• I think a good place for you to start is the section working with isotope fractionation in SpecE8. (gwb.com)
  • This review focuses on the speciation analysis of metals, metalloids, and organometals by solid phase extraction before spectrometric detection, and all aspects of analytical speciation such as determination of oxidation states and organometallic compounds. (tubitak.gov.tr)
  • Since speciation analysis is a field of analytical chemistry that is specified by a pronounced interdisciplinary cooperation between different sciences such as biochemistry, medicine, biology, environmental sciences, nutritional sciences and material sciences its terminology is a complex mixture of terms used in all these. (speciation.net)
  • Speciation in analytical identification of one or more existing forms of elements determined by isotopic composition, oxidation state, complex or macromolecular structure. (unizg.hr)
  • The research activities are focused also to the development of analytical methods for sizing and quantification of metal nanoparticles that are used in nanoremediation, medicine and food and to the development of speciation techniques and bio-imaging methods to determine the spatial distribution of target metallospecies in μ-sections of biological tissues. (environment.si)
  • In this context, hyphenated analytical techniques for trace element speciation analyses, in particular HPLC-ICP-MS, have been established in the laboratory. (capture-resources.be)
  • Evaluation of field, greenhouse, and experimental data (macroscopic and microscopic) to investigate human bioavailability, aqueous and solid phase speciation, dissolution, mineralization, precipitation and adsorption mechanisms of organic and inorganic chemicals in soil, water, and sediments. (stevens.edu)
  • Ahmadipour F, Bahramifar N, Ghasempouri SM (2014) Fractionation and mobility of cadmium and lead in soils of Amol area in Iran, using the modified BCR sequential extraction method. (springer.com)
  • Soils potentially vulnerable to phosphorus losses: speciation of inorganic and organic phosphorus and estimation of leaching losses. (phys.org)
  • Faruk Djodjic et al, Soils potentially vulnerable to phosphorus losses: speciation of inorganic and organic phosphorus and estimation of leaching losses, Nutrient Cycling in Agroecosystems (2023). (phys.org)
  • Total Al concentration in the soil and the speciation of Al depend on the pH and the chemical environment of the solution ( Kisnieriené and Lapeikaité, 2015 ). (frontiersin.org)
  • Considerable interest is continuing to be shown in the speciation of metals, metalloids, and organometals due to the dependence of their toxicity and mobility on their chemical form. (tubitak.gov.tr)
  • We develop and employ chemical and biological techniques to follow elements transformations, their speciation and fractionation, including the use of stable and radioactive isotopes as tracers. (environment.si)
  • During the last years, chemical speciation analysis and operational fractionation of trace elements evolved towards a particular focus as it became evident that fluxes of trace elements between environmental compartments cannot be explained and controlled without studying the different forms of occurrence of trace elements in environmental samples. (capture-resources.be)
  • Chemical speciation in the environment. (ijee.net)
  • It's important to note that the software only accounts for equilibrium fractionation effects on isotopic speciation. (gwb.com)
  • Many factors control Hg isotopes fractionation in the environment such as biological or photoreduction processes leading to a specific isotopic fingerprint in the final product. (mercury2017.com)
  • Phosphorus speciation was assessed using X-ray absorption spectroscopy, total and labile extractable P, and X-ray diffraction. (biomedcentral.com)
  • The content of different phosphorus fractions was determined in the sewage specimens using the fractionation scheme proposed by Golterman. (edu.pl)
  • The speciation analysis performed by this method allows to distinguish mineral phosphorus forms adsorbed on the surface of the sludge particles. (edu.pl)
  • For more information and examples, please take a look at section 7.7 Fractionation of stable isotopes in the GWB Essentials Guide and section 3.9 in the GWB Reaction Modeling Guide. (gwb.com)
  • The key research areas in all three domains are organic contaminants, element speciation, traditional and non-traditional stable isotopes, nanoparticles and food safety, traceability and authenticity. (environment.si)
  • Speciation of heavy metals in soil subsamples experimentally loaded with Pb, Cd, Cu and Zn in orthogonal design was investigated by sequential extraction, and operationally defined as water-soluble and exchangeable(SE), weakly specific adsorbed(WSA), Fe and Mn oxides-bound(OX) and organic-bound(ORG).The results show that speciation of heavy metals in the soil subsamples depended on their kinds. (iospress.com)
  • The effect of nutrients speciation and organic carbon fractionation will be studied in systems of various eutrophication levels. (eucc-d.de)
