You may not fully grasp how dangerous a broken mercury thermometer can be. We've all used thermometers, and some children even play with them. But did you know that if you accidentally break a mercury thermometer, it's no laughing matter—it's genuinely hazardous? Let's explore just how dangerous a broken mercury thermometer can be.
Many households with children keep thermometers, commonly mercury ones. If accidentally broken, you'll find mercury spilling out—extremely difficult to clean up. While most know mercury is toxic, few understand its true hazards, its impact on health, or proper cleanup procedures.
Incident: Family of Three Suffers Mercury Poisoning After Thermometer Breakage
According to the report, Ms. Wang from Hankou accidentally flung the mercury thermometer while taking her daughter's temperature, shattering it and scattering silver-white mercury droplets across the floor.Ms. Wang mopped the floor with a mop, but some mercury droplets slipped under the bed. Rushing her daughter to the hospital, she abandoned further cleanup. That evening, Ms. Wang, her husband, and daughter began experiencing headaches and stomachaches, but the cause remained unclear.The next day, Ms. Wang mentioned the broken thermometer to a friend studying medicine. The friend warned that mercury evaporates and suggested the headaches might be linked to residual mercury. After undergoing urine mercury tests at Wuhan Occupational Disease Prevention Hospital, all three family members were found to have mercury levels several times above the standard. The headaches and stomach pains were early symptoms of mercury poisoning, requiring detoxification treatment for all three.
Hazards: Mercury seeps into every crevice
What exactly is mercury, and why is it so dangerous? Our reporter interviewed Liu Guijun, a chemistry teacher at a local middle school. When a mercury thermometer breaks, this silvery-white liquid metal—commonly called "quicksilver"—scatters like tiny droplets across the floor. At room temperature, it evaporates rapidly.Some forms clumps that can be cleaned up with cardboard or similar materials, but a small portion seeps into floor cracks and carpets. Sleeping with windows closed at night increases the risk of poisoning.
After reviewing extensive data, the reporter discovered that mercury evaporates faster at higher temperatures.
Experts have tested that a standard mercury thermometer contains 1 gram of mercury.If all this mercury evaporates, it can raise the mercury concentration in a sealed 15-square-meter room with a 3-meter ceiling to 22.2 milligrams per cubic meter. For an average person, exposure to a room with mercury levels between 1-3 milligrams per cubic meter for just two hours can cause headaches, fever, abdominal cramps, and breathing difficulties.
Professor Liu Xianhua, Chief Physician of Neurosurgery at the Municipal Workers' Hospital, explained that mercury hazards typically manifest in three ways: inhalation of mercury vapor into the lungs, mercury liquid entering the bloodstream or wounds, and accidental ingestion of mercury-containing food or materials. If mercury vapor is inhaled, one should immediately evacuate to fresh air, administer artificial respiration if necessary, and seek medical attention promptly.For skin contact, immediately remove contaminated clothing and thoroughly rinse with running water. Those who ingest mercury should rinse their mouths, drink milk or egg whites, and seek medical attention promptly, Professor Liu advised.
Disposal: Absorb spilled mercury promptly using adhesive tape or cotton swabs, then seal in a bottle. Regarding spilled mercury, Teacher Liu Guijun advised using moistened cotton swabs or adhesive tape to collect droplets from surfaces. Place the collected mercury into a sealable small bottle, adding a small amount of water to prevent evaporation.Work swiftly during collection, open windows for ventilation, and wear gloves to avoid direct contact. Mr. Liu also cautioned that collected mercury must never be poured down drains. If mercury seeps into groundwater, consuming water contaminated with heavy metals can harm human health. For mercury that cannot be fully collected, sprinkle sulfur powder to reduce toxicity while maintaining prolonged ventilation.
The above details the dangers posed by broken mercury thermometers. We hope this information raises your awareness about these everyday hazards, enabling you to stay vigilant and maintain a healthy environment. Wishing you a pleasant life.