Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions
The Dates provided in temporal coverage are approximate only, and represent the beginning and end of the 2005 - 2008 Antarctic seasons. The latitudes and longitudes provided in spatial coverage are approximate only. This project only dealt with the development of a technique, and Antarctic trials or...
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Format: | Dataset |
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Australian Ocean Data Network
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Online Access: | https://researchdata.ands.org.au/diffusive-gradients-films-metal-ions/686554 https://data.aad.gov.au/metadata/records/ASAC_2665 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2665 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3462 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 |
id |
ftands:oai:ands.org.au::686554 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
environment oceans EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC CONTAMINANT LEVELS/SPILLS EARTH SCIENCE HUMAN DIMENSIONS ENVIRONMENTAL IMPACTS MARINE ENVIRONMENT MONITORING ION EXCHANGE SOLID EARTH GEOCHEMISTRY GEOCHEMICAL PROCESSES ESTUARY contaminants heavy metals thin films diffusive gradients SHIPS LABORATORY AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
environment oceans EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC CONTAMINANT LEVELS/SPILLS EARTH SCIENCE HUMAN DIMENSIONS ENVIRONMENTAL IMPACTS MARINE ENVIRONMENT MONITORING ION EXCHANGE SOLID EARTH GEOCHEMISTRY GEOCHEMICAL PROCESSES ESTUARY contaminants heavy metals thin films diffusive gradients SHIPS LABORATORY AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
topic_facet |
environment oceans EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC CONTAMINANT LEVELS/SPILLS EARTH SCIENCE HUMAN DIMENSIONS ENVIRONMENTAL IMPACTS MARINE ENVIRONMENT MONITORING ION EXCHANGE SOLID EARTH GEOCHEMISTRY GEOCHEMICAL PROCESSES ESTUARY contaminants heavy metals thin films diffusive gradients SHIPS LABORATORY AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
The Dates provided in temporal coverage are approximate only, and represent the beginning and end of the 2005 - 2008 Antarctic seasons. The latitudes and longitudes provided in spatial coverage are approximate only. This project only dealt with the development of a technique, and Antarctic trials or data collection never took place. Metadata record for data from ASAC Project 2665 See the link below for public details on this project. The Antarctic environment with its harsh climatic conditions, minimal human activity and its unique ecosystems is unlike any of the World's other environments. As such, it is important that an understanding of the Antarctic environment is developed in order to gain a full appreciation of the impacts of human activities in Antarctica and to determine the most effective means to remediate and protect the Antarctic environment. To achieve these goals, new sensitive and selective techniques for sampling metal contaminant levels in marine sediments are being developed. The project is not an environmental study of the Antarctic environment (ie no metal concentrations in water or sediments), but rather the development of an analytical technique for use in Antarctica. We are still in the process of developing this technique and much of the development phase has involved qualitative assessment rather than generating quantitative data. We are currently trialling the technique in the lab and will conduct field trials in the Derwent Estuary. Taken from the abstract of the referenced paper: A novel binding phase was developed for use in diffusive gradients in thin-film (DGT) sampling for Cu(II) by employing methylthymol blue as a chelating and chromogenic agent. Methylthymol blue was adsorbed onto beads of Dowex 1x8 resin (200-400 mesh) and the resin beads were then immobilised onto an adhesive disc. Analysis of exposed binding discs by either UV-vis spectrophotometry or computer imaging densitometry provided robust quantification of adsorbed Cu(II) in the 0.2-1 micro gcm-2 range, allowing detection at micro gL-1 concentrations in the test solution (ca. 17 micro gL-1 for a 24 h deployment), and in good agreement with established DGT theory. The method was shown to be a potential replacement for binding phases based on Chelex 100 where a colorimetric response to a specific metal is desired. |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
title_short |
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
title_full |
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
title_fullStr |
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
title_full_unstemmed |
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions |
title_sort |
