS Earth and Space Chemistry Pub Date : 2024-06-05 DOI: 10.1021/acsearthspacechem.3c00322

Parisa Asadi, Md Fahim Salek and Lauren E. Beckingham*,

{"title":"Modeling the Spatial and Temporal Evolution of Fractured Systems with a Heterogenous Mineralogy","authors":"Parisa Asadi, Md Fahim Salek and Lauren E. Beckingham*, ","doi":"10.1021/acsearthspacechem.3c00322","DOIUrl":"10.1021/acsearthspacechem.3c00322","url":null,"abstract":"Reactive transport modeling is a critical tool for elucidating the coupling among geochemical reactions, transport processes, and fracture permeability. This study explores the implications of preferential clay-rich regions near fracture surfaces of a Mancos shale sample on the reactive evolution of the fracture by using reactive transport simulations. These simulations utilized heterogeneous mineralogy data obtained from an in-depth analysis of a clay-rich region near the fracture surface, sourced from a mechanically induced fracture. We compared these simulations with counterparts assuming homogeneous mineral distributions based on bulk X-ray diffraction (XRD) data and prior imaging of the sample matrix. The results consistently show increased reactivity in cells near the inlet and fracture surface across all scenarios. The most significant changes in the porosity, mineral composition, and ion concentration occur in cells adjacent to the fracture at the system inlet. Comparative analysis reveals variations in mineral and porosity evolutions among the three systems. Over longer simulation periods, dissolution and porosity increase occur more rapidly in simulations, reflecting mineral heterogeneity, particularly within the clay-rich region near the fracture. A sensitivity analysis of mineral surface area (SA) values shows consistent trends using both low and high Brunauer–Emmett–Teller (BET) SA values over short time scales (days) but substantial disparities over longer time scales (years). These findings hold promise for improving our ability to predict the evolution of reactive fractures, with implications for subsurface CO2 sequestration and oil recovery. In summary, this study advances our understanding of reactive transport in fractured systems, offering new avenues for predictive modeling.","PeriodicalId":15,"journal":{"name":"ACS Earth and Space Chemistry","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141386538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0