Application of an in situ passive sampling technique for assessment of contaminants in the Antarctic environment ...

• Main Author: Larner, BL
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Antarctic; Casey Station; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.25959/23230253.v1; https://figshare.utas.edu.au/articles/thesis/Application_of_an_in_situ_passive_sampling_technique_for_assessment_of_contaminants_in_the_Antarctic_environment/23230253/1

This study investigates the use ofthe in situ passive sampling technique of diffusive gradients in thin films (DGT) to measure trace metal contaminants in overlying water and sediment porewater adjacent to a waste disposal site at the year-round Australian Antarctic research base, Casey Station. Marine sediment in a bay adjacent to the waste disposal site has been previously identified as having elevated levels oftrace metals, in particular Cd, Pb, Sn, Cu and Zn. Further development of the DGT technique was investigated with the application and testing of a new paper-based DGT sampler. These samplers were more cheaper, robust and easier to assemble than the original gel-based model, and were less affectedby pH and ionic strength. The paper-based DGT samplers had a lower than expected uptake of metals compared to the gel-based samplers in a field trial, so these samplers were not considered for Antarctic field work. Calibration of the gel-based DGT samplers using the \DGT uptake method\" at a temperature ...