• He joined JCU Geoscience in 2020. (edu.au)
  • Trace metal stable isotope biogeochemistry is the study of the distribution and relative abundances of trace metal isotopes in order to better understand the biological, geological, and chemical processes occurring in an environment. (wikipedia.org)
  • Both stable and radioactive isotopes of trace metals exist, but this article focuses on those that are stable. (wikipedia.org)
  • In order to study trace metal stable isotope biogeochemistry, it is necessary to compare the relative abundances of isotopes of trace metals in a given biological, geological, or chemical pool to a standard (discussed individually for each isotope system below) and monitor how those relative abundances change as a result of various biogeochemical processes. (wikipedia.org)
  • Stable isotope ratios of trace metals can be used to answer a variety of questions spanning diverse fields, including oceanography, geochemistry, biology, medicine, anthropology and astronomy. (wikipedia.org)
  • Trace metal stable isotope biogeochemistry is still an emerging field, yet each trace metal isotope system has clear, powerful applications to diverse and important questions. (wikipedia.org)
  • Inter-comparison of stable iron, copper and zinc isotopic compositions in six reference materials of biological origin. (lifewatch.be)
  • Ore component mobility, transport and mineralization at mid-oceanic ridges: a stable isotopes (Zn, Cu and Fe) study of the Rainbow massif (Mid-Atlantic Ridge 36°14′N). (lifewatch.be)
  • While traditional stable isotope analyses of tooth enamel (e.g., carbon and oxygen) and trace element ratios (e.g. (blueskytccaalibaba.com)
  • Use of Water Stable Isotopes in Hydrological Processes. (irb.hr)
  • Stable Isotope Studies of the Water Cycle and Terrestrial Environments. (irb.hr)
  • Stable isotope and clumped isotope measurements will be obtained in order to study the diagenetic processes that could have affected the shells. (baseline-earth.eu)
  • Bioaccumulation of pharmaceuticals and stimulants in macrobenthic food web in the European Arctic as determined using stable isotope approach. (uliege.be)
  • For a more complete description of these notations, see the isotope notation section in Hydrogen isotope biogeochemistry. (wikipedia.org)
  • The trace metal isotopic composition of a given organism results from a combination of the isotopic compositions of source material (i.e., food and water) and any fractionations imparted during metal ion uptake, translocation and processing inside cells. (wikipedia.org)
  • Furthermore, as different biogeochemical processes vary the relative abundances of the isotopes of a given trace metal, different reaction pools or substances will become enriched or depleted in specific isotopes. (wikipedia.org)
  • A complete understanding of all processes that fractionate trace metal isotopes is presently lacking, but in general, isotopes of trace metals are fractionated during various chemical and biological processes due to kinetic and equilibrium isotope effects. (wikipedia.org)
  • In sediments, oceans, and rivers, distinct trace metal isotope ratios exist due to biological processes such as metal ion uptake and abiotic processes such as adsorption to particulate matter that preferentially remove certain isotopes. (wikipedia.org)
  • Additionally, he conducts methods development research for scalable/commercializable trace metal isotope geochemistry and its environmental applications, applications to human health and disease, and to critical minerals research and exploration. (edu.au)
  • In this study, we show that the nitrogen isotope composition of organic matter preserved in mammalian tooth enamel (δ 15 N enamel ) records diet and trophic position. (blueskytccaalibaba.com)
  • Reconstructing the history of Pb pollution in the Vancouver area, through a systematic study of Pb isotopes in fallen trees from Stanley Park and sediments off the coast of Vancouver Island. (ubc.ca)
  • Testing various pre-treatments on artificially waterlogged and pitch-contaminated wood for strontium isotope analyses. (lifewatch.be)
  • Trace metals are elements such as iron, magnesium, copper, and zinc that occur at low levels in the environment. (wikipedia.org)
  • Iron, copper, and zinc isotopic fractionation in seafloor basalts and hydrothermal sulfides. (lifewatch.be)
