Applied Geochemistry最新文献

{"title":"Hydrogeochemical characteristics of groundwater impacted by acid mine drainage: Seasonal evolution of dissolved organic matter and heavy metals","authors":"Zehao Qiu ,&nbsp;Yu Liu ,&nbsp;Xianming Xie ,&nbsp;Song Wang ,&nbsp;Lezhang Wei ,&nbsp;Tangfu Xiao ,&nbsp;Oxana Erina","doi":"10.1016/j.apgeochem.2026.106724","DOIUrl":"10.1016/j.apgeochem.2026.106724","url":null,"abstract":"<div><div>Acid mine drainage (AMD) that occurs during the mining process of mineral resources presents a significant threat to both the natural environment and human health. This study focuses on the AMD-affected groundwater system from the Dabaoshan mining area in Guangdong Province, South China, and the hydrogeochemical evolution, seasonal variations of dissolved organic matter (DOM) and heavy metals, and the corresponding interaction mechanism are systematically investigated. A variety of methods are used for further study, including hotspot maps, principal component analysis, self-organizing maps and structural equation models. There exists a spatial and temporal coupling relationship between Fe and certain DOM components. With the exception of one well (G1), pH increased from the rainy to dry seasons at all sampling sites. The proportions of various fractions of DOM demonstrated considerable variation between the rainy and dry seasons. During the rainy season, the concentration of high-excitation tyrosine in groundwater is very low. Tryptophan-like compounds were not identified in DOM during the dry season. Fulvic acid and low excitation tyrosine were strongly correlated, whereas tryptophan-like and high excitation tyrosine were significantly related. The heavy metal content and pH varied according to the distribution of sampling site wells (distance from the mine). Moreover, DOM has a significant effect on heavy metal mobility via complexation. Seasonal factors significantly influence DOM in groundwater, thus affecting its interaction with heavy metals. This research offers a scientific basis for developing accurate and impactful strategies for pollution prevention and control for groundwater systems impacted by AMD.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"199 ","pages":"Article 106724"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171458","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":"Groundwater age distribution in granular and fractured aquifers of the Laurentides region, Eastern Canada, to evaluate the resource sustainability","authors":"Samuel Bolduc ,&nbsp;Daniele L. Pinti ,&nbsp;Marie Larocque ,&nbsp;Olfa Swaissi","doi":"10.1016/j.apgeochem.2026.106706","DOIUrl":"10.1016/j.apgeochem.2026.106706","url":null,"abstract":"<div><div>Groundwater ages cannot be considered precise metrics for directly evaluating the sustainability of water resources. However, determining the age distribution enhances understanding of the entire hydrogeological system and, indirectly, contributes to the assessment of sustainability. The objective of this research was to evaluate how a combination of age tracers can contribute to estimating groundwater age distribution in large and complex aquifer systems. The system consists of fractured Grenvillian-age (≥ 1 Ga) aquifers, locally covered by granular postglacial Holocene aquifers in valley bottoms of the mountainous and hilly Laurentides region of southern Québec Province (Eastern Canada). The age tracers used in this study, ¹⁴C, ³H/³He, and U–Th/⁴He were measured on groundwater samples collected from 32 municipal wells and one piezometer, from five watersheds. As expected, mixed idealized ages were obtained. The ³H/³He ages varied from modern to 64 years. The ¹⁴C-corrected ages generally ranged from “modern” to 6500 years old. The U–Th/⁴He-computed ages were close to the ¹⁴C ages but were strongly dependent on local aquifer conditions, primarily on U and Th contents and porosity. Three “activity indexes” – A⁴He, A³H, and A¹⁴C representing groundwater aging recorded a common temporal evolution of groundwater, with increasing ages from the southernmost, more populated areas to the less populated areas in the northern portion of the study area. Lumped parameter models applied to ³H–¹⁴C and to radiogenic ⁴He–¹⁴C showed that the aquifers contain a mixture of “modern” and “pre-industrial” water (200–14,000 yrs), and possibly Late Pleistocene water (10–30 ka) in some confined areas. This research advances the understanding of regional hydrogeology, providing insights into how North America's glacial history has influenced the mixing of groundwater volumes of different ages, thereby affecting groundwater sustainability differently in a complex aquifer system.