Determination of strontium strontium isotopes. Medical search. Frequent questions

In addition, unlike traditional analytical methods which rely on signal intensity, isotope dilution employs signal ratios. (wikipedia.org)
Multicollector inductively coupled plasma-mass spectrometry (MC-ICP-MS) combines an inductively coupled plasma (ICP) source, a double-focusing sector field mass spectrometer of Nier-Johnson geometry, and multiple collectors for the measurement of isotope ratios. (spectroscopyonline.com)
In addition, Stonehenge lies on the Wessex chalk, characterized by a well-constrained range of strontium isotope ratios (±2 SD: 0.7074-0.7090) allowing for the identification of individuals consuming food beyond this landscape. (sarsen.org)
Mobile strontium taken up by plants from the soil through their root systems is strongly dependent on geographical area and the 87Sr/86Sr ratios link a strontium isotope signature of plant-based food to a specific geographic location and soil. (elgalabwater.com)
This goal has been obtained by combining different inorganic and organic chemical proxies such as trace elements, polycyclic aromatic hydrocarbons, and lead isotope ratios and exploiting both principal component and factor analysis to associate chemical proxies to human-driven contamination processes. (springer.com)
Three short sediment cores have been exploited to this aim and characterized in terms of major and trace elements, polycyclic aromatic hydrocarbons, and lead isotope ratios. (springer.com)
2009 ). The strontium (Sr) isotope ratios in humans mirror the isotope composition of bioavailable Sr in the area where people resided, assuming that they consumed locally procured water and food. (springer.com)
Sjögren and Price 2013a ) has demonstrated a clear distinction between the Sr isotope ratios in the Cambro-Silurian and the Precambrian regions. (springer.com)
Strontium, Nd, and Hf isotope systematics for these lavas and ratios of highly incompatible trace elements point toward a lithospheric source. (umn.edu)
We will use brachiopod shells as archive and determine trace element ratios, stable (δ 18 O and δ 13 C) as well as traditional and non-tradition isotope systems (δ 11 B, δ 26 Mg, δ 44/40 Ca, clumped isotopes Δ 47 ) in order to gain marine environmental proxy information. (baseline-earth.eu)
A weak correlation of δS of bottled waters with Sr/Sr indicates the usefulness of maps of combined Sr and S isotope ratios for groundwater provenance. (tokushima-u.ac.jp)

The practice of cremation has, however, precluded the application of strontium isotope analysis of tooth enamel as the standard chemical approach to study their origin. (sarsen.org)

Recent work by Ladegaard-Pedersen and colleagues 2 presents the results of strontium isotope analyses carried out on six individuals and two faunal remains from the Late Bronze Age cemetery of Simris II in south-eastern Scania, which was primarily in use during the Nordic Period V (c. 900-700 BCE). (elgalabwater.com)
The findings are confronted with the conclusions of stable carbon and nitrogen isotope analyses of human bones. (profil-archeo.pl)
Recent evidence stemming from strontium and oxygen isotope analyses on inland and coastal cemeteries in early and middle Anglo-Saxon England and the near continent suggests that we have vastly underestimated the mobility of early medieval communities, and that the northern seaboard was a vibrant and active zone allowing movement of people and goods from Scandinavia and the near continent right through the early medieval period. (dur.ac.uk)
Age results presented here are slightly younger compared to previous ID isotope ratio mass spectrometry (IRMS) U−Pb dates of ASH-15 but within uncertainties and in agreement with in situ analyses using WC1 as the primary RM. (copernicus.org)
Our results of strontium and biomolecular analyses suggest that mobility increased in the Late Neolithic and Early Bronze Age compared to the earlier parts of the Neolithic. (springer.com)
This will be achieved through a combination of methods involving field collections, systematics, SEM ultrastructural analyses and geochemical trace-isotope analyses. (baseline-earth.eu)

For dating geologic materials, four parent/daughter decay series are especially useful: carbon to nitrogen, potassium to argon, rubidium to strontium, and uranium to lead. (digital-desert.com)
Data for the tephrochronology of Pleistocene volcanic ash, carbon-14, Pb-alpha, common-lead, and U-Pb determinations on uranium ore minerals are not included. (usgs.gov)
Strontium Sr-90 is a radioactive isotope of the heavy metal strontium, Strontium-90 is a by-product of uranium and plutonium fission. (komma-media.ro)

We aim at expanding the application range of isotopic analysis in this context by not only relying on elements that show a quite pronounced natural variation in their isotopic composition as a result of one or more of their isotopes being radiogenic (such as strontium or lead), but by also including elements the isotopic composition of which only shows much more subtle natural variation as a result of isotope fractionation processes. (spectroscopyonline.com)
Strontium is a trace element, with four naturally occurring isotopes (84Sr, 86Sr, 87Sr, 88Sr) out of which three are stable and one (87Sr) is radiogenic, produced by the decay of 87Rb. (elgalabwater.com)
Currently, these questions are addressed by the use of radiogenic isotope analysis. (lup.be)
High precision radiogenic strontium isotope measurements of the modern and glacial ocean : limits on glacial-interglacial variations in continental weathering. (open.ac.uk)