  • Additionally, at high temperatures, metals ions can evaporate (and subsequently condense upon cooling), and the relative differences in isotope masses of a given heavy metal leads to fractionation during these evaporation and condensation processes. (wikipedia.org)
  • Additionally, isotopes can have slight variations in their solubility and other chemical and physical properties, which can also drive fractionation. (wikipedia.org)
  • Some metals, such as lithium or zinc, which are usually rare in the environment, can be considerably enriched because of our massive use of high-tech objects, which are little recycled. (anr.fr)
  • Exploration of Pacific Salmon's Ocean Life and anthropogenic impact (trace metals and Pb isotopes). (ubc.ca)
  • Dr Brandon Mahan is a trace element and isotope geochemist, with a focus on trace metals and their isotope systematics in Earth Systems and in Life Sciences. (edu.au)
  • As an advocate for the use of metals and their isotopes in understanding and diagnosing human disease, and in the transition to green energy, Dr Mahan actively seeks R&D projects with external academic, government and industry stakeholders towards aligned methods development and projects. (edu.au)
  • In Januray, 2016 the cultivation of Pajaudina atlantica Logan, 1988 started at the facilities of GEOMAR , where BASE-LiNE Earth investigates the incorporation (partition coefficient) during growth of certain redox sensitive elements in cultured and living brachiopods to also better understand the inherent biomineralization processes and mechanisms, which will enable us to apply the trace element and isotope systems to fossil archives. (baseline-earth.eu)
  • Conventional notations used to mathematically describe isotope abundances, as exemplified here for 56Fe, include the isotope ratio (56R), fractional abundance (56F) and delta notation (δ56Fe). (wikipedia.org)
  • In contrast, the nitrogen (N) isotope ratio of organic material (expressed as δ 15 N vs. AIR in ‰, where δ 15 N = [( 15 N/ 14 N sample / 15 N/ 14 N reference ) − 1] × 1000) derived from bulk tissues or specific compounds (e.g., amino acids) is a widely used proxy for the dietary and trophic behavior of animals in terrestrial and marine food webs. (blueskytccaalibaba.com)
  • Distribution of elements and isotopes in Earth systems with emphasis on the use abundances and isotopic ratios in defining the source and evolution of igneous rocks, the interaction between different reservoirs (mantle, crust and atmosphere) and the role of tectonic settings. (ubc.ca)
  • The ISO2MET project deploys an isotopic method derived from Geosciences to study their impact on marine life, from plankton to predators. (anr.fr)
  • Laboratory study of iron isotope fractionation during dissolution of mineral dust and industrial ash in simulated cloud water. (lifewatch.be)
  • In this role and as part of the Earth and Environmental Science (EES) at JCU, Dr Mahan applies his skillset to drive novel research agendas, while continuously building depth and breadth within the Geosciences by cultivating relationships with complementary research teams across Biomedical Science, Chemistry, Archaeology and Marine Science. (edu.au)
  • Isotopes in environmental and health studies, 57 (2), 142-165 doi:10.1080/10256016.2020.1852235. (irb.hr)
  • A complete understanding of all processes that fractionate trace metal isotopes is presently lacking, but in general, isotopes of trace metals are fractionated during various chemical and biological processes due to kinetic and equilibrium isotope effects. (wikipedia.org)
  • Her Eclogite study integrates concerns from other disciplines, such as Ocean island basalt, Isotope fractionation, Equilibrium fractionation and Radiogenic nuclide. (research.com)
  • Stable isotope ratios of trace metals can be used to answer a variety of questions spanning diverse fields, including oceanography, geochemistry, biology, medicine, anthropology and astronomy. (wikipedia.org)
  • Geochemistry is closely attributed to Isotopes of silicon in her work. (research.com)
  • Uranium isotopes in ancient sedimentary rocks have emerged as a powerful proxy for the oxygenation history of Earth surface environments. (confex.com)
  • 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)