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"199 ","pages":"Article 106706"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071080","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":"Isotopic tracing of mercury sources, subsurface migration, and re-emission in industrial legacy sites","authors":"Xin Gao ,&nbsp;Yuchen An ,&nbsp;Yang Wang ,&nbsp;Xingmei Liu ,&nbsp;Min Liu ,&nbsp;Jiubin Chen ,&nbsp;Hongming Cai ,&nbsp;Wang Zheng","doi":"10.1016/j.apgeochem.2026.106714","DOIUrl":"10.1016/j.apgeochem.2026.106714","url":null,"abstract":"<div><div>Industrial legacy sites, even after ceasing operations, often suffer from severe heavy metal contamination in soils. These residual pollutants can pose significant threats to the surrounding environment. However, tracing the sources, migration pathways of heavy metals from such sites, and their impacts on adjacent environments remains a major challenge. The present study focuses on historical mercury (Hg) contamination at two decommissioned industrial sites (an e-waste dismantling site and a pyrite smelting site), and employed Hg isotope analysis to investigate the sources, pollution pathways, subsurface migration in soils, and uptake of Hg by leafy vegetables. Topsoils at both sites showed substantially elevated Hg concentrations (2.5–32.1 mg kg⁻¹), primarily derived from direct waste discharges during production. At the e-waste dismantling site, direct Hg emission from industrial waste gas was the primary contributor to adjacent soil contamination, while gaseous elemental Hg re-emitted from legacy-contaminated soils served as the dominant Hg source for nearby vegetables. Soil organic matter was identified as the key factor driving subsurface Hg accumulation at this site. In contrast, the pyrite smelting site exhibited a different contamination mechanism: acidic wastewater leaching altered soil pH, and under low pH conditions, strongly bound Hg was remobilized, leading to Hg pollution in deeper soil layers (down to ∼500 cm depth). These findings reveal distinct environmental risks from direct emission and legacy Hg re-emission across different types of abandoned industrial sites, highlighting the need for site-specific management and remediation strategies to mitigate soil and agricultural Hg contamination.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"199 ","pages":"Article 106714"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171461","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":"GeoChemNet: An interactive tool for visualizing and interpreting outliers in geochemical data using networks","authors":"Timothy C.C. Lui ,&nbsp;Anirudh Prabhu ,&nbsp;Anna Bidgood ,&nbsp;Shaunna M. Morrison ,&nbsp;Jef Caers","doi":"10.1016/j.apgeochem.2026.106712","DOIUrl":"10.1016/j.apgeochem.2026.106712","url":null,"abstract":"<div><div>In this paper we introduce <em>GeoChemNet</em> as a novel tool for visualizing and analyzing high-dimensional geochemical datasets. Unlike traditional approaches such as principal component analysis and pairplots, <em>GeoChemNet</em> uses a non-linear methodology that does not require predefined number of elements, allowing it to reveal highly multidimensional anomalies that are not elucidated using other methods. We demonstrate its advantages using an artificial dataset and compare its performance to conventional techniques. We then apply the tool to two case studies from the same region. The first illustrates how <em>GeoChemNet</em> can work synergistically with clustering algorithms to uncover structure within lithological units. The second demonstrates its utility as a standalone tool for reducing the search space in mineral exploration of sediment-hosted copper deposits. Ultimately, <em>GeoChemNet</em>'s interactive, geospatial visualizations enhance communication between geoscientists and data scientists and uncover geological insights from geochemical datasets.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"199 ","pages":"Article 106712"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071114","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":"Hydrochemical evolution and response mechanisms in multiple aquifers affected by coal mining activities: Insights from machine learning and inverse geochemical modeling","authors":"Chang Lu ,&nbsp;Huiyong Yin ,&nbsp;Wenju Cheng ,&nbsp;Fangying Dong ,&nbsp;Weijie Zhang ,&nbsp;Biao Li ,&nbsp;Yankun Jia","doi":"10.1016/j.apgeochem.2026.106683","DOIUrl":"10.1016/j.apgeochem.2026.106683","url":null,"abstract":"<div><div>Extensive coal mining has significantly altered hydrogeological systems by enhancing aquifer connectivity and changing groundwater chemistry, which poses environmental and health risks. Traditional hydrochemical methods often fail to fully capture these mining-induced impacts. To better capture mining impacts, 127 groundwater samples from three aquifers were analyzed using hydrochemical techniques and clustering algorithms including SOM and K-Means. The results show that ion exchange, carbonate and silicate dissolution, and water–rock interactions drive groundwater evolution under mining disturbances. Major ions such as Na⁺, HCO₃⁻, and SO₄²⁻ display clear spatial variation and enrichment patterns. Clustering divided the samples into seven hydrochemical types, reflecting differences in aquifer connectivity and geochemical processes. PHREEQC inverse modeling further quantified mineral transformations, confirming the combined roles of pyrite oxidation, carbonate dissolution, and cation exchange. Mining-enhanced hydraulic connections between the Sandstone and 3# Limestone aquifers led to similar hydrochemical features, while the deeper Ordovician aquifer maintained distinct signatures due to limited disturbance. These results support a conceptual model of “mining disturbance–fracture connectivity–hydraulic linkage–hydrochemical evolution,” providing a scientific basis for mitigating acid mine drainage and advancing sustainable groundwater and mineral resource management in mining regions.