isotopic

It quickly became clear, however, that the isotopic composition of meteorites differed not at all from that of the Earth itself.

The trick they used to do this was to look at the isotopic composition of the oxygen in the wood of local trees.

The ideal choice, when isotopic composition is used to investigate the source of copper ore, would seem to be copper itself.

The osmium isotopic compositions and model age of mantle peridotite xenoliths from Jiangsu-Anhui area and their geological significance.

The ore and the magma share similar lead isotopic features which suggests a close relations between them.

Inorganic Mass Spectrometry is preferably used each time extremely low concentrations and isotopic abundance are to be determined.

Up to now, there are no systematic geochemical studies and isotopic age for the Zhuanghe gold deposit, eastern Liaoning.

Therefore, development of isotopic analytical techniques is always a major task of study on isotopic geochemistry.

This paper, combined with previous data, briefly summarizes the results of isotopic studies of these deposits.

Isotopic response" describes the occurrence of a new disorder at the site of another, unrelated, and already healed skin disease.

between samples of the common ore minerals of copper, isotopic variations greater than the measurement error have not been found.

The characteristics of hydrogen and oxygen isotopic compositions indicate that the hot spring water iso originated from the meteoric water.

The distribution pattern of the carbon isotopic compositions of the individual n-alkanes shows almost no change during this process.

The isotopic dating and fossil geochronometry are the basic methods of ophiolite geochronometry.

The proportional and carbon isotopic compositions of hydrocarbon and non-hydrocarbon gases are almost identical among these gold capsules.

Electron impact-induced dissociation by hydrogen and its isotopic molecule will occur in edge plasma.

These dating methods have made great progress in the quaternary geochronology and isotopic geoscience.

Different metabolic pathways represent different biochemical reactions and result in significant variations in the isotopic fractionations.

Researchers collected rocks and measured minute isotopic variations in rare earth elements called neodymium and samarium.

Magma rising from deep within the Earth has a different isotopic and chemical composition than magma that forms just below Earth's crust.

The neck should be examined yearly. Isotopic scanning is not repeated routinely.

and preliminary studies indicate virtually uniform isotopic composition of the lead from a single copper-ore source.

However, contrary to previous views, there is no isotopic evidence that Archaean rocks are present in the Mashan Complex.

The isotopic tracing technique is an advanced method in the research of photosynthesis of plants.

This paper also discussed the method to analyze the individual hydrocarbon isotopic composition from crude oil and coal rock samples.

Heavy water is also used in research as an isotopic tracer for chemical reactions and biochemical pathways.

There exist possible isotopic fractionation effects in generation-expulsion process of terrestrial source rocks.

This paper describes Pb, H, O, C isotopic feature which provide metallogenic information for the deposits.

Compared with water amount, the quality of aqueous medium has less effect on the yields, components and hydrogen isotopic composition.

The molecules' structures and isotopic signatures record their biological origin and history.

Precise determination of the platinum-group elements and Os isotopic ratios in low-level rock samples.

National Geographic reports that isotopic dating and DNA experiments revealed the unusual pairing of body parts.

In the safeguards environmental sampling, analyzing isotopic ratio of single uranium-bearing particle in swipe samples was very important.

Isotopic studies from geothermal fields indicate that about 95% of the thermal fluid from steam wells is meteoric in origin .

The H-O isotopic compositions of fluid inclusion represent the mixture of atmospheric precipitation.

It's very difficult to explain and evaluate information owing to the isotopic pollution which leads to untruth well log information.

An isotopic fractionation of boron during evaporation of seawater was investigated.

Stable isotopic method can be used effectively in the diagenetic research of deep water carbonate rocks.

By using hydrogeochemical and isotopic methods, the origin of the geothermal water and the CO2 gas were discussed.

It is showed that compensated neutron logging can be realized by using neutron generator instead of isotopic neutron source.

The isotopic composition of hydrogen and oxygen in heavy water are analyzed by using a high-resolution mass spectrometer.

The isotopic composition of lead, sulphur and carbon demonstrate a complex source of ore forming material.

Stable isotopic composition of fossil ostracode is used as an ideal proxy for paleo- lake sedimentary environments.

