Heavy metal pollution in Antarctic soils.
Soil samples from 8 sites (7 contaminated and 1 reference) at Marble Point and Scott Base were assessed for heavy metal pollution. Samples were acid leached and analysed by differential pulse anodic stripping voltammetry and electrothermal atomic absorption spectrometry for lead, zinc, cadmium and c...
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University of Canterbury. Department of Chemistry
1993
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ftunivcanter:oai:ir.canterbury.ac.nz:10092/2879 2023-05-15T13:49:08+02:00 Heavy metal pollution in Antarctic soils. Mohamed Amin, Zarinah 1993 application/pdf http://hdl.handle.net/10092/2879 https://doi.org/10.26021/8484 en eng University of Canterbury. Department of Chemistry NZCU http://hdl.handle.net/10092/2879 http://dx.doi.org/10.26021/8484 Copyright Zarinah Mohamed Amin https://canterbury.libguides.com/rights/theses Theses / Dissertations 1993 ftunivcanter https://doi.org/10.26021/8484 2022-09-08T13:40:01Z Soil samples from 8 sites (7 contaminated and 1 reference) at Marble Point and Scott Base were assessed for heavy metal pollution. Samples were acid leached and analysed by differential pulse anodic stripping voltammetry and electrothermal atomic absorption spectrometry for lead, zinc, cadmium and copper. Weathering of these metals from point source contaminants was established. Sequential leaching was then performed to evaluate the potential fate ofthe contaminants using the same techniques. Studies were limited to exchangeable fraction and metal fractions bound to carbonates, oxides and organic matter. In the majority of the samples, the oxide fraction formed the largest sink for extractable lead and zinc. In addition, increase in organic matter was observed for some soils. Low levels of extractable aluminium were found, confirming the limited extent of weathering possible in the cold, arid Antarctic climate. Two modes of origin of soluble salts were inferred from levels of sodium, potassium, calcium and magnesium detected in the soils. Other/Unknown Material Antarc* Antarctic University of Canterbury, Christchurch: UC Research Repository Antarctic Marble Point ENVELOPE(163.833,163.833,-77.433,-77.433) Scott Base ENVELOPE(166.766,166.766,-77.849,-77.849) |
institution |
Open Polar |
collection |
University of Canterbury, Christchurch: UC Research Repository |
op_collection_id |
ftunivcanter |
language |
English |
description |
Soil samples from 8 sites (7 contaminated and 1 reference) at Marble Point and Scott Base were assessed for heavy metal pollution. Samples were acid leached and analysed by differential pulse anodic stripping voltammetry and electrothermal atomic absorption spectrometry for lead, zinc, cadmium and copper. Weathering of these metals from point source contaminants was established. Sequential leaching was then performed to evaluate the potential fate ofthe contaminants using the same techniques. Studies were limited to exchangeable fraction and metal fractions bound to carbonates, oxides and organic matter. In the majority of the samples, the oxide fraction formed the largest sink for extractable lead and zinc. In addition, increase in organic matter was observed for some soils. Low levels of extractable aluminium were found, confirming the limited extent of weathering possible in the cold, arid Antarctic climate. Two modes of origin of soluble salts were inferred from levels of sodium, potassium, calcium and magnesium detected in the soils. |
format |
Other/Unknown Material |
author |
Mohamed Amin, Zarinah |
spellingShingle |
Mohamed Amin, Zarinah Heavy metal pollution in Antarctic soils. |
author_facet |
Mohamed Amin, Zarinah |
author_sort |
Mohamed Amin, Zarinah |
title |
Heavy metal pollution in Antarctic soils. |
title_short |
Heavy metal pollution in Antarctic soils. |
title_full |
Heavy metal pollution in Antarctic soils. |
title_fullStr |
Heavy metal pollution in Antarctic soils. |
title_full_unstemmed |
Heavy metal pollution in Antarctic soils. |
title_sort |
heavy metal pollution in antarctic soils. |
publisher |
University of Canterbury. Department of Chemistry |
publishDate |
1993 |
url |
http://hdl.handle.net/10092/2879 https://doi.org/10.26021/8484 |
long_lat |
ENVELOPE(163.833,163.833,-77.433,-77.433) ENVELOPE(166.766,166.766,-77.849,-77.849) |
geographic |
Antarctic Marble Point Scott Base |
geographic_facet |
Antarctic Marble Point Scott Base |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
NZCU http://hdl.handle.net/10092/2879 http://dx.doi.org/10.26021/8484 |
op_rights |
Copyright Zarinah Mohamed Amin https://canterbury.libguides.com/rights/theses |
op_doi |
https://doi.org/10.26021/8484 |
_version_ |
1766250905116606464 |