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Updated: May 13, 2026
09:33
An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Mercury toxicity in wildland firefighters
William R Smith1, George Montopoli, Andy Byerly
1Division of Emergency Medicine, University of Washington School of Medicine, Seattle, WA, USA. willmd911@mac.com
Wilderness & Environmental Medicine
|March 5, 2013
Summary
This study found no significant mercury level increases in wildland firefighters despite exposure to wildfire smoke. Continued research is recommended to ensure firefighter health and safety during fire seasons.
Area of Science:
- Environmental Health
- Occupational Health
- Toxicology
Background:
- Wildland fires release significant atmospheric mercury.
- Mercury toxicity is observed in western US eagle populations near fire areas.
- Wildland firefighters may be exposed to mercury through smoke and contaminants.
Purpose of the Study:
- To investigate if wildland firefighters exposed to wildfire smoke have elevated blood mercury levels.
- To assess mercury exposure risks for wildland firefighting crews.
Main Methods:
- A cohort of wildland firefighters in the western US was studied over three summers (2007-2009).
- Pre- and post-fire season blood samples were collected and tested for mercury levels.
- A control group was included in 2008 and 2009 for comparison.
Main Results:
- Detectable blood mercury levels were found in 6 firefighters, with one elevated level over the study period.
- Six control subjects had detectable mercury levels, and none were elevated.
- No statistically significant increase in blood mercury levels was observed in the firefighter cohort.
Conclusions:
- The study did not demonstrate statistically significant elevated blood mercury levels in wildland firefighters.
- Ongoing investigation is advised due to the persistent risk of mercury exposure from wildfires.
- Ensuring the health and safety of firefighting crews remains a priority.
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