  • Cuong D, Obbard J (2006) Metal speciation in coastal marine sediments from Singapora using a modified BCR-Sequential extraction procedure. (springer.com)
  • Sequential extraction procedure for the speciation of particulate trace elements. (ijee.net)
  • Manganese fractionation using a sequential extraction method to evaluate welders' shielded metal arc welding exposures during construction projects in oil refineries. (cdc.gov)
  • Fractionation, which is used sometimes as speciation, and chromatographic detection are not discussed. (tubitak.gov.tr)
  • EVISA is providing a list of terms used in the area of speciation and fractionation analysis. (speciation.net)
  • Methodology of speciation analysis. (unizg.hr)
  • Coupled systems in speciation (LC-ICP-MS, GC-ICP-MS, FFF-ICP-MS, CE-ICP, LC-ESI-MS). Fractionation analysis methods. (unizg.hr)
  • Dynamic aspects of speciation analysis. (unizg.hr)
  • In speciation analysis, their concentration is determined by the use of isotope dilution inductively coupled plasma mass spectrometry technique. (environment.si)
  • Since "kinds" are probably best approximated by the taxonomic rank of family, rather than species or genus (Wood 2006), speciation within a "kind"/family has clearly occurred post-Flood. (answersresearchjournal.org)
  • The isotope.dat file provided with the installation is a good start but you may have to add to it fractionation factors for species that are not accounted for but expected in your simulation. (gwb.com)
  • If the species is missing in the database, the program assumes a fractionation factor of 0. (gwb.com)
  • Easy to use Oil Speciation Tool to convert assay data into a mixture of compound and pure species. (bre.com)
  • These results represent the first application of diffusion-based modeling to derive material transport, thermal environments, and oxidation-speciation in near-surface nuclear detonation environments. (osti.gov)
  • Theconcentration of some heavy metal speciation in soil subsamples showed good correlation with ionic impulsion of soil, especially for the SE fraction. (iospress.com)
  • Some applications of speciation of metals and metalloids are also presented and discussed in this review. (tubitak.gov.tr)
  • This review covers approximately the last four years (2012-March 2016), offering a critical review of the speciation of metals, metalloids, and organometals. (tubitak.gov.tr)
  • A pretreatment blood sample was not available for molecular speciation or whole-genome sequencing. (cdc.gov)
  • Hence, rather than rely solely on mutation and natural selection to explain the diversity of life within "kinds," many YE creationists have proposed novel mechanisms for speciation. (answersresearchjournal.org)
  • The effects of speciation and diffusive transport of condensing constituents are not well defined in models of fallout formation. (osti.gov)
  • Akcay H, Oguz A, Karapire C (2003) Study of heavy metal pollution and speciation in Buyak Menderes and Gediz river sediments. (springer.com)
  • In this study, I show that mitochondrial DNA relationships within extant families depict linear rates of speciation, a finding consistent with a mechanism of speciation that involves an originally created heterozygous allele pool fractionated by genetic drift. (answersresearchjournal.org)
  • Even before the Flood, during the ~1700 years from the Creation Week to the Deluge, speciation likely occurred. (answersresearchjournal.org)
  • McGee 2012) and the date of the Flood around 4350 years ago, speciation under the YE view is much more rapid than speciation under the evolutionary view. (answersresearchjournal.org)
  • Mass balance calculations were applied to estimate the gas-melt S isotope fractionation factor α g-m . (usgs.gov)
  • In situ fractionation and redox speciation of arse. (fapesp.br)
  • In situ fractionation and redox speciation of As in three different saline-alkaline lakes (green, black and crystalline lakes) in the Pantanal of Nhecolandia (Brazil) were performed by using Diffusive Gradients in Thin films (DGT). (fapesp.br)
  • Proper quantitative interpretation of uranium isotope data hinges, however, on an understanding of isotope fractionation associated with uranium removal to sediments under different redox conditions. (confex.com)
  • Previously published iron speciation and trace metal data indicate that the Sunbury Shale of the Appalachian Basin was deposited across a strong redox gradient, from oxic conditions proximal to the clastic wedge, to ferruginous conditions in the basin trough, to euxinic conditions towards the basin-bounding sill. (confex.com)
  • Arsenic speciation and fucoxanthin analysis from seaweed dietary supplements using LC-MS. Avula B, Wang YH, Khan IA. (nih.gov)
  • An understanding of the aqueous speciation of Al is essential for an evaluation of these processes. (nih.gov)
  • Equilibrium isotope fractionation among different aqueous U species is the most likely explanation for these findings. (asu.edu)
