Essays about: "MC-ICP-MS"

Found 4 essays containing the word MC-ICP-MS.

  1. 1. Development of a multi-collector inductively coupled plasma massspectrometry method for measurement of stable sulphur isotope ratios in aerosol sulphate

    University essay from Uppsala universitet/Analytisk kemi

    Author : Katerina Rodiouchkina; [2018]
    Keywords : Sulphate aerosol; isotope ratio; sulphur isotope; δ34S and δ33S measurements; MC-ICP-MS; method development; inter-laboratory comparison;

    Abstract : Sulphur stable isotope ratios are useful tracers in geological and environmental studies. They can for example be used to trace the origin of atmospheric sulphate aerosols, because anthropogenic sulphate and natural sulphate have distinguishable δ34S-values (δ34S value of approximately +0 to +8 ‰ for anthropogenic and approximately +12 to +19 ‰ for natural). READ MORE

  3. 2. Behaviour of Boron Isotopes During Magmatic Degassing and Application to B-Rich Volcanic Glassfrom Lesbos, Greece

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Konstantinos Thomaidis; [2017]
    Keywords : boron isotopes; volcanic glass; SIMS; magmatic degassing; Lesbos Island; borisotoper; vulkaniskt glas; SIMS; magmatisk avgasning; Lesbos;

    Abstract : Boron is a fluid mobile trace element and is routinely employed as a tracer of slab-derived fluids in subduction zones since the heavy isotope (11B) preferentially partitions into the fluid phase during slab dehydration. However, it has been shown experimentally that boron isotopes (expressed as δ11B) can fractionate by up to several permil (‰) during subsequent magmatic evolution and degassing at high temperature, calling into doubt the fidelity of boron isotopes in volcanic glass as accurate tracers of slab degassing. READ MORE

  4. 3. [87]Sr/[86]Sr in plagioclase, evidence for a crustal origin of the Hakefjorden Complex, SW Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Alexandra Glommé; [2015]
    Keywords : Plagioclase; Älgön; Sr-isotopes; Sweden; MC-ICP-MS; Hakefjorden complex; geochemistry; SEM; Earth and Environmental Sciences;

    Abstract : The studied intrusion, the Hakefjorden Complex on Älgön is a norite-anorthosite complex situated in the archipelago on the west coast of Sweden. The origin of the intrusion will be deduce through in situ Sr-isotope analysis by MC-ICP-MS (multiple collector- inductively coupled plasma- mass spectrometry) on plagioclase, together with petrographic description and chemical analysis. READ MORE

  5. 4. Zircon U-Pb, Hf and O isotope constraints on the growth versus recycling of continental crust in the Grenville orogen, Ohio, USA

    University essay from Lunds universitet/Geologiska institutionen

    Author : Andreas Petersson; [2010]
    Keywords : zircon; U-Pb; geochronology; Hf-isotopes; O-isotopes; Grenville; crustal growth; North-American craton; zirkon; Hf-isotoper; O-isotopeer; kontinenttillväxt; nordamerikanska kratonen; Earth and Environmental Sciences;

    Abstract : Detta arbetet har hanterat sex olika borrkärnor från den Prekambriska berggrunden i Ohio, USA. Denna berggrund är täckt med 800 – 5000 meter av Paleozoiska avlagringar och på grund av detta vet vi väldigt lite om den. READ MORE