Use of LA-ICP-MS to analyse dental enamel in order to locate the geographical origin of teeth

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dc.contributor.advisorManley-Harris, Merilyn
dc.contributor.advisorTe Awekotuku, Ngahuia
dc.contributor.authorCameron, Nicola
dc.date.accessioned2011-03-30T01:56:44Z
dc.date.available2011-03-30T01:56:44Z
dc.date.issued2011
dc.date.updated2011-02-08T22:01:16Z
dc.description.abstractThe investigation reported here involved the analysis of possum tooth samples by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) to determine whether or not the data obtained from the elemental composition of the dental enamel was sufficient to differentiate samples according to their geographical origin. The possum jaws were processed, and the teeth removed and cleaned and mounted on slides before analyses could be carried out. A LA-ICP-MS method was developed in order to obtain data for the tooth enamel. This involved optimising specific laser parameters, such as laser spot size, laser power, and acquisition time. It was also essential to determine the best calibration standard for the project, which proved to be NIST 612. Data was collected from samples from across ten different regions. The data was statistically analysed by Principal component analysis (PCA) and Linear Discriminant Analysis (LDA). It was found that some regions overlapped in the PCA, meaning they could not be 100% separated however, many regions could be distinguished, and it was determined, by that using LDA, 75.75% of the samples could be correctly grouped into their regions of origin. A further analysis was conducted once several regions were removed (for historical or statistical reasons), which greatly improved the results. 82.9% of the samples could be placed into their region of origin.
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet
dc.format.mimetypeapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet
dc.identifier.citationCameron, N. (2011). Use of LA-ICP-MS to analyse dental enamel in order to locate the geographical origin of teeth (Thesis, Master of Science (MSc)). University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/5221en
dc.identifier.urihttps://hdl.handle.net/10289/5221
dc.language.isoen
dc.publisherUniversity of Waikato
dc.rightsAll items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectenamel
dc.subjectNew Zealand
dc.subjectLA-ICP-MS
dc.subjectteeth
dc.subjectLDA
dc.titleUse of LA-ICP-MS to analyse dental enamel in order to locate the geographical origin of teethen
dc.typeThesis
pubs.place-of-publicationHamilton, New Zealanden_NZ
thesis.degree.grantorUniversity of Waikato
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (MSc)en_NZ
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