PhD research: Revealing the hidden identity and toxicity of priority chemical pollutants released during microplastic degradation and additive leaching in marine and coastal environments
My research has two main aims:
1. To identify chemicals present in microplastics which then leach into the marine environment
2. To determine the toxicity and effects of those chemicals on marine organisms
Micro- and nanoscale plastics are produced from the decomposition of marine plastic debris and pose a severe threat to marine and coastal ecosystems. Microplastics undergo degradation in the marine environment through various mechanisms which results in the release, or leaching, of chemical additives. These additives are introduced during production of the initial plastic product to achieve desirable qualities – for example to reduce corrosion or add colour. My research hopes to determine the identity and fate of chemical additives released into the marine environment, particularly those which do not degrade and pose a toxic threat to marine ecosystems. This work has implications for future marine surveillance and compliance monitoring of coastal waters.