Firefighter gear, a crucial component of personal protective equipment (PPE), has long been associated with the use of per- and polyfluoroalkyl substances (PFAS), also known as "forever chemicals" due to their persistent nature in the environment. These substances, once thought to be a boon for repelling liquids, have now become a subject of intense scrutiny due to their potential health risks. The National Institute of Standards and Technology (NIST) has been at the forefront of this research, systematically measuring PFAS concentrations in firefighter equipment since 2021. Their latest report, published in May 2026, delves into the impact of wear and tear on PFAS levels in firefighter gear, particularly focusing on hoods, gloves, and wildland gear.
The PFAS Dilemma
PFAS, with their excellent liquid-repelling properties, have found their way into various products, from nonstick pans to raincoats. However, the very same properties that make them useful have also raised concerns. High concentrations of PFAS have been linked to cancer, and studies suggest that firefighters, who are regularly exposed to these chemicals, have higher rates of cancer than the general population. This has prompted Congress to call for NIST's involvement in measuring PFAS in firefighter gear, a crucial step towards understanding and addressing the problem.
The NIST Study
The NIST study, led by Rick Davis, examined the impact of routine wear and tear on PFAS levels in firefighter gear. The materials underwent three different tests based on the stresses they're likely to undergo in the field: abrasion, heat, and weathering. Hoods and wildland gear were systematically abraded to simulate general damage, while gloves were not tested for abrasion due to their thick outer layers. Heat treatment was applied to simulate the temperatures a firefighter might encounter inside a burning building, and long-term outdoor weathering was simulated for wildland gear.
Results and Implications
The results of the study were mixed. PFAS concentrations measured in firefighter gloves increased after heat treatment, while those in hoods increased after both abrasion and heat treatment. Interestingly, PFAS measured in wildland gear decreased after abrasion and weathering. These changes may have occurred due to the release of more PFAS from the fabric or the chemical alteration of PFAS into different types. The study only measured 56 out of thousands of known PFAS due to their relevance to potential health concerns.
The Way Forward
The NIST study provides a baseline for PFAS levels in firefighter gear and a standardized way to measure these chemicals over time. As PFAS awareness grows, changes are already beginning to take shape in the industry. Several firefighter equipment manufacturers have started selling PFAS-free equipment, and accurate and reliable measurements will continue to be important as the industry evolves. The work NIST has done could help set a baseline for how these new products can be measured and compared under various conditions.
Personal Perspective
As an expert in this field, I find the NIST study fascinating for several reasons. Firstly, it highlights the importance of understanding the impact of wear and tear on chemical concentrations in PPE. Secondly, it underscores the need for standardized measurement methods, which can help in assessing health risks and making informed decisions. Lastly, it serves as a reminder that even well-intentioned innovations can have unintended consequences, and it's crucial to continually evaluate and mitigate these risks.
In conclusion, the NIST study provides valuable insights into the impact of wear and tear on PFAS levels in firefighter gear. As the industry moves towards PFAS-free alternatives, accurate measurements will continue to play a pivotal role in ensuring the safety and well-being of firefighters. The study also raises important questions about the long-term effects of PFAS exposure and the need for further research in this area.
