1.486 hasil
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Yankuang ceshi
Scopus
ISSN 0254-5357 · Science Press, PR China · 1.486 artikel di indeks
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Artikel Jurnal
Determination of Bromine and Iodine in Brine by Inductively Coupled Plasma-Mass Spectrometry with Ion Exchange Resin Separation
Natural brine contains abundant resources, including bromine (Br) and iodine (I). However, the large number of cations such as sodium (Na+), potassium (K+), calcium (Ca2+) and magnesium (Mg2+) present in the high-salt matrix, cause severe matrix interference in the determination of Br and I by…
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Artikel Jurnal
Mineralogical–Geochemical Characteristics of Amazonite from Five Localities in Northwest China
Amazonite was a significant gemstone in ancient China, and determining its provenance is crucial for understanding early interregional resource use and cultural exchange patterns. However, previous studies have often been limited to single localities or specific artifacts, lacking systematic…
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Artikel Jurnal
Discussion on the Applicability of the Combustion Oxidation–Non-Dispersive Infrared Absorption Method for Dissolved Organic Carbon Analysis in Water with High Inorganic Carbon Background
Dissolved organic carbon (DOC) is a key component of lake carbon cycling, with its concentration directly influencing carbon flux estimation, microbial metabolism, and water quality assessment. Accurate DOC quantification is therefore critical for evaluating lake ecological functions. The…
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Artikel Jurnal
Fractal Characterization of Pore-Throat Types and Fluid Occurrence Mechanisms in Tight Sandstones: A Case Study of the He 1 Member, Ordos Basin
The He 1 Member of the Ordos Basin is a key interval for tight sandstone gas exploration and development. The complex interplay between mineral fabric and pore-throat structure makes movable fluid evaluation challenging, which is a critical factor restricting the efficient development of gas…
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Artikel Jurnal
Rapid Analysis Method of Selenium Content in Biological Sample Using Monochromatic Focused High-Precision X-ray Fluorescence Spectroscopy and a Double-Film Thin Sample Technique
To address the challenges of complex sample pretreatment and the difficulty of on-site rapid screening for selenium (Se) detection in human hair, this study established a rapid analytical method based on monochromatic focused high-precision X-ray fluorescence spectroscopy (HPXRF). This work is…
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Artikel Jurnal
Quantitative Brittleness Evaluation of Tight Sandstone in the Yanchang Formation, Southern Ordos Basin, Based on Machine Learning and Multi-Source Data
The southern Ordos Basin is rich in tight oil resources. However, the strong heterogeneity of its main reservoir, the tight sandstone of the Yanchang Formation, limits the applicability of traditional brittleness evaluation methods based on single parameters or linear combinations, affecting the…
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Artikel Jurnal
A Review of Research Progress in Fire Assay Preconcentration and Determination Techniques for Trace Precious Metals in Geological Samples
Precious metals, including gold (Au) and platinum-group elements (PGEs), are characterized by extremely low abundances, heterogeneous distribution and susceptibility to the “nugget effect” in natural geological matrices, making their accurate quantitative determination a long-standing challenge in…
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Artikel Jurnal
Risk Assessment and Simulation Prediction of a Groundwater Environment for an Informal Waste Dump in the Karst Region of Southwest China
Karst areas possess special hydrogeological conditions. In this area, the leachate of the informal waste landfills (without anti-seepage layers) will migrate rapidly through the preferential flow paths (karst fissures and conduits) and contaminate the groundwater. Scholars at home and abroad have…
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Artikel Jurnal
A Review of Geological and Geochemical Constraints on the Formation Mechanisms and Adaptive Evolution of Animal Biodiversity in Karst Regions
Karst regions, characterized by widespread carbonate rock distribution and intense dissolution processes, develop a distinctive geochemical environment marked by high calcium content, alkaline conditions, low nutrient availability, and severe habitat fragmentation. Through three core…
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Artikel Jurnal
Wavelength-Dispersive XRF Analysis of Total Cr and the Effects of Cr Speciation in High-Chromium Soils
With the surge in industrial use of chromium (Cr) and continuous intensification of pollution emission, Cr levels in soils across numerous regions have risen significantly. X-ray fluorescence spectrometry (XRF) offers advantages including simple sample preparation, simultaneous multi-element…
