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Carbon IsotopesNitrogenIsotopesCarbonSarraceniaceaeNitrogen CompoundsIsotope LabelingNitrogen IsotopesOxygen IsotopesSoilOrganic ChemicalsSeawaterNitratesCarbon DioxideQuaternary Ammonium CompoundsFlavobacteriaceaeAmino AcidsBacteriaMethyl ChlorideAtmosphereGeologic SedimentsFossilsChemical FractionationNitrogen FixationZinc IsotopesPaleontologyPhotosynthesisMethaneVolcanic EruptionsEthylene DichloridesPlant LeavesXanthobacterSulfur IsotopesPinus taedaMolecular Sequence DataPeptococcaceaeCarbon MonoxideCarbon CycleCarbonatesDeuteriumBiomassPlant TranspirationCarbon Compounds, InorganicEcosystemIron IsotopesNanotubes, CarbonEpitestosteroneFlaveriaRhamnusHistory, AncientGas Chromatography-Mass SpectrometryHyphomicrobiumMyrtusBiodegradation, EnvironmentalWaterOceans and SeasDoping in SportsStrontium IsotopesNitrogen CycleNitrogen DioxideBlood Urea NitrogenFresh WaterPoaceaeRainPhosphoenolpyruvate CarboxylasePlant StomataRadioisotope Dilution TechniqueTreesRibulose-Bisphosphate CarboxylaseExtinction, BiologicalTimeClimateCarbon Monoxide PoisoningMass SpectrometryAcetatesPlantsReactive Nitrogen SpeciesChiropteraSulfatesIndicator Dilution TechniquesKineticsGeographyAnaerobiosisDietCarbon RadioisotopesNitrogen OxidesModels, BiologicalAmmoniaSeasonsPII Nitrogen Regulatory ProteinsOxidation-ReductionCarbon TetrachlorideHydrogenCarbon SequestrationFertilizersMercury IsotopesPhylogenyDeuterium OxideEvolution, PlanetaryCarbon Disulfide
Stable isotope ratiosOxygenSulfur isotopeRadiogenic isotopeFractionationDataset containsIsotopic abundanceInorganicAnalysesTotal nitrogenBIOGEOCHEMISTRYVariationsRadioactiveTracersCompositionUraniumMeasurementsVPDBSoilsRatio massPhotosynthetic pathwaySedimentaryProcessesAtmosphericTissuesTerrestrialCollagenBiomassRadiocarbonScientistsAtomsParticlesEarth'sMagneticDietsAnalysisShellsDataMarineAmbientElements2019SamplesMeasureMechanismMaterialLeadArchaeologicalNaturalElement
Stable isotope ratios3
  • Stable isotope ratios are measured using mass spectrometry, which separates the different isotopes of an element on the basis of their mass-to-charge ratio. (wikipedia.org)
  • Korean mariculture Undaria pinnatifida was collected during the months of January, February, March, and December of 2010, as well as from January of 2011 to investigate the changes in the carbon and nitrogen stable isotope ratios (δ 13 C and δ 15 N) and heavy metal with respect to it growth and to identify the factors that influence such changes. (e-algae.org)
  • This data set contains data on particulate organic nitrogen concentration and particulate organic carbon concentration as well as stable isotope ratios for carbon and nitrogen. (ucar.edu)
Oxygen5
Sulfur isotope1
  • Variations in sulfur isotope ratios are used to study the origin of sulfur in an orebody and the temperature of formation of sulfur-bearing minerals as well as a biosignature that can reveal presence of sulfate reducing microbes. (detailedpedia.com)
Radiogenic isotope4
  • Stable isotope geochemistry is largely concerned with isotopic variations arising from mass-dependent isotope fractionation , whereas radiogenic isotope geochemistry is concerned with the products of natural radioactivity . (detailedpedia.com)
  • They are particularly useful to understand mixing processes between different components, because (heavy) radiogenic isotope ratios are not usually fractionated by chemical processes. (detailedpedia.com)
  • Radiogenic isotope tracers are most powerful when used together with other tracers: The more tracers used, the more control on mixing processes. (detailedpedia.com)
  • We work in partnership with ISOTOPIC Ltd . to deliver high precision radiogenic isotope analysis to the oil and gas industry. (huttonltd.com)
Fractionation1
  • Nitrogen isotope ratio tended to be relatively lower when nitrogen content in the blade was higher, probably due to the strengthening of isotope fractionation stemming from plenty of nitrogen in the surrounding environment. (e-algae.org)
Dataset contains3
  • This dataset contains data for stable carbon and nitrogen isotope values of benthic invertebrates from van Veen grab collections made during HLY0802. (ucar.edu)
  • This dataset contains data for stable carbon and nitrogen isotope values of particulate organic matter (POM) collected from the Conductivity Temperature Depth (CTD) rosette. (ucar.edu)
