TemperateReefBase Geonetwork Catalogue
Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions
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.
Simple
Identification info
- Alternate title
- Diffusive Gradients in Thin Films (DGT) Methodology for Selective and Spatially Discriminating Binding of Metal Ions
- Date (Publication)
- 2006-07-27
- Edition
- 1
Originator
Publisher
Principal investigator
Collaborator
- Name
- CAASM Metadata
- Other citation details
- Restricted access
- Status
- Completed
Custodian
- Topic category
-
- Environment
- Oceans
Extent
))
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2005-10-01 2008-03-31
- Title
- Direct colorimetric detection of copper(II) ions in sampling using diffusive gradients in thin-films
- Date (Publication)
- 2010
- Citation identifier
- 662
- Citation identifier
- doi:10.1016/j.aca.2009.12.041
Author
- Name
- Analytica Chimica Acta
- Page
- 44-50
- Title
- Development and Characterisation of a Colorimetric Binding Phase for the Diffusive Gradients in Thin Films Technique
- Date (Publication)
- 2010
Author
- Name
- PhD Thesis, University of Tasmania
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
- EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS
- EARTH SCIENCE > OCEANS > MARINE ENVIRONMENT MONITORING
- EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROCESSES > ION EXCHANGE
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY
- Keywords
-
- contaminants
- benthic
- heavy metals
- thin films
- diffusive gradients
- NASA/GCMD Earth Science Keywords
-
- SHIPS
- LABORATORY
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- CEOS
- AMD
- NASA/GCMD Earth Science Keywords
-
- CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA
- CONTINENT > ANTARCTICA
- GEOGRAPHIC REGION > POLAR
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- A pdf copy of the referenced paper is available for download to AAD staff only.
Resource constraints
- File type
- Portable Network Graphic
- Title
- Attribution 4.0 International (CC BY 4.0)
- Website
-
https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license
- Use constraints
- licence
- Other constraints
- This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2665 when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- Free
- Units of distribution
- kb
- Transfer size
- 750
- Distribution format
-
- OnLine resource
-
PROJECT HOME PAGE
Public information for ASAC project 2665
- OnLine resource
-
VIEW RELATED INFORMATION
Download point for the publication - AAD Staff Only
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset
Resource lineage
- Statement
- 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.
- Hierarchy level
- Dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2012-04-04 - record updated by Dave Connell after information was obtained by David Smith. 2016-05-18 - record updated by Dave Connell - basic updates.
Metadata
- Metadata identifier
- string/ASAC_2665
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 09531c34-af60-4298-b0c1-10a0f6f11e34
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-11-30T04:53:27
Identifier
- Description
- metadata.extraction_date
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 8.6
- Metadata linkage
-
http://data.aad.gov.au/metadata/records/ASAC_2665
Point of truth for the metadata record
- Date info (Creation)
- 2006-07-27T00:00:00
- Date info (Last Update)
- 2017-04-26
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
Provided by