Based on this, the effect on the measurement of boron isotopic ratios have been researched further.

Isotopic geochemistry of granitic rocks from Tuomuer Peak region, Tianshan , China .

the progeny of vocahic spurting injinningian is studied through isotopic era , which belongs to the morning of new proterozoic era.

Where possible all four isotopic systems were tested in the same individual.

Isotopic microtest was employed to detect the antimalarial activity for 20 new compounds.

8 of the document [1] for complementary isotopic subspace and kernel-contained isotropic subspace.

The source of metallogenic solution is deduced from H and O isotopic compositions.

The variations in isotopic ratios take place on the right time scale, and they mirror those seen in modern corals, he notes.

In addition, the hydrogen and oxygen isotopic data of the Mujiazhuang copper deposit supports the results.

You've got some radioactive isotopic that can spontaneously decay into some other nucleus.

The proposed method is more accurate than the qualitative investigation such as isotopic tracer.

Age of the Jinchuan Copper-Nickel Deposit and Isotopic Geochemical Feature of Its Source

how could such a change in isotopic composition have come about

Measurement of isotopic abundance and age of plutonium material in a sealed container

Isotopic Dating of the Mamba Granitoid in the Gangdise Tectonic Belt and Its Constraint on the Subduction Time of the Neotethys

Isotopic geochemistry of the Lala copper deposit, Sichuan Province, China and its metallogenetic significance

Stable carbon isotopic composition of polycyclic aromatic hydrocarbons in soil and its implications for the pollutants tracing

Environmental Isotopic Composition of Natural Water in Ordos Cretaceous Groundwater Basin and Its Significance for Hydrological Cycle

A Preliminary Study of the Boron Concentration in Vapor and the Isotopic Fractionation of Boron During Evaporation of Seawater

Sulfur Isotopic Geochemistry of the Water System in Mine Area: A Case Study of the Hou River in Hezhang County, Guizhou, China

Thermolysis Production of Lake Carbonatite Organic Matter and its Carbon Isotopic Composition Characteristic

A discussion of the isotopic age of the bird fossil-bearing bed in western Liaoning

Isotopic Composition and Concentration of Dissolved Boron in a Freshwater Seawater Mixing Plume of the Yangtze River Estuary

Nd, Sr, Pb isotopic geochemistry of the alkali-rich intrusive rocks in East Qinling, central China and its tectonic significance

Isotopic composition of groundwater and prospecting indicators of a uranium metallogenic belt

Sulfur isotopic composition of modern seafloor hydrothermal sediment and its geological significance

Application of Channeling Identification Technique through Isotopic Tracer-Temperature Combination Logging

Carbon and oxygen isotopic composition in a stalagmite from Qingjiang, Hubei, and their paleoclimatic significance

Deformation Features and Isotopic Ages of the Feidong Ductile Shear Belt in the Tan-Lu Fault Zone and Its Tectonic Implications

Carbon Isotopic Composition of Organic Matter in Co-Rich Ferromanganese Crust and Its Implication for Paleoceanography

Carbon-Oxygen Isotopic Characteristics of Authigenic Dawsonite and Its Genetic Significance

Extraction and Separation of Boron in Rock Samples and Its Isotopic Determination by Thermal Ionization Mass Spectrometry

Isotopic Tracer Technique Applied in Seepage Inspection of Levees Around the Hongze Lake

Strontium isotopic curve of the Carboniferous in Huishui, Guizhou, and chronostratigraphic correlation

Finding of the Dolostones with Special Carbon Isotopic Composition and Its Significance

Isotopic Ages of the Granitic Gneiss in Alongshan Area of Daxinganling and its Implication for Global Continental Reconstructions

Relationship between the stable carbon and oxygen isotopic compositions of tree ring in the Mt. Helan region, Northwestern China

Isotopic Characteristics of Groundwater and Its Response to Paleoclimatic Variation in Heihe River Basin

Sulfur isotopic composition of acid deposition in South China Regions and its environmental significance

Planktonic Foraminifer and Oxygen Isotopic Evidence of a Late Miocene Western Pacific Warm Pool

Isotopic Chronologic Evidence of Bogda Rift Closure and Regional Uplift and Its Geological Significance