  • Whereas oxygenated environments are plentiful in the modern ocean, studying contemporaneous uranium isotope behavior under a range of low-oxygen conditions is difficult given the paucity modern anoxic basins. (confex.com)
  • For example, it is not possible to simultaneously test uranium isotope fractionation under oxic, euxinic, and ferruginous marine conditions using modern analogues. (confex.com)
  • Here, we present uranium isotope data from coeval Lower Mississippian shales of North America that represent a range of redox conditions. (confex.com)
  • Taken together, these deposits represent the perfect test case for uranium isotope behavior because a full range of redox conditions-oxic, ferruginous, sulfidic, and hypersulfidic-are recorded in coeval units. (confex.com)
  • In this study, we will present uranium isotope data from five cores that intersect the Sunbury Shale in the Appalachian Basin and one core that intersects the Upper Bakken Shale in the Williston Basin. (confex.com)
  • These data will provide valuable new insight on the uranium isotope system, which has emerged as a premier tool for deciphering Earth's oxygenation history. (confex.com)
  • The Use of Mercury Isotope Systematics to Fingerprint and Quantify the Cycling of Anthropogenic and Natural sources of Mercury at the Earth¿s Surface. (europa.eu)
  • We propose to use mercury isotope ratios analysis as a tool to investigate natural and anthropogenic emissions of mercury into the environment. (europa.eu)
  • Ore component mobility, transport and mineralization at mid-oceanic ridges: a stable isotopes (Zn, Cu and Fe) study of the Rainbow massif (Mid-Atlantic Ridge 36°14′N). (lifewatch.be)
  • Both stable and radioactive isotopes of trace metals exist, but this article focuses on those that are stable. (wikipedia.org)
  • In order to study trace metal stable isotope biogeochemistry, it is necessary to compare the relative abundances of isotopes of trace metals in a given biological, geological, or chemical pool to a standard (discussed individually for each isotope system below) and monitor how those relative abundances change as a result of various biogeochemical processes. (wikipedia.org)
  • Trace metal stable isotope biogeochemistry is still an emerging field, yet each trace metal isotope system has clear, powerful applications to diverse and important questions. (wikipedia.org)
  • Volatile elements such as sulfur, zinc, indium and potassium are depleted relative to the Sun in all known inner solar system materials, including Earth, Mars, Moon and differentiated and undifferentiated meteorites. (uni-koeln.de)
  • Redox transfer at subduction zones: insights from Fe isotopes in the Mariana forearc. (lifewatch.be)
  • Her study in Mineralogy is interdisciplinary in nature, drawing from both Seawater, Isotopes of silicon, Great Oxygenation Event and Table. (research.com)
  • Abundances of volatile elements in these rocks can only be determined precisely after the addition of enriched isotope tracers and chemical separation. (uni-koeln.de)
  • Additionally, isotopes can have slight variations in their solubility and other chemical and physical properties, which can also drive fractionation. (wikipedia.org)
  • Iron (Fe) and e.g. zinc (Zn) represent limited but essential micronutrients within the marine biogeochemical cycle in most oceans. (andrea-koschinsky.org)
  • However, lithophile plateau volatile elements (zinc, indium, chlorine, bromine and iodine) are unfractionated from each other relative to CI chondrites. (uni-koeln.de)
  • Her Mantle research incorporates elements of Isotopes of zinc, Mantle wedge, Olivine and Archean. (research.com)
  • Diffusion of isotopes through a solution or material can also result in fractionations, as the lighter mass isotopes are able to diffuse at a faster rate. (wikipedia.org)
  • Isotope Dilution Analysis for Particle Mass Determination Using Single-Particle Inductively Coupled Plasma Time-of-Flight Mass Spectrometry: Application to Size Determination of Silver Nanoparticles. (tofwerk.com)
  • Improving the accuracy of δ 18 O and δ 17 O values of O 2 measured by continuous‑flow isotope-ratio mass spectrometry with a multi-point isotope-ratio calibration. (unibas.ch)
  • For the EU this research theme offers an opportunity to support a socially relevant and urgently needed investigation at the frontier of isotope geosciences. (europa.eu)