Publications by authors named "I P ROSS"
Per- and polyfluoroalkyl substances (PFAS)-containing firefighting foam have been used in stationary fire suppression systems for several decades. However, there is a lack of research on how to decontaminate PFAS-contaminated infrastructure and evaluate treatment efficiency. This study assessed the removal of PFAS from stainless steel pipe surfaces using different cleaning agents (tap water, methanol, and aqueous solutions containing 10 and 20 wt % of butyl carbitol (BC)) at different temperatures (20 °C, 40 °C, and 70 °C).
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- Several products claim to effectively clean PFAS from AFFF-impacted fire suppression systems, but their long-term effectiveness is still uncertain.
- Experiments on different cleaning solutions showed that completely removing PFAS from stainless steel pipes is extremely challenging due to potential PFAS accumulation on pipe surfaces.
- Understanding the rebound behavior of PFAS and the mechanisms involved is crucial for enhancing cleaning processes and managing contaminated materials in fire suppression systems.
Background: This ORATOR sub-study evaluated swallowing physiology in patients treated with transoral robotic surgery (TORS) versus radiotherapy (RT) for early-stage oropharynx cancer.
Methods: Swallowing physiology was evaluated using videofluoroscopy and outcomes were compared across treatment arms and correlated with MDADI scores.
Results: Of the 68 patients in the ORATOR trial, 21 participated in this sub-study (30.
Article Synopsis
- Over 7 million PFAS exist, but most monitoring focuses on a few specific types, leading to incomplete understanding of their presence in environmental samples.
- Non-targeted analysis (NTA) using high-resolution mass spectrometry can identify a broad range of PFAS, revealing that many are overlooked by traditional targeted methods.
- This study found high concentrations of PFAS in UK freshwater samples and identified a new group of unsaturated perfluoroalkyl ether carboxylic acids, emphasizing the need for incorporating non-targeted methods into future monitoring and regulations.