The sedimentary crust favours the exportation of cesium and strontium by preventing its infiltration, while at the same time trapping part of the contamination on its immobile particles. (tib.eu)
The initial concentrations of inactive cesium and strontium were 10 to 15 ppm. (komma-media.ro)

Uses the known half-life of radioactive isotopes of rubidium-87 that decay to isotopes of strontium-87 to determine rock ages. (usgs.gov)

If the measurements have an error of 1 percent, for example, an age determination of 100 million years could actually be wrong by a million years too low or too high. (digital-desert.com)
The use of ultrapure water for the sample preparation in this study illustrates its advantages even for isotope ratio measurements of strontium - a relatively uncommon element. (elgalabwater.com)
After air drying at room temperature good homogeneity of the placed drops was obtained, which led to good repeatability of measurements (calibration slope of 4.21 × 104 ± 0.39 × 104, n = 3) and good linearity (coefficient of determination higher than 0.990). (bvsalud.org)

Consider a natural analyte rich in isotope iA (denoted as A), and the same analyte, enriched in isotope jA (denoted as B). Then, the obtained mixture is analyzed for the isotopic composition of the analyte, RAB = n(iA)AB/n(jA)AB. (wikipedia.org)
The strontium stable isotope composition of global rivers and the implications for the marine δ 88 Sr record. (open.ac.uk)
To explore how environmental factors influence this ratio, we determined the Sr/Sr, sulfur isotope ratio (δS), and elemental composition of 208 commercially available bottled waters in Japan, and compared them with the Sr/Sr values of groundwater, rainwater, rocks, and vegetables from similar localities. (tokushima-u.ac.jp)

Development of the tellurium stable isotope proxy. (open.ac.uk)
In this method, arsenic (isotope mass 75) and gallium (isotope mass 71) or tellurium (isotope mass 126) is measured in urine by ICP-DRC-MS, using argon/hydrogen (90%/10%, respectively) as a reaction gas (Neubauer K. et al. (cdc.gov)

10] Marinin D.V., Brown G.N., Studies of Sorbent/Ion-Exchange Materials for the Removal of Radioactive Strontium from Liquid Radioactive Waste and High Hardness Groundwater , Waste Manage . (nsmsi.ir)

Titanium isotope fractionation in solar system materials. (open.ac.uk)
Mass dependent fractionation of stable chromium isotopes in mare basalts: implications for the formation and differentiation of the Moon. (open.ac.uk)

Frank Vanhaecke, PhD, of the Department of Analytical Chemistry at Ghent University (Ghent, Belgium), has been using this technique for objective provenance determination in the context of archaeometry. (spectroscopyonline.com)
By acquiring multicollector ICP-MS in my research group and by starting to collaborate with colleagues from various other research institutions, primarily the universities of Leuven (Prof. Patrick Degryse) and Brussels (Prof. Philippe Claeys), provenance determination in the context of archaeometry has become one of the major research lines in my research group. (spectroscopyonline.com)
When deploying ICP-MS for objective provenance determination in an archaeometric context, one can either rely on trace-element fingerprinting or on isotope ratio determination. (spectroscopyonline.com)

Isotope dilution analysis is a method of determining the quantity of chemical substances. (wikipedia.org)
In its most simple conception, the method of isotope dilution comprises the addition of known amounts of isotopically enriched substance to the analyzed sample. (wikipedia.org)
Mixing of the isotopic standard with the sample effectively "dilutes" the isotopic enrichment of the standard and this forms the basis for the isotope dilution method. (wikipedia.org)
Isotope dilution is classified as a method of internal standardisation, because the standard (isotopically enriched form of analyte) is added directly to the sample. (wikipedia.org)
Owing to both of these advantages, the method of isotope dilution is regarded among chemistry measurement methods of the highest metrological standing. (wikipedia.org)
Analytical application of the radiotracer method is a forerunner of isotope dilution. (wikipedia.org)
An early application of isotope dilution in the form of radiotracer method was determination of the solubility of lead sulphide and lead chromate in 1913 by George de Hevesy and Friedrich Adolf Paneth. (wikipedia.org)
In the 1930s, US biochemist David Rittenberg pioneered the use of isotope dilution in biochemistry enabling detailed studies of cell metabolism. (wikipedia.org)
Isotope dilution is analogous to the mark and recapture method, commonly used in ecology to estimate population size. (wikipedia.org)
The number of fish native to the lake can be calculated using the following equation: n A = n B × 10 1 = 50 {\displaystyle n_{\mathrm {A} }=n_{\mathrm {B} }\times {\frac {10}{1}}=50} This is a simplified view of isotope dilution but it illustrates the method's salient features. (wikipedia.org)
Isotope dilution is almost exclusively employed with mass spectrometry in applications where high-accuracy is demanded. (wikipedia.org)
For example, all National Metrology Institutes rely significantly on isotope dilution when producing certified reference materials. (wikipedia.org)
In addition to high-precision analysis, isotope dilution is applied when low recovery of the analyte is encountered. (wikipedia.org)
In addition to the use of stable isotopes, radioactive isotopes can be employed in isotope dilution which is often encountered in biomedical applications, for example, in estimating the volume of blood. (wikipedia.org)
This contribution presents a new reference material, ASH-15, a flowstone that is dated here by isotope dilution (ID) thermal ionization mass spectrometry (TIMS) analysis using 37 sub-samples, 1-7 mg each. (copernicus.org)