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"198 ","pages":"Article 106683"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904064","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":"Sulfide mineral weathering in century-old waste rock","authors":"Andrew Hicks,&nbsp;Colleen O. Harper,&nbsp;Richard T. Amos","doi":"10.1016/j.apgeochem.2026.106697","DOIUrl":"10.1016/j.apgeochem.2026.106697","url":null,"abstract":"<div><div>The weathering of sulfide minerals in mining waste-rock piles can release acidity and metals to the environment, potentially for many decades. Although the extent and mechanisms of weathering have been investigated in several studies, most have been done on relatively young waste rock and there is a lack of information on the long-term weathering in these systems. The Ore Chimney site is an abandoned prospecting property with a ∼10 kiloton waste-rock pile that has been in place for ∼100 years. This study provides a detailed mineralogical investigation of waste-rock samples from three vertical profiles obtained in trenches dug through the 5-m depth of the pile. Analysis included optical microscopy, scanning electron microscopy with energy dispersive X-Ray spectrometry, powdered X-ray diffraction, total carbon and sulfur analysis, and solid-phase digestions followed by inductively coupled plasma atomic emission and mass spectrometry on both fine (&lt;0.5 mm) and coarse (0.5–2 mm) fractions of sieved waste rock. The results show relatively uniform weathering throughout the waste-rock pile, and in the coarse and fine waste-rock fractions, with preferential weathering of sulfide minerals in the order sphalerite &gt; galena &gt; pyrite &gt; chalcopyrite. Most sphalerite grains showed 10–30 % weathering of the exposed mineral surfaces, while the other sulfides showed no weathering in many of the grains. This study shows that despite ∼100 years of sub-aerial exposure, sulfide weathering continues, with preferential weathering of sphalerite limiting the oxidation of the other sulfide minerals and the release of acidity, while preserving the buffering capacity of carbonate minerals.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"198 ","pages":"Article 106697"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974372","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":"Geochemistry of molybdenum (Mo), vanadium (V), and tungsten (W) in Swedish rivers and headwater streams","authors":"Sarah Conrad ,&nbsp;Lina P.B. Hällström ,&nbsp;Susanne Bauer ,&nbsp;Johan Ingri","doi":"10.1016/j.apgeochem.2026.106708","DOIUrl":"10.1016/j.apgeochem.2026.106708","url":null,"abstract":"<div><div>Understanding the cycling of critical oxyanion-forming trace metals is essential, considering their growing use in green technologies and their potential environmental risks. We investigated the source, transport, and fate of vanadium (V), molybdenum (Mo), and tungsten (W) across hemiboreal and boreal landscapes in Sweden, spanning 97 hemiboreal headwater streams, one boreal headwater stream, and two unregulated boreal rivers. Spatial and temporal variability was pronounced. V occurred at the highest concentrations, with hemiboreal headwaters averaging ∼78 μg/L compared to ∼8 μg/L for Mo and ∼0.2 μg/L for W. These concentrations exceeded those in boreal headwaters and rivers by factors of up to 300, reflecting enhanced weathering under milder hemiboreal conditions. Partitioning differed strongly among elements: Mo was predominantly dissolved, W occurred in both dissolved and particulate fractions, and V shifted from dominantly dissolved in hemiboreal streams to nearly equal distribution in boreal waters. Seasonal dynamics were most pronounced during spring snowmelt, when hydrological flushing and hyporheic exchange mobilized solutes from riparian soils and porewaters. Element-carrier relationships highlighted strong associations of V and W with Fe- and Al-rich phases, and Mo with organic matter, Si, and U, particularly at river mouths. Redox transitions in wetlands and hyporheic zones further mediated mobility, promoting V release and W transport while retaining Mo under reducing conditions.</div><div>Our findings demonstrate that hydrology, redox dynamics, and landscape type jointly regulate the mobility and fate of V, Mo, and W from source to sea. The distinct behaviours of these elements highlight headwater streams as critical biogeochemical control points and underscore the need to integrate colloidal, redox, and hydrological processes into monitoring and modelling frameworks. These insights have implications for evaluating ecological risks and for critical raw material (CRM) exploration in northern landscapes under a changing climate.