Biodegradation of the myriad of chemicals discharged to aquatic environments is largely unknown. This study aims to fill the gap in biodegradation data for subtropical aquatic ecosystems using a modified OECD 309 laboratory test. In doing so, the study identifies persistent and non-persistent chemicals and addresses questions relating to the spatial variability of biodegradation, with an emphasis on the difference between freshwater and estuarine-marine environments.

Lily Weir completed a Bachelor of Science at Griffith University in 2019. Her Honours qualification (first-class) was completed through QAEHS, and investigated PFAS leaching from natural, contaminated soils. Lily has since been working with the Department of Environment and Science where she contributes to ambient water quality monitoring programs across Queensland’s coastal catchments. Lily is now completing a PhD to improve our understanding of how contaminants persist in the natural environment (waterways) using chemical benchmarking. She values the real-life application of research principles and is devoted to filling knowledge-gaps in this space.