Chemical and stable isotopic geochemical characteristics of ore-forming fluid of the Shizishan copper and gold ore-field, Tongling, China

Hydrogen Isotopic Composition of n-alkanes Extracted from Terrestrial Plants and Its Paleoenvironmental Implications

The Uranium Isotopic Disequilibrium Characteristics of Sandstone Type Uranium Mineralization

Groundwater Isotopic Stratification and Its Implications in Northern China

Pyrites and Sulfur Isotopic Composition near the Permian-Triassic Boundary in Meishan, Zhejiang

Isotopic Dating of the Nyainqentanglha Granite and Its Significance

Theoretical Calculation and Experiment Determination of Isotopic Separation Factor in Palladium Hydrides

Oxygen Isotopic Exchange and Its Application in the Heterogeneous Catalytic Oxidation

Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Single-Standard Gas Source Multiple Collector Mass Spectrometer Method

Evolution of Oceanic Nd Isotopic Composition in the Cenozoic and Its Environmental Significance

Distribution characteristics of geothermal resources and isotopic geochemistry of hot-water in the Daocheng County, Sichuan Province

Lead isotopic composition of sediments from West Lake and the Grand Canal in Hangzhou and its significance for lead source tracing

Standard Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances by Thermal Ionization Mass Spectrometry

Application of Stable Isotopic Chemical Labeling Connected with Mass Spectrometry in Quantitative Proteomics

Carbon and oxygen isotopic characteristics of carbonate rocks of Carboniferous- Permian in Jiangshan, Zhejiang Province

Research Progression in the Carbon and Hydrogen Isotopic Fractionation of Organic Compounds During Microbial Degradation

Mass Spectrometric Determination of the Special Parameters of the Potassium-Calcium Isotopic System

Stable carbon isotope; Isotopic fractionation; Compound-specific isotope analysis;

Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals

Helium and Argon Isotopic Components of Fluid Inclusions in Dachang Tin-Polymetallic Deposit and Their Geological Implications

Regional environmental isotopic features of groundwater and their hydrogeological explanation in the Tarim Basin

Comparative method for the calculation of vaporization enthalpy for hydrogen isotopic water molecules

Determination of Lutetium Isotopic Ratio Using Three-Photon Stepwise Resonance Ionization Mass Spectrometry

To Evaluate the Displacement Effect of the High Molecular Polymer Through In-door Experiment and Isotopic Element Logging Technology

Carbon Isotopic Geochemistry and Origin of Natural Gases in the Southern Part of the Western Sichuan Depression

Study of Isotopic Selectivity in Laser Resonance Ionization of Lutetium Atom

Carbon Isotopic Variation of the Organic Matter During the Plant-Soil Transformation

Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution; mass spectrometric method

Isotopic Tracer of Material Origin for Hydrothermal Sedimentary Rocks and Significance in Xicheng Mineralization Area

Accurate Measurement of Neodymium Isotopic Composition Using Neptune Multiple Collector Inductively Coupled Plasma Mass Spectrometry

A preliminary study on calculating annual average temperature from the oxygen isotopic composition of fossil mammal tooth phosphate

Application of isotopic techniques identified groundwater recharge patterns in Yinchuan Plain

Lead isotopic compositions of the Dongping-type gold deposit and their exploration application

Standard Test Method for Determination of Uranium Content and Isotopic Composition by Isotope Dilution Mass Spectrometry

Implications of Stable Nitrogen Isotopic Compositional Variation of Plant and Soil with Different Size Fractions in Loess Plateau

Characteristics of heavy metals and Pb isotopic signatures in sediment cores collected from typical urban shallow lakes in Nanjing, China

Application of isotopic technique in the research of the affected range of lateral seepage of the down-Yellow River water

Isotopic Chronological Evidence for Yanshanian Diagenetic Mineralization in Baishan Rhenium-Molybdenum Mine, E. Tianshan Mountains

He-Ar Isotopic Systematics of Fluid Inclusions in Pyrites from PGE-Polymetallic Deposits in Lower Cambrian Black Rock Series, Southern China

