The mercury thermometer is broken, how long to open the window for ventilation

Open doors and windows and ventilate for 1-2 days.

At room temperature, mercury can evaporate, and the rate of evaporation is proportional to the air temperature. According to expert tests, it is assumed that the concentration of mercury in the indoor air is detected immediately after breaking two mercury thermometers in the bedroom. Experiments have shown that the concentration of mercury in indoor air at this time is 1000 times higher than that in normal outdoor air.

If the mercury thermometer is broken, the following measures can be taken:

1. Collect mercury.

Use a damp cotton swab or tape paper to collect the mercury from the ground and put it in a plastic bottle with a small opening. During the collection process, move quickly, open the window, and try not to touch the mercury with your hands.

2. Add water.

Because mercury is particularly susceptible to evaporation, the addition of water prevents mercury from evaporating. Therefore, water can be added to the container where the mercury residue is collected and the plug can be screwed on to minimize mercury evaporation.

3. Treat mercury.

Waste mercury should never be poured into the sewer drain as it may seep into groundwater and drinking water containing heavy metals can be harmful to human health. The best course of action is to hand it over to the environmental authorities.

4. Treatment of mercury residue on the ground.

There may be some mercury residue on the ground, and the treatment method is to sprinkle some sulfur powder to neutralize the toxicity of mercury. At the same time, you can open the windows for ventilation, and you can also use other exhaust devices such as electric fans to speed up the evaporation of mercury in the air.

5. Room air treatment.

When a room is contaminated with mercury, evaporated mercury vapor will be present in the air, even if the residue is disposed of immediately. Iodine wine can be fumigated indoors, and the iodine vapor will chemically react with mercury in the air to produce non-volatile iodide mercury.

6. Accelerate indoor air circulation.

In order to make the gas evaporated by mercury flow quickly and reduce the density of heavy metals in indoor air, you can take out the electric fan used in summer to blow the air, and open the window at the same time to ventilate naturally for 1-2 days, so that the indoor and outdoor air flow accelerates. In order to make the indoor air purify quickly.

Open doors and windows and ventilate for 1-2 days.

The mercury thermometer shattered. It takes about 15 minutes to open the windows for ventilation.

Don't let him go free.

Open windows for ventilation in time.

Mercury is the only liquid metal at room temperature, once the supplies containing it are broken, the mercury will evaporate, forming a sphere to roll down, at this time, you should first turn off all the heating devices in the room, open the window for ventilation, and then wear gloves, use a small shovel to collect the mercury and bury it deeply. Mercury can evaporate into a gaseous state at room temperature, which can easily be inhaled into the respiratory tract and cause poisoning, so it is best to wear a mask when handling mercury scattered on the ground.

The mercury thermometer shattered. It takes a week to open the window.

The mercury thermometer was broken, and it took 8 hours to open the window for ventilation.

If the mercury thermometer is broken, it must be handled with caution, and the correct way to deal with it will tell you.

The mercury thermometer was broken, and it took 8 hours of ventilation to evaporate. After the thermometer is broken, the mercury inside will flow out, and the speed of mercury volatilization is related to the air temperature, the higher the temperature, the faster the evaporation, and it can be volatilized in eight hours at room temperature. After the mercury thermometer is broken, the mercury spills on the ground, be careful not to wipe it with a rag or mop, otherwise the mercury will remain on the rag or mop, and after touching other places, it may cause pollution in other places.

Mercury thermometer broken treatment method:1. Open the window for ventilation: the mercury thermometer should be opened immediately after the mercury thermometer is broken, the mercury in the mercury can evaporate at room temperature, and the ventilation of the window can effectively reduce the concentration of mercury in the air.

2. Collection: You can use tools such as cardboard shells to collect the mercury with gloves, or use tape to glue the mercury on the ground, collect it into a sealed bottle or sealed bag, and then throw the collected mercury into a hazardous trash can. At the same time, you should pay attention to wearing gloves and try not to let your hands come into contact with mercury; Also use ferric chloride solution, bleach solution or sulfur powder to clean the floor; The collected mercury is sent to the environmental protection department or chemical laboratory for safekeeping.