diffusive gradients in thin films (dgt) methodology for selective and spatially discriminating binding of metal ions |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/diffusive-gradients-films-metal-ions/686554 https://data.aad.gov.au/metadata/records/ASAC_2665 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2665 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3462 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 |
op_coverage |
Spatial: northlimit=-66.0; southlimit=-67.0; westlimit=110.0; eastLimit=111.0 Spatial: northlimit=-42.75; southlimit=-43.25; westlimit=147.0; eastLimit=147.5 Temporal: From 2005-10-01 to 2008-03-31 |
long_lat |
ENVELOPE(110.0,111.0,-66.0,-67.0) ENVELOPE(147.0,147.5,-42.75,-43.25) |
geographic |
Antarctic New Zealand The Antarctic |
geographic_facet |
Antarctic New Zealand The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/diffusive-gradients-films-metal-ions/686554 09531c34-af60-4298-b0c1-10a0f6f11e34 https://data.aad.gov.au/metadata/records/ASAC_2665 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2665 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3462 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 |
_version_ |
1766245683132628992 |
spelling |
ftands:oai:ands.org.au::686554 2023-05-15T13:46:56+02:00 Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-66.0; southlimit=-67.0; westlimit=110.0; eastLimit=111.0 Spatial: northlimit=-42.75; southlimit=-43.25; westlimit=147.0; eastLimit=147.5 Temporal: From 2005-10-01 to 2008-03-31 https://researchdata.ands.org.au/diffusive-gradients-films-metal-ions/686554 https://data.aad.gov.au/metadata/records/ASAC_2665 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2665 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3462 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 unknown Australian Ocean Data Network https://researchdata.ands.org.au/diffusive-gradients-films-metal-ions/686554 09531c34-af60-4298-b0c1-10a0f6f11e34 https://data.aad.gov.au/metadata/records/ASAC_2665 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2665 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3462 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 https://data.aad.gov.au environment oceans EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC CONTAMINANT LEVELS/SPILLS EARTH SCIENCE HUMAN DIMENSIONS ENVIRONMENTAL IMPACTS MARINE ENVIRONMENT MONITORING ION EXCHANGE SOLID EARTH GEOCHEMISTRY GEOCHEMICAL PROCESSES ESTUARY contaminants heavy metals thin films diffusive gradients SHIPS LABORATORY AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:07:36Z The Dates provided in temporal coverage are approximate only, and represent the beginning and end of the 2005 - 2008 Antarctic seasons. The latitudes and longitudes provided in spatial coverage are approximate only. This project only dealt with the development of a technique, and Antarctic trials or data collection never took place. Metadata record for data from ASAC Project 2665 See the link below for public details on this project. The Antarctic environment with its harsh climatic conditions, minimal human activity and its unique ecosystems is unlike any of the World's other environments. As such, it is important that an understanding of the Antarctic environment is developed in order to gain a full appreciation of the impacts of human activities in Antarctica and to determine the most effective means to remediate and protect the Antarctic environment. To achieve these goals, new sensitive and selective techniques for sampling metal contaminant levels in marine sediments are being developed. The project is not an environmental study of the Antarctic environment (ie no metal concentrations in water or sediments), but rather the development of an analytical technique for use in Antarctica. We are still in the process of developing this technique and much of the development phase has involved qualitative assessment rather than generating quantitative data. We are currently trialling the technique in the lab and will conduct field trials in the Derwent Estuary. Taken from the abstract of the referenced paper: A novel binding phase was developed for use in diffusive gradients in thin-film (DGT) sampling for Cu(II) by employing methylthymol blue as a chelating and chromogenic agent. Methylthymol blue was adsorbed onto beads of Dowex 1x8 resin (200-400 mesh) and the resin beads were then immobilised onto an adhesive disc. Analysis of exposed binding discs by either UV-vis spectrophotometry or computer imaging densitometry provided robust quantification of adsorbed Cu(II) in the 0.2-1 micro gcm-2 range, allowing detection at micro gL-1 concentrations in the test solution (ca. 17 micro gL-1 for a 24 h deployment), and in good agreement with established DGT theory. The method was shown to be a potential replacement for binding phases based on Chelex 100 where a colorimetric response to a specific metal is desired. Dataset Antarc* Antarctic Antarctica Research Data Australia (Australian National Data Service - ANDS) Antarctic New Zealand The Antarctic ENVELOPE(110.0,111.0,-66.0,-67.0) ENVELOPE(147.0,147.5,-42.75,-43.25) |