  • This dataset contains data on vertical flux of algal pigments and particulate organic carbon and nitrogen determined by deploying sediment traps under sea ice in the Bering Sea. (ucar.edu)
Isotopic abundance1
  • Variations in isotopic abundance are measured by isotope ratio mass spectrometry , and can reveal information about the ages and origins of rock, air or water bodies, or processes of mixing between them. (detailedpedia.com)
Inorganic1
  • Isotope analysis is the identification of isotopic signature, abundance of certain stable isotopes of chemical elements within organic and inorganic compounds. (wikipedia.org)
Analyses1
  • We return to our previous questions to find new answers with the help of osteological methods - DNA and isotope analyses", says Torbjörn Ahlström, Professor of Historic Osteology. (lu.se)
Total nitrogen3
  • The isotopic δ 13 C%, δ 15 N% values, organic carbon (OC) and total nitrogen contents, and atomic C/N ratios are used as evidence of depositional environment. (gov.pl)
  • Total organic carbon (TOC) and total nitrogen (TN) were measured on acidified samples on the elemental analyzer. (umich.edu)
  • TN (%): Total nitrogen of the acidified samples (unit: wt. (umich.edu)
BIOGEOCHEMISTRY1
  • This study investigates natural variation in C and N stable isotopes among plant species in two western Amazon flooded forests with contrasting watershed biogeochemistry (white-water várzea-forest and black-water igapó-forest). (scielo.br)
Variations2
  • It is also important for the researcher to know the variations of isotopes within individuals, between individuals, and over time. (wikipedia.org)
  • Isotope geochemistry is an aspect of geology based upon the study of natural variations in the relative abundances of isotopes of various elements . (detailedpedia.com)
Radioactive7
  • Carbon has two stable isotopes , 12 C and 13 C, and one radioactive isotope, 14 C . (detailedpedia.com)
  • Deemed the name, carbon 14 in the age range of c14 dating: radioactive isotope of carbon-14 originates in 20th. (iniscommunication.com)
  • Background: carbon dating, based upon the radioactive isotope is the shell of radiocarbon years. (iniscommunication.com)
  • When neutrons in the radioactive dating is called radiocarbon dating pronunciation, meaning that depends upon the isotope carbon-14. (iniscommunication.com)
  • In an exponential equation in dating: radioactive dating is a piece of radiocarbon dating pronunciation, a known as radiocarbon dating, the decomposition of carbon is. (iniscommunication.com)
  • There's quite a radioactive decay begins to determine the combustion stage is carbon-14 in use logarithms to estimate the lighter isotopes. (iniscommunication.com)
  • Organic material, any material - but discrepancies can be radioactive carbon. (iniscommunication.com)
Tracers1
Composition2
Uranium1
  • four of them understanding wells, and uranium isotope activity was greater than the MCL-US for one understanding well. (usgs.gov)
Measurements2
  • It begins with isotope ratio measurements. (icr.org)
  • Measurements of isotopic ratios is an especially daunting undertaking, mainly because of the extreme weakness of the spectral signatures (emissions) of the less abundant species like carbon-13, nitrogen-15, etc. (eso.org)
VPDB1
  • The stable carbon isotope ratio, δ 13 C , is measured against Vienna Pee Dee Belemnite (VPDB). (detailedpedia.com)
Soils1
  • 2015. Assessing changes in carbon stocks of Scottish soils: lessons learnt . (hutton.ac.uk)
Ratio mass1
  • The bulk sedimentary d15N was measured on unacidified samples with isotope ratio mass spectrometer (IRMS). (umich.edu)
Photosynthetic pathway2
  • Maize synthesizes carbon using a distinctive photosynthetic pathway, which is evident isotopically in people that consume this important cultigen. (noozhawk.com)
  • During photosynthesis, organisms using the C 3 pathway show different enrichments compared to those using the C 4 pathway , allowing scientists not only to distinguish organic matter from abiotic carbon, but also what type of photosynthetic pathway the organic matter was using. (detailedpedia.com)
Sedimentary1
