Why is it dangerous for a mercury thermometer to break? How toxic is mercury?

Mercury is poisonous, and when the mercury thermometer is broken, it is particularly easy to cause poisoning and death, so it is particularly dangerous. Mercury is very toxic. A small amount of mercury can cause a person's death.

Because mercury can harm a person's health. The toxicity is very strong, and there is no way to alleviate it after people are poisoned.

Because the mercury in the thermometer is a very dangerous chemical, it is very dangerous for the mercury thermometer to break, and I think the mercury is very toxic.

Because mercury is highly toxic and volatilized through the air, it can also poison people, and if it is taken orally, inhaled or touched, it can cause damage to the brain and liver.

It is because there are a lot of toxins in it, and because of the mercury content, the toxicity is particularly strong, and people will be poisoned immediately after being contaminated.

1.Problem description.

Mercury thermometers are commonly used in everyday life to measure temperature. But once the mercury thermometer is broken, will it cause poison to the human body?

2.Properties of mercury.

Mercury is a toxic metallic element, a liquid metal at room temperature, it is very fluid, volatile, so it is easy to ingest. In fact, inhalation of mercury vapor can easily cause symptoms of poisoning. In daily life, if the mercury thermometer is accidentally broken, some of the mercury will be scattered on the ground or other surfaces, and if it is not cleaned up in time, it will cause harm to people.

3.Hazard analysis.

The hazards of mercury have the following effects on human health:

1) effects on liver function;

2) effects on the respiratory system;

3) obstruction of the normal functioning of the central nervous system;

4) Effects on the cardiovascular system.

4.How to clean up safely.

1) First of all, the thermometer should be immediately checked for cracks to see if there is any mercury scattering.

2) If you find that the mercury is scattered, you should turn off the indoor air conditioner and humidifier as soon as possible to prevent the mercury from evaporating.

3) During the cleaning process, tools such as vacuum cleaners, brooms, etc. should not be used for cleaning, as these tools may diffuse mercury vapor. A sticky material, such as adhesive tape, should be applied directly to the mercury scattering area to absorb the water and hold the silver.

4) In cleaning, you can open the indoor windows to enhance ventilation, or you can use detergent for cleaning, but be careful not to react with mercury.

5) If there is serious pollution, it is best to ask a professional cleaning company to deal with it.

5.Precautionary measures.

The following precautions should be taken in the daily use of mercury thermometers:

1) Avoid using second-hand thermometers and make sure that the thermometer you use is in normal condition.

2) Be careful when using to avoid impact or fall.

3) Place in a safe location out of reach of children or others.

4) When the thermometer is damaged, it should be cleaned immediately.

6.Summary.

Broken mercury thermometers can be toxic to the human body, so care must be taken when using and cleaning them. If it is not broken carefully, it should be cleaned up in time to prevent mercury evaporation from causing harm to the human body. At the same time, it is also necessary to pay attention to preventive measures in daily life to avoid damage caused by mercury.

OK.

It can be neutralized with sulfur. The amount of mercury (mercury) contained in the thermometer is very small, and I think it is less than 5 grams if I were to estimate it accurately. About 1 4 ml.

Such a small amount of mercury is cumbersome to dispose of, and the average household rarely prepares anything like sulfur. There is an easy way to use the inner wrapper of a cigarette to put mercury"Dip"Get up.

Tin can be combined with mercury to form tin amalgamation at room temperature) This treatment ensures that mercury does not volatile.

Mercury thermometer

Spilled mercury must be collected immediately with a dropper, brush, covered with water (preferably glycerin), and then sprinkled with sulfur powder on the contaminated area and cleaned up after there is no liquid (usually about a week).

1. Calibration should be carried out before use (the standard liquid temperature multi-piece comparison method can be used for calibration or the calibration of a thermometer with higher accuracy).

2 Measured values with a temperature exceeding the maximum scale value of this type of thermometer are not permitted.

3 The thermometer has thermal inertia and should be read after the thermometer reaches a steady state. Readings should be taken in the highest tangent of the temperature convex meniscus with a direct gaze.

