Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references (leaves 138-149) Most analytical methods, including ICP-MS, require sample decomposition for elemental analysis of plant materials. Dry ashing was investigated in this study. Factors...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/148498 2023-05-15T17:23:34+02:00 Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees Nyade, Praise Kwasi, 1977- Memorial University of Newfoundland. Faculty of Science 2008 xiv, 166 leaves : ill., maps Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/148498 Eng eng Electronic Theses and Dissertations (19.97 MB) -- http://collections.mun.ca/PDFs/theses/Nyade_Praise.pdf a3157066 http://collections.mun.ca/cdm/ref/collection/theses4/id/148498 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 Black spruce--Analysis Inductively coupled plasma mass spectrometry Plants--Effect of trace elements on Text Electronic thesis or dissertation 2008 ftmemorialunivdc 2015-08-06T19:22:36Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references (leaves 138-149) Most analytical methods, including ICP-MS, require sample decomposition for elemental analysis of plant materials. Dry ashing was investigated in this study. Factors studied included ashing temperature, duration of ashing, rate of temperature rise, and type and nature of ashing vessel on the digestion of plant matrices. The reagents used in the subsequent leaching were also investigated. Samples were ashed at 450°C for 8 hours following a temperature ramp of 18°C/hr, followed by dissolution with HNO3 /HF + H2O2 . Recovery of silicate elements (Al, Co, Cr, Ni, V, and U) was satisfactory. The procedure was validated with reference materials including pine needles, peach leaves, and black spruce. The result also agreed with that obtained using the wet digestion protocol used by ICP-MS group at MUN. Losses mainly through volatilization were observed for Hg, Se, Br, Bi, I, and As. The dry ashing procedure was applied to a biomonitoring study using black spruce samples from a study area in Holyrood, Newfoundland. The results suggest that the elemental sources include rock weathering, sea spray, atmospheric deposition, the thermal electric plant, vehicular exhaust, and municipal waste leachate. Show less <http://search.proquest.com/docview.abstract:hideabstract/AbstractRecord?site=dissertations&t:ac=304429003/abstract/13D5F643C955B47711E/1> Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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ftmemorialunivdc |
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English |
topic |
Black spruce--Analysis Inductively coupled plasma mass spectrometry Plants--Effect of trace elements on |
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Black spruce--Analysis Inductively coupled plasma mass spectrometry Plants--Effect of trace elements on Nyade, Praise Kwasi, 1977- Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
topic_facet |
Black spruce--Analysis Inductively coupled plasma mass spectrometry Plants--Effect of trace elements on |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references (leaves 138-149) Most analytical methods, including ICP-MS, require sample decomposition for elemental analysis of plant materials. Dry ashing was investigated in this study. Factors studied included ashing temperature, duration of ashing, rate of temperature rise, and type and nature of ashing vessel on the digestion of plant matrices. The reagents used in the subsequent leaching were also investigated. Samples were ashed at 450°C for 8 hours following a temperature ramp of 18°C/hr, followed by dissolution with HNO3 /HF + H2O2 . Recovery of silicate elements (Al, Co, Cr, Ni, V, and U) was satisfactory. The procedure was validated with reference materials including pine needles, peach leaves, and black spruce. The result also agreed with that obtained using the wet digestion protocol used by ICP-MS group at MUN. Losses mainly through volatilization were observed for Hg, Se, Br, Bi, I, and As. The dry ashing procedure was applied to a biomonitoring study using black spruce samples from a study area in Holyrood, Newfoundland. The results suggest that the elemental sources include rock weathering, sea spray, atmospheric deposition, the thermal electric plant, vehicular exhaust, and municipal waste leachate. Show less <http://search.proquest.com/docview.abstract:hideabstract/AbstractRecord?site=dissertations&t:ac=304429003/abstract/13D5F643C955B47711E/1> |
author2 |
Memorial University of Newfoundland. Faculty of Science |
format |
Thesis |
author |
Nyade, Praise Kwasi, 1977- |
author_facet |
Nyade, Praise Kwasi, 1977- |
author_sort |
Nyade, Praise Kwasi, 1977- |
title |
Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
title_short |
Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
title_full |
Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
title_fullStr |
Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
title_full_unstemmed |
Method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
title_sort |
method development for the determination of trace elements in biological samples as bioindicators : application to black spruce trees |
publishDate |
2008 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/148498 |
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 (19.97 MB) -- http://collections.mun.ca/PDFs/theses/Nyade_Praise.pdf a3157066 http://collections.mun.ca/cdm/ref/collection/theses4/id/148498 |
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_ |
1766113330103058432 |