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Artikel Jurnal
Quantitative Classification of Permian Volcanic Facies in the Western Sichuan Basin Based on Mineral Composition and Unit Cell Parameter Characteristics
There are significant lithological differences among different Permian volcanic facies in the western Sichuan Basin, and there is uncertainty in dividing volcanic facies based on petrological properties when samples are insufficient. In this work, techniques such as X-ray diffraction (XRD) Rietveld…
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Artikel Jurnal
Activation Performance and Mechanisms of Exogenous Low-Molecular-Weight Organic Acids on Available Phosphorus in Black Soils of Northeast China
In the black soil region of Northeast China, long-term excessive application of phosphorus fertilizers has led to soil phosphorus accumulation and reduced availability. Activating soil available phosphorus (AP) is therefore crucial for sustainable agricultural development. Previous studies have…
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Artikel Jurnal
Development and Performance Regulation Mechanisms of Silicon Drift Detectors Based on Domestic Chips
Silicon drift detectors (SDDs) hold significant application value in high-precision detection tasks due to their inherent advantages of high energy resolution, low noise, and rapid response. Addressing the performance bottlenecks of domestic SDDs concerning leakage current control, readout…
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Artikel Jurnal
Simultaneous Determination of Phosphorus, Sulfur, and Selenium in Rocks and Stream Sediments by Inductively Coupled Plasma-Tandem Mass Spectrometry (ICP-MS/MS) with Sealed Acid Digestion
In the geochemical analysis of rocks and stream sediments, phosphorus (P), sulfur (S), and selenium (Se) are important tracer elements, providing critical insights into diagenetic and metallogenic processes, redox conditions and ecotoxicity assessment, respectively. The unique physical and chemical…
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Artikel Jurnal
Role and Application of Plant Growth-Promoting Rhizobacteria in the Formation and Stabilization of Soil Organic Matter in Mining Areas: A Review
Mining activities have caused severe degradation of mining soils, characterized by organic matter (OM) depletion, structural damage, and heavy metal contamination, posing significant challenges for ecological restoration. A key challenge in restoring these soils lies in insufficient OM inputs and…
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Artikel Jurnal
Geo-Environmental Suitability Assessment for GeoHealth in the Oroqen Autonomous Banner, Inner Mongolia
Human health is intimately linked to the geological environment. Geological background, water, soil, air, and biological factors significantly influence population health. However, a single-perspective evaluation of geo-environmental suitability fails to capture multi-factor interactions, limiting…
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Artikel Jurnal
Atomic Fluorescence Spectrometric Analysis of Selenium in Geological Samples: Interference and Correction of Lead
Since the cathode material of selenium hollow cathode lamps is a lead–selenium alloy, it can simultaneously excite characteristic spectral lines for both lead and selenium. When using atomic fluorescence spectrometry to determine selenium content in geological samples, interference from elevated…
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Artikel Jurnal
Analytical Methods for Readily Oxidizable Organic Carbon in Different Soil Types
Readily oxidizable organic carbon is the most active fraction of soil organic carbon, which deeply participates in the dissolution, migration, transformation, absorption and other processes of nutrient elements in the soil. Accurately determining the content of readily oxidizable organic carbon in…
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Artikel Jurnal
Determination of Impurity Elements in High-Purity Quartz by High-Resolution Inductively Coupled Plasma-Mass Spectrometry with Closed-Vessel Acid Digestion
High-purity quartz sand (with an SiO2 content ≥99.998%) is a critical raw material in the semiconductor and photovoltaic industries. The content of impurity elements directly influences product performance, and their total concentration must be strictly controlled below 20 μg/g. Inductively coupled…
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Artikel Jurnal
Effects and Mechanisms of Mineralizing Microorganisms–Biochar Composites for Soil Heavy Metal Remediation: A Review
Soil heavy metal pollution has emerged as a critical environmental issue that threatens the safe utilization of land resources and the sustainable development of agriculture. The combined remediation technology of mineralizing microorganisms and biochar, as a green and efficient strategy for heavy…
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