TEOS xerogel was investigated as adsorbent to removal strontium ion from aqueous solution in batch operations. (nsmsi.ir)
Lithium isotopes as an indicator of primary and secondary processes in unequilibrated meteorites: chondrule cooling and aqueous alteration in CO chondrites. (open.ac.uk)

Yttrium-90 radioisotope as a daughter of Strontium-90 is one of the nuclear fission products and plays an important role in the treatment of malignant tumors in nuclear medicine. (nstri.ir)
Separation of yttrium and strontium was performed in the various simulation conditions and for determining the elements, ICP-AES technique was used. (nstri.ir)

The mass spectrometer permits detection of ions at each mass-to-charge ratio in rapid sequence, which allows the determination of individual isotopes of an element. (cdc.gov)
Each species of atoms or ions in the plasma will emit light with signature spectral emission peaks that can be measured to identify the specific isotopes of a chemical element within. (lbl.gov)

NOTE 2 The limit of detection of most elements will be affected by their natural abundance, ionization behaviour, on abundance of isotope(s) free from isobaric interferences and by contamination (e.g. handling and airborne). (en-standard.eu)
High temperature strontium stable isotope behaviour in the early solar system and planetary bodies. (open.ac.uk)

Age determinations using radioactive isotopes are subject to relatively small errors in measurement--but errors that look small can mean many years or millions of years. (digital-desert.com)

Compilation of isotopic and fission track age determinations, some previously published. (usgs.gov)

How did you become interested in objective determination of provenance using multicollector inductively coupled plasma-mass spectrometry? (spectroscopyonline.com)
Accurate and precise determination of stable Cr isotope compositions in carbonates by double spike MC-ICP-MS. Journal of Analytical Atomic Spectrometry , 26(3) pp. 528-535. (open.ac.uk)
A simple and highly efficient ultrasound assisted membrane-assisted solvent extraction (MASE) pre-treatment method for urine has been developed and validated for the simultaneous determination of twenty-two drugs involved in drug-facilitated sexual assaults (DFSAs) by liquid chromatography-tandem mass spectrometry. (bvsalud.org)

New developments in strontium isotopic analysis of cremated bone reveal that at least 10 of the 25 cremated individuals analysed did not spend their lives on the Wessex chalk on which the monument is found. (sarsen.org)
It includes methodological papers on isotope analysis, innovative applications of several isotope systems to current questions in glass and glaze research, and advances in the knowledge of the economy of vitreous materials. (lup.be)
A straightforward optimized methodology for the study of ancient bones is proposed coupling for the first time trace element determination by ICP-MS (Mg, Mn, Cu, Zn, Sr and Pb were investigated) and statistical data analysis. (icomos.org)
Human mobility patterns in Falbygden were studied by applying strontium isotope analysis combined with archaeological and bioarchaeological data, including mtDNA and sex assessment on a large dataset encompassing 141 individuals from 21 megalithic graves. (springer.com)
SHORT DESCRIPTION This PhD project generates a Phanerozoic marine Mg isotope record, based on the analysis of δ 26 Mg values in calcitic shells of modern and fossil brachiopods. (baseline-earth.eu)

Verification and optimization of micro-destructive proteomics method for sex determination of archaeological human remains[J]. Acta Anthropologica Sinica, 2023, 42(04): 472-487. (anthropol.ac.cn)
Carbon dating definition is - the determination of the age of old material (such as an archaeological or paleontological specimen) by means of. (10patch.com)

As shown in the diagram above, the radioactive isotope carbon-14 originates in the Earths. (10patch.com)
Carbon-14 for age determinations in archaeology, geology, geophysics. (10patch.com)
The other two isotopes in comparison are more common than carbon-14 in the. (10patch.com)

This study shows that for accurate provenance determinations of groundwater, organisms, and agricultural products, it is essential to better quantify the contributions of Sr and S from the atmosphere as well as from rocks and human activities. (tokushima-u.ac.jp)

