dr. F. (Frits) Steenhuisen

2023-2027

Occurrence of Legacy and Emerging Contaminants in Antarctic top predators
This project aims to assess the concentrations of both legacy and emerging contaminants in Antarctic phocid seals. Skin biopsy samples are collected using a crossbow and biopsy arrows. Tissue samples are analysed for as PFAS, PCBs, and mercury, as well as for stable isotopes to infer trophic level and feeding habits.

2026-

SAPPHIRE – Seasonal Arctic PFAS Pollution: Habitat Interactions & Risk Evaluation
This project studies how seasonal dynamics influence the fate of PFAS (per- and polyfluoroalkyl substances) in polar aquatic environments with a focus on ice formation.

Our research aims to assess:
- Freezing effects: Does ice formation affect PFAS in water, influencing exposure risks to biota? We’re studying this through lab and field experiments in freshwater systems.
- Seasonal bioaccumulation: How do PFAS levels in aquatic invertebrates like Daphnia and Gammarus change with the seasons? Regular sampling will reveal how life cycles and environmental shifts influence uptake.

Why it matters: The Arctic, and Svalbard in particular, is a sentinel for global environmental change. Understanding PFAS dynamics here will help us refine risk assessments and develop targeted mitigation strategies—critical for protecting fragile polar ecosystems.