Will breaking a mercury thermometer cause poisoning?

Generally speaking, whether mercury poisoning occurs after breaking a mercury thermometer depends on the specific handling measures taken. If handled promptly and correctly, the risk of poisoning can usually be effectively reduced, and poisoning is unlikely to occur. However, if not handled at all or improperly handled, poisoning may result. Detailed explanations are as follows:

If handled promptly and correctly, taking immediate and appropriate measures after breaking a thermometer-such as evacuating people promptly and avoiding staying in a mercury-contaminated environment-can help significantly. Open windows to ventilate and allow sufficient air circulation to reduce indoor mercury vapor concentration. Then use appropriate tools to collect the mercury, seal it in a container, and cover any residual mercury with sulfur powder. After proper handling like this, the risk of poisoning can generally be effectively reduced, and poisoning is unlikely to occur.

However, if no action is taken or if improper handling occurs, poisoning may result. If no measures are taken after breaking the thermometer, or if the handling method is incorrect-for example, only performing simple cleaning without collecting the mercury or ventilating-the mercury vapor may remain indoors in large quantities, leading to excessive inhalation and mercury poisoning. It is recommended to seek medical attention promptly.

In daily life, it is recommended to use thermometers correctly. If a thermometer is broken, prompt action is advised to prevent poisoning.