Direct Real-Time Determination of Compositional Profiles in Structured Materials Using Laser Ablation Instruments: LIBS and LA-ICP-MS ." Applied Industrial Optics: Spectroscopy, Imaging and Metrology (2012). (lbl.gov)

The half-life of a radioactive isotope is the length of time required for exactly one-half of the parent atoms to decay to daughter atoms. (digital-desert.com)

Thus, the geological conditions of Falbygden provide an ideal setting for mobility studies based on Sr isotopes. (springer.com)

The lower limit of quantification is higher in cases where the determination suffers from interferences (see Clause 5) or memory effects (see ISO 17294‑1:2004, 8.2). (iso.org)

In particular, some peculiar trace elements (such as strontium and zinc) are considered indicators of the so-called paleodiet, i.e. whether characterized by vegetables, cereals or meat. (icomos.org)
11] A.L. Rheingold, S. Hues, M.N. Cohen, Strontium and zinc content in bones as an indication of diet, Journal of Chemical Education, 60 (1983) 233-234. (icomos.org)

The technique of comparing the abundance ratio of a radioactive isotope to a reference isotope to determine the age of a material is called. (10patch.com)

Absolute dating by radioisotope methods including the one using carbon isotope 14C are widely applicable in geology, geomorphology, palaeogeography. (10patch.com)

Isotopes are variants of a particular chemical element which differ in neutron number. (wikipedia.org)
Isotopes of an element are atoms that differ from one another only in the number of neutrons in the nucleus. (digital-desert.com)

Strontium is released from bedrock, soil and atmospheric deposits through weathering processes and enters the food chain of humans and animals through drinking water and plant-based food. (elgalabwater.com)

The limit of detection will be higher in cases where the determination is likely to be interfered (see Clause 4) or in case of memory effects (see e.g. (en-standard.eu)

It was apparent that the cesium migrates horizontally in greater proportions than the strontium that pooly fixes on the particles and infiltrates into the first centimeter of the soil. (tib.eu)

14] Yea X., Liua T., Li Q., Liua H., Wu Z., Comparison of Strontium and Calcium Adsorption Onto Composite Magnetic Particles Derived from Fe 3 O 4 and Bis(trimethoxysilylpropyl) amine , Colloids Surf . (nsmsi.ir)

Parents and daughters for some isotopes commonly used to establish numeric ages of rocks. (digital-desert.com)
They also analysed a wide range of environmental samples to establish location-specific strontium isotope baselines in order to assess the origins of the originators of the Simris II samples. (elgalabwater.com)

Technique for dating ancient rocks based on measuring the ratio of the isotopes strontium-87 to ribidium-87 in samples. (usgs.gov)

Strontium in surface waters (rivers, creeks, lakes, ponds) and spring waters, which make up the drinking water sources used by humans and animals, also reflects a locally dependent value of strontium from the catchments of rivers and aquifers. (elgalabwater.com)

SHORT DESCRIPTION This PhD project focuses on the determination of the biomineralization processes and their impact on geochemical proxies in brachiopods in order to evaluate their potential use as a chemical archive for geochemical proxies in ancient seawater. (baseline-earth.eu)

All isotopes of a given element have the same number of protons in each atom. (wikipedia.org)

The strontium isotope signatures of these waters are, therefore, also tied to the geological background of a specific geographic area. (elgalabwater.com)

A radioactive isotope (the parent) of one chemical element naturally converts to a stable isotope (the daughter) of another chemical element by undergoing changes in the nucleus. (digital-desert.com)

英) The geographic distribution of the stable isotope ratio of Sr (Sr/Sr) is useful for identifying the provenance of drinking water, organisms, and agricultural products. (tokushima-u.ac.jp)

The isotope characteristics for both groups are common features of asthenospheric sources. (umn.edu)

Chemicals and Drugs7

Analytical, Diagnostic and Therapeutic Techniques and Equipment5

Anthropology, Education, Sociology and Social Phenomena1

Information Science1

Geographicals1

Ratios11

Application of strontium isotope analysis1

Analyses6

Uranium3

Radiogenic4

Cesium and strontium2

Rubidium1

Measurements3

Composition3

Tellurium2

Radioactive Strontium1

Fractionation2

Provenance determination3

Dilution15

Aqueous2

Yttrium2

Ions2

Behaviour2

Measurement1

Fission1

Spectrometry3

Analysis5

Archaeological2

Carbon-143

Groundwater1

Laser ablation1

Decay1

Mobility1

Interferences1

Zinc2

Abundance1

Geology1

Differ2

Bedrock1

Higher in cases where the determination1

Soil1

Calcium1

Establish2

Technique1

Rivers1

Processes1

Protons1

Waters1

Naturally1

Geographic1

Characteristics1