Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings
Thesis (M.Sc.)--Memorial University of Newfoundland, 2010. Environmental Science Includes bibliographical references (leaves 122-127) A method to optimize an acid digestion procedure for High Field Strength Elements (HFSE) was developed, using mine tailing samples of variable ages (0-10 years old),...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/71769 2023-05-15T17:23:33+02:00 Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings Vivanco, Claudia, 1995- Memorial University of Newfoundland. Dept. of Environmental Science 2009 xiv, 127 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/71769 Eng eng Electronic Theses and Dissertations (15.50 MB) -- http://collections.mun.ca/PDFs/theses/Vivanco_Claudia.pdf a3302013 http://collections.mun.ca/cdm/ref/collection/theses4/id/71769 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Basalt rocks--Analysis--Technique Inductively coupled plasma mass spectrometry Rare earth metals Transition metals--Analysis--Technique Text Electronic thesis or dissertation 2009 ftmemorialunivdc 2015-08-06T19:22:11Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2010. Environmental Science Includes bibliographical references (leaves 122-127) A method to optimize an acid digestion procedure for High Field Strength Elements (HFSE) was developed, using mine tailing samples of variable ages (0-10 years old), provided by Iron Ore Company of Canada (IOC). The study included experiments that aimed to find the optimal length of digestion to obtain improved recoveries for HFSE. Different acid mixtures were tested in an attempt to accomplish better digestion of the samples, and to obtain a more stable solution. For the purpose of this research, a stable solution is defined as a solution that would maintain analytes in solution over time. This study concluded that the initial parameters of the acid digestion procedure were the most effective. -- The method development generated large data sets for the elements determined using this procedure. These data were analyzed to assess the environmental mobility of HFSE and REE in the samples. Samples had low concentrations of HFSE and Rare Earth Elements (REE) elements (i.e, Zr 5 ppm, Nb 1.7 ppm, Hf 0.1 ppm, etc). These tailing samples were exposed to weathering since their generation and stored in a dump, located in Labrador. The mobility investigation consisted of exhaustive comparisons of sample elemental concentrations plotted according to their ages. Unexpected variations, suggested the use of different ores or gain/loss of mass that would concentrate/dilute these elements. To understand these variations, sample concentrations were normalized, displaying parallel trends similar to igneous or sedimentary rocks. From these observations, it was concluded that HFSE or REE were not selectively affected during weathering and ores with common HFSE and REE characteristics were used. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Newfoundland Canada |
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Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Basalt rocks--Analysis--Technique Inductively coupled plasma mass spectrometry Rare earth metals Transition metals--Analysis--Technique |
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Basalt rocks--Analysis--Technique Inductively coupled plasma mass spectrometry Rare earth metals Transition metals--Analysis--Technique Vivanco, Claudia, 1995- Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
topic_facet |
Basalt rocks--Analysis--Technique Inductively coupled plasma mass spectrometry Rare earth metals Transition metals--Analysis--Technique |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2010. Environmental Science Includes bibliographical references (leaves 122-127) A method to optimize an acid digestion procedure for High Field Strength Elements (HFSE) was developed, using mine tailing samples of variable ages (0-10 years old), provided by Iron Ore Company of Canada (IOC). The study included experiments that aimed to find the optimal length of digestion to obtain improved recoveries for HFSE. Different acid mixtures were tested in an attempt to accomplish better digestion of the samples, and to obtain a more stable solution. For the purpose of this research, a stable solution is defined as a solution that would maintain analytes in solution over time. This study concluded that the initial parameters of the acid digestion procedure were the most effective. -- The method development generated large data sets for the elements determined using this procedure. These data were analyzed to assess the environmental mobility of HFSE and REE in the samples. Samples had low concentrations of HFSE and Rare Earth Elements (REE) elements (i.e, Zr 5 ppm, Nb 1.7 ppm, Hf 0.1 ppm, etc). These tailing samples were exposed to weathering since their generation and stored in a dump, located in Labrador. The mobility investigation consisted of exhaustive comparisons of sample elemental concentrations plotted according to their ages. Unexpected variations, suggested the use of different ores or gain/loss of mass that would concentrate/dilute these elements. To understand these variations, sample concentrations were normalized, displaying parallel trends similar to igneous or sedimentary rocks. From these observations, it was concluded that HFSE or REE were not selectively affected during weathering and ores with common HFSE and REE characteristics were used. |
author2 |
Memorial University of Newfoundland. Dept. of Environmental Science |
format |
Thesis |
author |
Vivanco, Claudia, 1995- |
author_facet |
Vivanco, Claudia, 1995- |
author_sort |
Vivanco, Claudia, 1995- |
title |
Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
title_short |
Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
title_full |
Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
title_fullStr |
Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
title_full_unstemmed |
Optimization of an acid digestion for HFSE analyses using ICP-MS : application to the assessment on environmental mobility of HFSE and REE in iron ore tailings |
title_sort |
optimization of an acid digestion for hfse analyses using icp-ms : application to the assessment on environmental mobility of hfse and ree in iron ore tailings |
publishDate |
2009 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/71769 |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (15.50 MB) -- http://collections.mun.ca/PDFs/theses/Vivanco_Claudia.pdf a3302013 http://collections.mun.ca/cdm/ref/collection/theses4/id/71769 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
1766113264412917760 |