High Precision Measurements of 32S, 33S, and 34S Isotopic Composition by Multiple Collector Inductively Coupled Plasma Mass Spectrometry.

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atmire.migration.oldid2197
dc.contributor.advisorWieser, Michael
dc.contributor.authorAlfayfi, Yahya
dc.date.accessioned2014-05-22T20:09:16Z
dc.date.available2014-11-17T08:00:25Z
dc.date.issued2014-05-22
dc.date.submitted2014en
dc.description.abstractA reliable method was developed for sulfur isotopic composition measurements of sulfur solutions (10 ppm) using a 20 mL cyclonic quartz spray chamber and 50 μL/min (Glass Expansion Inc.) quartz nebulizer coupled to a high mass resolution Multiple Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS). The repeatability of the method was tested which three reference materials (IAEA S-1, IAEA S-2, and IAEA S-3) and the ability to measure sulfur isotopic variations in hair sample was evaluated. The n(34S)/n(32S) and n(33S)/n(32S) isotope amount ratios were measured free from isobaric interferences (e.g. 16O2+ on 32S+ and 32S1H+ on 33S+) and corrected for instrumental mass bias adopting the standard-sample bracketing approach. The reproducibility of IAEA S-2 and IAEA S-3 is typically ± 0.19 ‰ and ±0.52 (2sd) for δ34S and δ33S, respectively and ± 0.30 ‰ and ± 0.53 ‰ (2sd) for δ34S and δ33S, respectively. Freedom from isobaric interferences was verified by plotting δ34S vs. δ33S. Cleanliness of the spray chamber was found to be extremely important to achieve reliable data. A microwave digestion method was developed to analyze sulfur in hair samples. The reproducibility of hair samples was typically ± 0.45 ‰ and ± 0.75 ‰ (2sd) for δ34S and δ33S values, respectively. Achieving a reliable method for δ34S and δ33S measurements will enable now a high precision measurement of sulfur isotopic composition.en_US
dc.identifier.citationAlfayfi, Y. (2014). High Precision Measurements of 32S, 33S, and 34S Isotopic Composition by Multiple Collector Inductively Coupled Plasma Mass Spectrometry. (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26360en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26360
dc.identifier.urihttp://hdl.handle.net/11023/1542
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEducation--Sciences
dc.subject.classificationSulfuren_US
dc.titleHigh Precision Measurements of 32S, 33S, and 34S Isotopic Composition by Multiple Collector Inductively Coupled Plasma Mass Spectrometry.
dc.typemaster thesis
thesis.degree.disciplinePhysics and Astronomy
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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