Lucas Morais

The influence of Water Chemistry on Zinc Bioavailability and Toxicity

This project, funded by the International Zinc Association, aims to characterize the influence of toxicity modifying factors on local freshwater species to inform future revisions of the zinc freshwater guideline values. Zinc toxicity in uncontaminated natural waters (spiked with zinc) with varying pH, hardness and DOC will be investigated, together with some limited synthetic waters supplemented with Australian and New Zealand DOCs. Local isolates of the cladoceran, Ceriodaphnia dubia, will be used, as this has been shown to be one of the most sensitive species to zinc in the current guideline value revision. MLRs and BLM modelling will be undertaken to derive bioavailability-based guidelines for Zn for Australian and NZ freshwaters.


La Trobe University


Primary Supervisor


November 2018 to November 2020