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Assessment of the performance of diffusive gradients in thin-films for metal contaminant measurements in Antarctic marine waters

Created 23/06/2025

Updated 23/06/2025

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This study assessed the performance of diffusive gradients in thin-films (DGT) with a binding resin that used Chelex-100 (iminodiacetic acid functional groups) to measure cadmium, copper, nickel, lead, and zinc contaminants in Antarctic marine conditions. To do this, three sets of experiments were done: (I) the uptake of metals to DGT samplers was assessed over time when deployed to three metal mixtures of known concentrations (DGT performance page). This allowed for the determination of metal diffusion coefficients in Antarctic marine conditions and demonstrated when metal competition for binding sites were likely to occur. (II) the DGT were deployed in the presence of the microalga Phaeocystis antarctica at a concentration of 1000-3000 cells/mL to investigate how environmentally realistic concentrations of an Antarctic marine microalgae affect the uptake of metals (DGT uptake with algae page). Finally, the DGT-labile concentrations from part (II) were used in reference toxicity mixture models to predict toxicity to the microalgae so they could be compared to a previous study that investigated the toxicity of metal mixtures to Phaeocystis antarctica and Cryothecomonas armigera (DGT toxicity modelling page).

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Field Value
Title Assessment of the performance of diffusive gradients in thin-films for metal contaminant measurements in Antarctic marine waters
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/3ced1598-47d7-44c2-99ce-407ebf310fce
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 15/06/2017 - 22/06/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Assessment of the performance of diffusive gradients in thin-films for metal contaminant measurements in Antarctic marine waters". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/assessment-of-the-performance-of-diffusive-gradients-in-thin-films-for-metal-contaminant-measur