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"199 ","pages":"Article 106708"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171460","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":"Nitrate aerosol and dust pollution evidence from a non-central-heating county in China","authors":"Mingya Wang ,&nbsp;Wenju Wang ,&nbsp;Mingshi Wang ,&nbsp;Xuechun Zhang ,&nbsp;Baoxian Jia","doi":"10.1016/j.apgeochem.2025.106675","DOIUrl":"10.1016/j.apgeochem.2025.106675","url":null,"abstract":"<div><div>As urbanization in China has shifted from major cities to surrounding counties, the study of PM_2.5 in these areas has gained significant attention. However, the pollution characteristics and sources of winter PM_2.5 in noncoal-heating counties in China remain unclear. In this study, PM_2.5 samples were collected from both urban and suburban functional areas in Xixian County, China. The mean PM_2.5 concentrations at the Xizhou Hotel (urban) and Primary School (suburban) sites were 81.4 ± 28.2 and 97.1 ± 35.7 μg/m³, respectively, with higher concentrations observed at the suburban site than at the mixed commercial and residential site. Two distinct haze types were identified: the first, dominated by Ca and Al, was primarily caused by windblown dust, including construction dust and soil dust from abandoned farmlands. The second, dominated by NO₃⁻, SO₄²⁻, and NH₄⁺, resulted from the secondary oxidation of primary gaseous precursors. Secondary pollutants (53.0 %) and vehicular traffic (24.9 %) were the major contributors. This study provides valuable data on the chemical characteristics and sources of winter haze in noncoal heating counties, providing a scientific basis for global PM_2.5 control strategies.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"198 ","pages":"Article 106675"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904063","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":"Estimation of thermodynamic properties for kerogen present in Boom Clay","authors":"Laurent Richard ,&nbsp;Sonia Salah,&nbsp;Delphine Durce,&nbsp;Norbert Maes","doi":"10.1016/j.apgeochem.2025.106652","DOIUrl":"10.1016/j.apgeochem.2025.106652","url":null,"abstract":"<div><div>In Belgium, Boom Clay (BC) represents one of the potential host rocks considered for the disposal of high-level and/or long-lived radioactive waste. The latter corresponds to heat generating waste which during disposal and the thermal phase may affect the rock properties and porewater chemistry. In this respect, it has been shown by different authors that perturbations, such as oxidation and/or thermal stress may lead to the degradation of the organic matter, i.e. kerogen comprised in BC. Although many studies on the solid and also on the dissolved OM pools of Boom Clay have been performed in the past, a thermodynamic description of the Boom Clay kerogen (BCK) and its degradation (products) is still lacking. BCK subjected to oxidation or thermal stress may generate thermolabile components and lead to the release of oxygen-containing polar products, like carboxylic acids and phenols which may affect the transport behavior of some radionuclides and chemotoxic elements due to complexation. In addition to water-soluble compounds also CO₂ is formed by the thermal cracking of kerogen. Based on spectroscopic methods and pyrolysis experiments previously performed on isolated BCK, the organic compounds constituting its macromolecular structure (i.e. n-alkanes, branched alkanes, aromatic hydrocarbons and oxygen compounds) were identified. The latter and application of the so-called group contribution approach allowed to estimate the thermodynamic standard state properties of BCK at 25 °C and 1 bar. The derived thermodynamic properties enable to formalize the geochemical reactions described above, as well as calculation of stability relations for different kerogen compositions under physicochemical conditions of the BC formation.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"198 ","pages":"Article 106652"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074601","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":"A common ontology for stable isotope data","authors":"Nina Welti ,&nbsp;Steph Hawkins ,&nbsp;Kathryn Waltenberg ,&nbsp;Cath Hughes ,&nbsp;Jagoda Crawford ,&nbsp;Yanfeng Shu ,&nbsp;Regina Campbell ,&nbsp;Alex Leslie ,&nbsp;Athina Puccini ,&nbsp;Christoph Gerber ,&nbsp;Axel Suckow ,&nbsp;Geoff Fraser ,&nbsp;Lian Flick","doi":"10.1016/j.apgeochem.2026.106682","DOIUrl":"10.1016/j.apgeochem.2026.106682","url":null,"abstract":"<div><div>Stable isotope data has broad applicability across multiple science domains. As more datasets are published and stable isotope data systems are built, the findability and accessibility of stable isotope data increases. However, due to a lack of a common reporting framework, the interoperability of these data systems is limited. A common ontology is needed so stable isotope data systems and published datasets can be translated into a common format without disrupting existing data models or introducing complex workflows. This common ontology for stable isotope data and associated metadata offers a methodology to achieve cross-domain interoperability of environmental stable isotope data. It functions as a straightforward data stewardship tool to enhance the findability, accessibility, interoperability, and reuse (FAIR principles) of stable isotope data across disciplines. Ultimately, this ontology aims to make existing data systems cohesive, interoperable, and discoverable across the entire measurement pipeline, encompassing publicly accessible repositories, peer-reviewed literature, and grey literature.</div></div>","PeriodicalId":8064,"journal":{"name":"Applied Geochemistry","volume":"198 ","pages":"Article 106682"},"PeriodicalIF":3.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974373","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}