Trent University Graduate Thesis Collection

Item Description
Identifier
tula:etd
Type
Collection
Language
eng
Extent
1 item
Rights
Copyright for all items in the Trent University Graduate Thesis Collection is held by the author, with all rights reserved, unless otherwise noted.
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Method Development of Compound Specific Isotope Ratio Measurement of Methylmercury in Sediment by Multicollector - ICP - MS

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Year: 2025, 2025
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Willsie, Adelheid, Thesis advisor (ths): Hintelmann, Holger, Degree committee member (dgc): Canario, João, Degree committee member (dgc): Dang, Huy, Degree granting institution (dgg): Trent University
Abstract: <p>This work presents a new online method using gas chromatography coupled to the multicollector-inductively coupled plasma-mass spectrometer for methylmercury (MMHg) isotope ratio measurement. An extraction method using distillation was developed that effectively extracted MMHg from up to 5 grams of sediment, imparting no isotope fractionation on MMHg during extraction. Isotope ratios from… more

Assessing limnological characteristics of subarctic Québec thaw ponds and mercury methylation and methylmercury demethylation within their sediments

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Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Reynolds, Sancha, Thesis advisor (ths): Hintelmann, Holger, Degree committee member (dgc): Canario, João, Degree committee member (dgc): Eimers, Catherine, Degree granting institution (dgg): Trent University
Abstract: <p>Thawing permafrost due to increasingly warm temperatures in northern subarctic regions is releasing mercury. The consequent formation of thaw ponds in the peatland palsa valley of the Sasapimakwananisikw (SAS) river in Whapmagoostui-Kuujjuarapik, Québec may provide a pool for MMHg formation and a potential risk to aquatic and human life, if these ponds facilitate MMHg export through… more
Full Text: ASSESSING LIMNOLOGICAL CHARACTERISTICS OF SUBARCTIC QUÉBEC THAW PONDS AND MERCURY METHYLATION AND METHYLMERCURY DEMETHYLATION WITHIN THEIR SEDIMENTS A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the …