Progresses in Chemical Separation and Mass Spectrometric Measurement for Lu-Hf Isotopic System in Natural Geological Samples

Determination of uranium and plutonium content and isotopic composition; mass spectrometric method

The microbiological and isotopic characteristics of sulfate reduction near water-sediment interface, Aha Lake

Isotopic Investigation of Late Neoproterozoic and Early Cambrian Carbon Cycle on the Northern Yangtze Platform, South China

A Comparison of Variations in Nd and Sr Isotopic Compositions between the Loess Plateau and the Pacific Sediments

Molecular carbon isotopic geochemistry of buried-hill oils and source rocks of the West Liaohe Depression, China

He and Ar Isotopic Components of Main Tin Deposits from Central Nanling Region and Its Signification

Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Double-Standard Multi-Collector Gas Mass Spectrometer

Characteristics of soil organic carbon and its isotopic compositions

Analysis of Compound-Specific Carbon Isotopic Compositions of Trace-Level Volatile Organic Compounds in Aqueous Phases

K-Ar isotopic chronological study of authigenic illite in reservoirs

Application of hydrocarbon generation kinetics and isotopic distillation kinetics to the study of hydrocarbon source rocks

Application of water-chemical tracing experiment and environment isotopic measure technology in rock underground water research

Isotopic Geochemistry and Geochronology Techniques

Influence of oxidation by minerals on proportional and carbon isotopic compositions of gaseous hydrocarbons

Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Single-Standard Gas Source Mass Spectrometer Method

The seawater influence on sulfur isotopic evolution within modern seafloor hydrothermal chimneys

Characteristics of isotopic composition and fluid metallogenesis of the Baiyin Ore Field

Genesis and dynamic setting of mafic dikes in southeastern Fujian: evidence from Sr-Nd isotopic and major and trace element geochemistry

The Research on the Environmental Significance of Atmospheric Sulfur Isotopic Composition in Hengyang

Stable Isotopic Composition of Carbonate in Aerosol of Northwest Dust Sources of China and Its Application for Aeolian Sources

Isotopic-geochemical application to earthquake prediction

Pb Isotopic Characteristics of Late Mesozoic Mafic Rocks from the Lower Yangtze Region: Evidence for Enriched Mantle

A Comparison of Loading Reagent for Boron Isotopic Measurement by Negative Thermal Ionization Mass Spectrometry

Measurement of Nitrogen Isotopic Composition of Soil Samples by Element Analysis-Isotope Mass Spectrometry

Absolute Determination of Samarium Isotopic Abundance by Multiple-collector Inductively Coupled Plasma Mass Spectrometry

TIMS U-Pb Isotopic Dating and Geochemical Characteristics of Paleozoic Granitic Rocks from the Middle-Western Section of Tianshan

Contamination Correct Study on Radioactivity Isotopic Trace Water-injection Profile

Nitrogen isotopic fractionation of crude oil during hydrocarbon secondary migration

Effect of Oxygen Stable-Isotope Fractionation between Co-existing Carbonates on Environmental Isotopic Record

Isotopic characteristics of groundwater and its renewal in the plain area of western Gansu

Main Controlling Factors and Genetic Types of Carbon Isotopic Compositions for Crude Oils from the Qaidam Basin, China

Interpretation and Application of Low Amplitude Anomaly of Injectivity Profile Isotopic Curves

The Application Research on the Isotopic Tracing Flow Measurement Using Cross Correlation Technique

Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies

Extraordinary isotopic fractionation in ozone photolysis

Isotopic Geochemistry of Emeishan Basalt Copper Deposits in Northeastern Yunnan and Western Guizhou

Isotopic systematics of ultrahigh pressure metamorphic rocks and relative dating methods

Tracing Groundwater with Helium Isotopic Compositions in the Hexi Corridor Basin, Northwestern China

Isotopic Geochemistry of the Deep Granite under the Pre-selected Site of Deep Geological Repositories for High-level Radioactive Waste

Isotopic components of two series of Li-F granite derived from different magma sources

Stable Isotopic Geochemistry of the Carboniferous Marine Carbonates in the Tarim Basin

