Related Experiment Videos
Mercury exposure aboard an ore boat
Richard R Roach1, Stephanie Busch
1Department of Internal Medicine, Kalamazoo Center for Medical Studies, 1000 Oakland Drive, Kalamazoo, MI 49008, USA. roach@kcms.msu.edu
Environmental Health Perspectives
|June 4, 2004
Summary
Maritime academy interns experienced mercury vapor exposure from a spill. Continued exposure from contaminated footwear prolonged symptoms and elevated mercury levels in one intern, highlighting the need for improved safety measures.
Area of Science:
- Occupational Health
- Environmental Toxicology
- Marine Industry Safety
Background:
- Mercury vapor exposure poses significant health risks, particularly in occupational settings.
- Maritime industry utilizes mercury in equipment like king gauges for ballast monitoring.
- Accidental spills in enclosed spaces can lead to prolonged and severe toxicant exposure.
Observation:
- Two interns were exposed to mercury vapor following a spill in a ship's storeroom.
- One intern experienced transient intoxication that resolved upon removal from the environment and decontamination.
- The other intern exhibited rising mercury levels and persistent neurological symptoms due to continued exposure from contaminated footwear.
Findings:
- Serum mercury levels in exposed interns ranged initially from 4 ng/mL to 11 ng/mL, with one reaching a peak of 188.8 ng/mL.
- Persistent exposure, particularly from contaminated footwear, exacerbated mercury toxicity and delayed symptom resolution.
- Environmental decontamination and removal of contaminated personal items were critical for recovery.
Implications:
- Contaminated footwear can act as a significant reservoir for mercury, prolonging exposure and toxicity.
- Engineering controls and safer alternatives for mercury-based equipment in the merchant marine are essential.
- Prompt and thorough decontamination protocols are crucial for mitigating mercury poisoning in occupational settings.