The above content refers to Encyclopedia - Thermometer.

Don't use a broom to clean the mercury thermometer when it is broken, but cover your mouth and nose before opening the window. Ventilating the room and turning off all heating appliances in your home, such as heating and air conditioning, can greatly reduce the rate at which mercury evaporates.

Mercury is the chemical element mercury, which is the only liquid metal that can exist at room temperature. Its chemical properties are unstable and easily change with temperature. The most important thing to pay attention to is that people should not come into direct contact with mercury, because mercury and mercury vapor are highly toxic, and if accidentally broken, they should be disposed of in time and correctly.

Do a good job of self-protection before collecting scattered mercury beads, and wear masks and gloves. You can use some cardboard or wet cotton swabs to clean up, if the glass slag on the floor is too broken, you can use a wide tape to stick it, and discard the cleaned mercury sealed package.

Hazards of mercury

The mercury in the mercury thermometer is mercury because it has a relatively small heat capacity and is sensitive to temperature changes. And it is not corrosive to glass containers, so it will appear in our commonly used thermometers. Medical studies have shown that if inhaled mercury vapor exceeds 1 mg per cubic meter within 3-5 hours, it is likely to cause acute mercury poisoning.

Medical studies have shown that if all the mercury in the mercury thermometer is broken, the mercury concentration in the air can reach 45 cubic meters of mercury per cubic meter. Of course, this is just extreme speculation. If all the mercury is volatilized into the air, this situation does not meet the criteria for poisoning, even if the ventilation of the space is not considered.

It can also cause poisoning after entering the body, especially if there are pregnant women or children in the family, so be aware of this.

1. Handlers should wear hats, masks and gloves; If the mercury droplets are large, you can roll them into a tube with slightly stiff paper, or collect them with tin foil, tape paper, and moistened cotton swabs, and pack the mercury droplets in a sealed bottle; It is worth noting that mercury is insoluble in water, so the water seal cannot effectively prevent its volatilization, and the liquid level can be covered with glycerin or 5% sodium sulfide solution to prevent the evaporation of mercury vapor.

2. When the mercury drips in the gap or is very fine, an appropriate amount of sulfur powder can be taken to cover it, so that it can produce a chemical reaction to form sulfide mercury, and clean it after 3-4 hours, the sulfide mercury is solid and cannot evaporate, so it reduces the harm to the human body; Or spray with 20% ferric chloride (10% bleach solution), at this time the mercury flowing out forms an alloy of non-toxic mercury and iron, which is placed for 1 hour and then cleaned.

3. Clean up polluted garbage, including broken glass, in a closed container and keep it properly.

4. Rinse the ground contaminated by mercury with 5%-10% ferric chloride or 10% bleach solution.

5. If mercury droplets are scattered on the bedding and clothes, the mercury droplets should be found as soon as possible and disposed of according to the above methods, and the contaminated bedding and clothes should be fully exposed to the sun; If you accidentally come into contact with mercury, you can rinse it with water immediately.

6. The ceiling, walls, and air of the polluted room are fumigated with heated iodine (grams per square meter or 1 gram per cubic meter), or dispersed on the ground with grams of iodine per cubic meter for 8-12 hours, and the doors and windows are closed at the same time, and the indoor personnel withdraw.

7. After the treatment, it should be ventilated before entering to reduce the inhalation of residual mercury vapor by the human body. For **, the mercury shall be provided to the unit with disposal capacity for disposal.

No, when the head of the mercury thermometer (or thermometer) is damaged, the mercury inside will spill, but the mercury will volatilize when the temperature is high, so you don't have to worry about opening the window for ventilation. Mercury is toxic, and after leakage, try to avoid contact with it, reduce the inhalation of steam, and never enter it.

Mercury is the only metal that is liquid at room temperature, and when the products containing it are broken, the mercury evaporates. Moreover, it has particularly good adsorption. Mercury vapor is easily adsorbed by walls and clothing, and becomes a source of continuous air pollution.

Although it will not cause much harm to the body if inhaled in small amounts, it can cause mercury poisoning if inhaled in large amounts for a long time.