Determination of the Concentration and Isotopic Composition of Plutonium in Soil

Measurement and Test Analysis on Isotopic Osmosis for Curtain Freezing Results of Horizontal Ground Freezing

Determination of the Noble Gas Isotopic Composition in Rocks and Minerals by Mass Spectrometry

Isotopic Geochronology of the Ore-forming Process in the Hanshan Gold Deposit of the North Qilian Mountains

Standard Practice for the Ion Exchange Separation of Uranium and Plutonium Prior to Isotopic Analysis

Measurement of Nitrogen Isotopic Composition of Soil Samples by Element Analysis-Mass Spectrometry

Trace elements in coral and isotopic fractionation of boron during precipitation of inorganic carbonate

Characteristics of Carbon Isotopic Composition of Soluble Organic Components of Deep Source Rocks in Tarim Basin

Significance and prospective of non-traditional isotopic systems in mantle geochemistry

Hydrogen and oxygen isotopic fractionation of gas hydrate formation: Experimental study

Technique of Lutetium Isotopic Analysis by Laser Resonance Ionization Mass Spectrometry

Boron Isotopic Fractionation During the Evaporation of Seawater

Structural significance of the lead isotopic composition of the Shibaqinghao gold deposit, Central Inner Mongolia

Isotopic Analysis Technique in Laser Resonance Ionization Mass Spectrometry

Pb Isotopic Geochemistry of Tibetan Plateau and Its Implications

Lead and sulfur isotopic tracing of the ore-forming material from the Baiyangping copper-silver polymetallic deposit in Lanping, Yunnan

Transition of low-salinity water in the Western Pacific Warm Pool recorded in the nitrogen isotopic ratios of settling particles

Sulfate Concentrations and Carbon Isotopic Compositions as Indicators of Marine Gas Hydrates

Uncertainty Analysis of Absolute Measurement of Isotopic Abundances and Relative Atomic Mass

Geochemical characteristics of sulfur and nitrogen isotopic compositions in rains of Guiyang in summer

Isotopic feature and Uranium-series component dating of the volcanic rocks in Okinawa Trough

Nitrogen content and isotopic characteristics for granites in northeastern China

Re-Os isotopic dating and its geological implication of Baimazhai Cu-Ni sulphide deposit, Yunnan province, China

Adakitic Granites within the NE Jiangxi Ophiolites, South China-- Geochemical and Nd Isotopic Evidence

Airborne uranium contamination--as revealed through elemental and isotopic analysis of tree bark

Machinery & apparatus for isotopic separation & parts thereof

The Feasibility of Measuring Duodenal and Ileal Digesta Flow by a Non-isotopic Dual-marker Method

Isotopic Dating of Oceanic Ferromanganese Crusts: Main Methods and Recent Development

Trace elemental and Sr-Nd isotopic geochemistry of foraminifera shell of the Okinawa Trough

Zircon ages and Hf isotopic composition of gneisses from the Rongcheng ultrahigh-pressure terrain in the Sulu orogenic belt

Stable Isotopic Geochemistry of Three Major Types of Cu-Ag Polymetallic Deposits in the Lanping Basin, Yunnan

Lead isotopic composition of volcanic rocks in the Qoltag tectonic belt, East Tianshan, and its significance

Feasibility Analysis on Isotopic Composition and Mass Measurement for Plutonium

Analytic Potential Energy Functions for Hydrogen Isotopic Molecules

Discrimination of the production sites of ancient pottery by using lead isotopic composition

Analysis of Hydrogen Isotopic Composition in Single Hydrocarbon by Mass Spectrometry

Measurement of Isotopic Element Rb's Abundance Ratio with Optical Pumping Magnetic Resonance Method

Application of Well-to-Well Isotopic Tracer Monitoring Technique in Complex Faulted Block Oilfields

Stomata, Carbon Isotopic Composition of the Plants from the Neogene in West Yunnan and Paleoenvironmental Analysis

Paleoenvironmental Interpretations on Organic Carbon Isotopic Records from Lake Sediments: A Critique

Nitrogen Isotopic Fractionation of Crude Oil during Biodegradation

Study of Groundwater Supply of the Confined Aquifers in the Ejin Basin Based on Isotopic Methods