  • Three Neogene sedimentary formations reflecting different depositional environments have been investigated for the purpose of diagnosing the isotopic source of the sedimentary organic matter and their palaeoenvironmental significance in discriminating between marine and terrestrial environments. (gov.pl)
Processes2
  • Nearly 40 years of work in this area of natural-abundance stable-isotope science and service across several industries has led to a deep knowledge and insight into the chemistry which has evolved into patented processes for protecting intellectual-property and product claims," commented Dr John P. Jasper, Chief Scientific Officer and founder of MIT. (innovationintextiles.com)
  • This, and many other copepod-driven processes, help transport carbon down into the deep sea, where it may be locked away from the atmosphere for hundreds, or even thousands of years - thereby helping to regulate global climate. (exeter.ac.uk)
Atmospheric1
Tissues1
  • It turns back into nitrogen usually long after it filters back down to Earth and enters plant and animal tissues. (icr.org)
Terrestrial3
  • The δ 13 C, δ 15 N and C/N values indicate that the organic matter in the Euphrates Formation is of marine origin, whereas it is of terrestrial origin (fluviatile) in the Injana and Dibdibba formations. (gov.pl)
  • the shallow-marine environment (Euphrates Formation) was characterized by a low C/N ratio (9) due to the algal-derived organic matter with limited input of terrestrial organic matter. (gov.pl)
  • Carbon isotope ratios can also be used to distinguish between marine, freshwater, and terrestrial food sources. (wikipedia.org)
Collagen3
  • Carbon isotope ratios can be measured in bone collagen or bone mineral (hydroxylapatite), and each of these fractions of bone can be analysed to shed light on different components of diet. (wikipedia.org)
  • The carbon in bone collagen is predominantly sourced from dietary protein, while the carbon found in bone mineral is sourced from all consumed dietary carbon, included carbohydrates, lipids, and protein. (wikipedia.org)
  • But these are special sites because they provide dry shelter from the elements that helps preserve bones that we were able to extract collagen from for nitrogen and carbon isotope analysis. (noozhawk.com)
Biomass1
  • The predicted contribution of different carbon sources to the consumer biomass changed between models as a function of source variability. (scielo.br)
Radiocarbon4
  • Even when a radiocarbon laboratory measures very precise isotope ratios in a sample, any age estimate from the formula will only be as good as the four assumptions that went into it. (icr.org)
  • Question of radiocarbon dating has been one of carbon 14 dating is a radiocarbon is widely used by normal means. (iniscommunication.com)
  • Question of obtaining absolute dating is a piece of an age of an organic materials, carbon, and anderson radiocarbon-dated the fossil. (iniscommunication.com)
  • Archaeologists use carbon 14 to give an organic materials, radiocarbon dating requires organic and found in all. (iniscommunication.com)
Scientists3
  • Many reporters and scientists treat carbon dates like facts. (icr.org)
  • Scientists must use math formulas to convert isotope ratios into age estimates. (icr.org)
  • And how much carbon-14 dating can be dated by scientists. (iniscommunication.com)
Atoms1
  • Fewer carbon-14 atoms in plant and animal specimens (a lower carbon-14 ratio) would give them far more carbon years than they deserve. (icr.org)
Particles1
  • The astronomers conclude that part of the cometary nitrogen is trapped in macromolecules attached to dust particles. (eso.org)
Earth's1
  • 1. Carbon-14 has been decaying at basically the same rate throughout Earth's history. (icr.org)
Magnetic1
  • Those who treat very old carbon years as if they were actual years must assume that the Flood and its drop in magnetic field strength never happened. (icr.org)
Diets1
  • Bones in the Neotropics typically degrade because of heat and humidity, but these rock shelters preserved the skeletal material well enough to measure stable isotopes revealing the diets of these people prior to death. (noozhawk.com)
Analysis5
  • Isotope analysis has widespread applicability in the natural sciences. (wikipedia.org)
  • Isotope analysis has been particularly useful in archaeology as a means of characterization. (wikipedia.org)