  • These findings suggest that U isotope variations in ancient carbonates could be controlled by changes in the aqueous speciation of seawater U, particularly changes in seawater pH, PCO2, [Ca], or [Mg] concentrations. (asu.edu)
  • Exploring manganese fractionation using a sequential extraction method to evaluate welders' gas metal arc welding exposures during heavy equipment manufacturing. (cdc.gov)
  • Manganese fractionation using a sequential extraction method to evaluate welders' shielded metal arc welding exposures during construction projects in oil refineries. (cdc.gov)
  • 12. Geochemical behavior and fractionation characteristics of rare earth elements (REEs) in riverine water profiles and sentinel Clam (Corbicula fluminea) across watershed scales: Insights for REEs monitoring. (nih.gov)
  • For example, it is not possible to simultaneously test uranium isotope fractionation under oxic, euxinic, and ferruginous marine conditions using modern analogues. (confex.com)
  • Man He, Shaowei Su, Beibei Chen, Bin Hu, Simultaneous speciation of inorganic selenium and tellurium in environmental water samples by polyaniline functionalized magnetic solid phase extraction coupled with ICP-MS detection , Talanta, 207 (2020) 120314. (speciation.net)
  • Cassiterite solubility and tin speciation in supercritical chloride solutions - Wilson, G.A. and Eugster, H.P. (geochemsoc.org)
  • The DGT approach used in the present work was able to perform As speciation and demonstrates that in situ sampling analytical techniques are essential in understanding As speciation and its behavior in complex natural aquatic systems. (fapesp.br)
  • This expectation is confirmed by equilibrium speciation modeling of our experiments. (asu.edu)
  • Both the phytoplankton community and the dissolved organic carbon influence the As speciation and bioavailability in the lakes of Nhecolandia. (fapesp.br)
  • 2014a) were used to investigate the fractionation of sulfur isotopes between fluid and andesitic melt upon magma degassing. (usgs.gov)
  • Based on our experimental results and on previous findings for S speciation in fluid and silicate melt a new model predicting the effect of fO 2 on α g-m (or Δ 34 S g-m ) in andesitic systems at 1030 °C is proposed. (usgs.gov)
  • In order to better understand the environmental impact of contaminated e-waste areas, speciation analysis for Te seems to be mandatory. (speciation.net)
  • Immediately after nasal allergen challenge, Brown Norway rats were exposed by whole body inhalation to either concentrated air particles (CAPs) or filtered air for 8 h (7:00 AM - 3:00 PM). Both ambient and concentrated PM2.5 was assessed for mass, size fractionation, and major component analyses, and trace element content. (nih.gov)
  • The distribution patterns and fractionations can be categorized into primary and secondary types. (bvsalud.org)
  • As pH increases, Mn speciation becomes less sensitive to variations in pe. (wikipedia.org)
  • The distribution and fractionation of persistent organic pollutants (POPs) in different matrices refer to how these pollutants are dispersed and separated within various environmental compartments. (bvsalud.org)
  • This study provides a comprehensive review of the progress in understanding the distribution and fractionation of POPs. (bvsalud.org)
  • However, the secondary distribution and fractionation can only be observed along a temperature gradient, such as latitudinal or altitudinal transects. (bvsalud.org)
  • 238U/235U of dissolved U in these experiments can be fit by Rayleigh fractionation curves with fractionation factors of 1.00007+0.00002/-0.00003, 1.00005 ± 0.00001, and 1.00003 ± 0.00001. (asu.edu)
  • Theoretical calculation of the U isotope fractionation factors between different U species could further test this hypothesis and our proposed fractionation mechanism. (asu.edu)
  • In order to evaluate the reliability of this proxy, we conducted aragonite and calcite coprecipitation experiments at pH ~7.5 and ~ 8.5 to study possible U isotope fractionation during incorporation into these minerals. (asu.edu)
  • Equations are developed to quantificationally study the primary and secondary distributions and fractionations of POPs. (bvsalud.org)
  • A comprehensive fractionation technique was applied to a set of water samples obtained along a real drinking water treatment plant with ozonation and granular activated carbon (GAC) treatment to obtain detailed profiles of dissolved organic matter (DOM) and to evaluate the haloacetic acid (HAA) formation potentials of these DOM fractions. (environmental-expert.com)
  • The Cd concentrations of the growth solutions thereby had no significant impact on Zn isotope fractionation during root-to-shoot translocation. (imperial.ac.uk)
  • Small but significant U isotope fractionation was observed in aragonite experiments at pH ~ 8.5, with heavier U in the solid phase. (asu.edu)
  • An animation is produced by a one-dimensional transport model to simulate conceptively the transport of CB-28 and CB-180, revealing the similarities and differences between the primary and secondary distributions and fractionations. (bvsalud.org)