Experimental Studies on Hydrogen Isotopic Deuterium From Gas to Liquid Phase by Catalytic Exchange

Isotopic Dependence of Production Cross Sections of Superheavy Nuclei in Hot Fusion Reactions

Study on Isotopic Distribution Produced by Nucleus-Nucleus Collisions with Modified SAA Model

The Separation and Stable Isotopic Measurement of Chlorine in Low-Concentration Liquid Sample

Preliminary Study for Trace Element and Isotopic Compositions of Boron in Growing Corals from Sanya Bay, China

Isotopic tracing of ore-forming source materials in the porphyry copper deposit of Dexing, Jiangxi Province

Molecular Stable Carbon Isotopic Compositions of Mono-methyl Branched Alkanes

Zircon Lu-Hf isotopic compositions of ultra-high pressure metamorphic rocks from Dabie Terrain, China

Determination of Isotopic Ratio by Multi-collector Double-focusing Inductively Coupled Plasma Mass Spectrometry

Application of Isotopic Tracing Techniques in Research of Photosynthesis of Plants

Hydrogen isotopic compositions of individual n-alkanes in terrestrial source rocks

Separation and Stable Isotopic Measurement of Lithium in Atmosphere Aerosol Sample

Progress in the application of isotopic fingerprint analysis to food origin traceability

Study on the Sulfur Isotopic Compositions of Lead-Zinc Deposits in Northwestern Guizhou Province

Isotopic Geochemistry of Rock Mass and Ore-vein from Alkali-rich Porphyry Type Deposits in Western Yunnan, China

Correlation between carbon and oxygen isotopic ratios of lacustrine carbonates and types of oil-producing paleolakes

Lead and sulfur isotopic compositions of sulfides from the TAG hydrothermal field, Mid-Atlantic Ridge

Pb Isotopic Compositions and Evolution of Garnet from Bixiling Eclogite by a Stepwise-Leaching Technique

Isotopic Geochemical Characteristics of Low Mature Petroleum in Jinggu Basin

Test Method for Uranium and Plutonium Concentrations and Isotopic Abundances

Oxygen and Hydrogen Isotopic Compositions of Pore Water from Marine Sediments in the Northern South China Sea

Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge

Analysis and Application of Carbon Isotopic Composition of Natural Gases in the Western Sichuan Basin

A semianalytic model for photo-induced isotopic fractionation in simple molecules

Determination of Nanogram Samarium Isotopic Ratio by Mass Spectrometer

Subpolar Mode Water formation traced by neodymium isotopic composition

Study on the aerosol particles characteristic using lithium isotopic tracer

isotopic analysis of uranium by single - standard gas mass - spectrometer method

Sulfur isotopic compositions of Wujiang River water in Guizhou Province during low-flow period

Carbon and Hydrogen Existing Forms and Their Isotopic Compositions in Mantle Fluids

Quantitative Determination of Technique of Kr and Xe by Isotopic Dilution-Inductively Coupled Plasma Mass Spectrometry

Standard Test Method for Analysis of Total and Isotopic Uranium and Total Thorium in Soils by Inductively Coupled Plasma-Mass Spectrometry

Introduce the Closed Well Logging Method for Looking the Isotopic Water Injection Profile

Separation of Boron by Using Ion Exchange Technique for the Isotopic Measurement of Boron in Salt Lake Brine

Pb and Sr isotopic compositions of ancient pottery: A method to discriminate production sites

Progress in the Application of Stable Isotopic Traceability Technique in Meat Product

Isotopic Geochemistry of Geothermal Water in Wuyi Basin, Zhejiang Province

Elementary Analysis on Collection Method of Isotopic Samples of Different Water Samples

O, Sr and Nd Isotopic Tracing of Ore-forming Process in Dexing Porphyry Copper Deposit, Jiangxi Province

Review on isotopic dating in the western part of the North Qilian Mountains

Carbon Isotopic Geochemistry of Crude Oil from Yingjisu Sag in Tarim Basin and Its Implication

Sr Isotopic Compositions and Age Dating of Marine Phosphates from Pacific Seamounts

Shell Strontium Isotopic Chemistry of the Cheniers in the Yellow River Delta