  • Particularly in the Bronze Age Mediterranean, lead isotope analysis has been a useful tool for determining the sources of metals and an important indicator of trade patterns. (wikipedia.org)
  • Applied DNA Sciences, a leader in polymerase chain reaction (PCR)-based DNA manufacturing for product authenticity and traceability solutions, has entered into a partnership with Molecular Isotope Technologies (MIT), a pioneer and leader in the application of natural-abundance stable-isotopic analysis provided under the trademarks Nature's Fingerprint and IsoPedigree . (innovationintextiles.com)
  • These devices are used in the analysis of organic carbon and nitrogen isotopes. (ua.edu)
Shells1
Data3
  • Interpretation of lead isotope data is, however, often contentious and faces numerous instrumental and methodological challenges. (wikipedia.org)
  • Nitrogen isotope data has also been used to measure the amount of exchange of air between the stratosphere and troposphere using data from the greenhouse gas N 2 O . (detailedpedia.com)
  • The high quality of the data obtained of this moving 9th-magnitude object has permitted a determination of the cometary abundance of various elements and their isotopes [2] . (eso.org)
Marine1
  • A significant variation in the stable carbon and nitrogen isotope compositions between fluvial and marine deposits was recorded. (gov.pl)
Ambient1
Elements3
  • Because the lead isotopes are created by decay of different transuranic elements, the ratios of the four lead isotopes to one another can be very useful in tracking the source of melts in igneous rocks , the source of sediments and even the origin of people via isotopic fingerprinting of their teeth, skin and bones. (detailedpedia.com)
  • Knowledge of the abundance of the stable isotopes [2] of the light elements in different solar system objects provides critical clues to the origin and early evolution of these objects and of the system as a whole. (eso.org)
  • Carol-Ann specialises in looking at the isotopic signature of rocks and minerals using Thermal Ionisation Mass Spectrometer (TIMS) and has extensive experience in preparing and analysing rocks, muds, drill cuttings, waters, plants and soil extracts for isotopes of elements such as Strontium, Samarium, Neodymium, Calcium, Magnesium and Potassium. (huttonltd.com)
20191
Samples3
  • If Noah's Flood actually happened about 4,500 years ago, as the Scriptures record, then it would have affected, and possibly steamrolled, carbon-14 ratios in very old samples. (icr.org)
  • TOC (%): Total organic carbon of the acidified samples (unit: wt. (umich.edu)
  • Among samples with the same grow-out period, those that weighed more tended to have higher δ 13 C suggesting a close association between the carbon isotope ratio and growth rate of U. pinnatifida . (e-algae.org)
Measure1
  • In 2017 we invested in a state of the art, Isotopx Phoenix TIMS which will measure isotopes with the highest sensitivity and ratio precision. (huttonltd.com)
Mechanism1
  • 2022. Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel. (ornl.gov)
Material3
  • The lowland Neotropics is not kind to organic material," Kennett said. (noozhawk.com)
  • A better understanding of the origins of the cometary material (in particular the HCN and CN molecules [3] ) and the connection with heavier organic molecules is highly desirable. (eso.org)
  • Jump to nitrogen 14 in the unstable isotope carbon-14 dating translation, which has been the rate of organic material. (iniscommunication.com)
Lead1
  • Lead isotope geochemistry is useful for providing isotopic dates on a variety of materials. (detailedpedia.com)
Archaeological1
  • On the only thousands of carbon decays back into a series of what is continuously formed from archaeological sites. (iniscommunication.com)
Natural2
  • Este estudio investiga la variación natural en isótopos estables de C y N entre especies de plantas en dos bosques inundables de la Amazonía noroccidental con biogeoquímica de cuenca contrastantes (várzea-bosques de aguas blanca e igapó-bosques de aguas negras). (scielo.br)
  • We expect our enhanced portfolio will serve to further our penetration of key markets such as textiles, adding another level of identity for organic cotton, among other natural materials. (innovationintextiles.com)
Element1