There are two steps to deal with the broken mercury thermometer: it is necessary to ventilate the room and take protective measures to clean up the mercury. When the mercury thermometer is broken, the indoor mercury concentration increases significantly, so the first time to open the window for ventilation, so that the mercury concentration in the air decreases, so as to avoid inhalation of excessive mercury and cause poisoning.

Wear a mask and rubber gloves, collect the mercury with a small shovel or paper towel, do not touch the mercury directly with your hands, put it in an airtight container or bag, seal it and bury it in the soil.

Precautions for broken thermometers

1. When the thermometer is damaged, the personnel in the area where the thermometer is damaged, especially children, should be evacuated first. At this point, the children should be quickly removed from the place where the accident occurred.

2. Turn off the indoor heating equipment, because mercury will evaporate quickly at high temperatures. In order to facilitate our cleaning, we should do our best to avoid evaporation indoors and turn off air conditioners, electric heaters, etc.

3. Immediately open doors and windows for ventilation to speed up indoor air flow and avoid excessive indoor mercury concentration.

4. Do a good job of self-protection, wear masks and gloves, and take off watches, rings and other metal jewelry.

5. To find the mercury beads scattered on the ground, if it is difficult to find with the naked eye, we can use a strong flashlight to find it.

6. We can collect the dispersed mercury and put it in a sealed bottle.

7. On the ground treated with sulfur powder, we can sprinkle some sulfur powder on the ground to avoid some residual mercury that we can't find, it can react with sulfur powder to form mercuric sulfide solid, and then put it into a closed container.

8. When dealing with closed containers, the closed containers containing mercury can not be thrown away, nor can the mercury be poured into the sewer or garbage can, otherwise it is easy to cause secondary pollution, and a small amount of water should be added to the container in the closed container, marked with signs such as waste mercury, and then handed over to the community waste management department, or waiting for the environmental protection department to deal with.

After the thermometer is broken, the room can be ventilated for 24 hours with the windows open.

When a mercury thermometer is broken, it can cause the mercury to scatter, and if the mercury is not collected in time for professional treatment, it may cause the mercury to volatilize and enter the air. If a certain amount of mercury vapor is inhaled, it can cause mercury poisoning.

The amount of mercury in the mercury thermometer is relatively small, and the mercury vapor has been diluted or even completely disappeared after 24 hours of ventilation after opening the window in time, so the indoor is relatively safe and can continue to live.

What to do after the thermometer is broken:

1. Leave the elderly and children from the scene: When the thermometer at home is broken, the first thing to do is to quickly remove the elderly and children from the area where the thermometer is broken, so as to prevent children from eating by mistake and avoid contact with the elderly.

2. Thoroughly clean up mercury hail: Because mercury is very volatile, so to avoid the temperature in the house is too high, we need to turn off the air conditioning and electric heater in the house before we clean the reed, and at the same time we should immediately open the doors and windows for ventilation to reduce the concentration of mercury in the house.

Mercury thermometer broken to ventilate for 4-5 hours.

Usually the thermometer is broken indoors, so for the next 1 to 2 weeks, try to keep the room ventilated to reduce the concentration of mercury vapor in the indoor air. When a mercury thermometer is broken, it should be disposed of properly to prevent mercury vapor from entering the body through the respiratory tract. Here's how:

Lay a piece of cardboard flat on the floor and use a small brush to gently sweep the mercury spilled on the ground onto the paper.

Then put it in a bottle with water, seal the bottle and label it, and hand it over to professionals or relevant departments for disposal, such as waste liquid management personnel of community neighborhood committees, environmental protection departments, etc.

Precautions for using mercury thermometers

When measuring body temperature, the commonly used mercury thermometer should pay attention to keeping the mercury column below 35, avoiding activities that change body temperature, measuring time, measurement method, etc.

Try to choose a mercury thermometer and keep the mercury column below 35. Don't eat foods that are too hot or too low, such as boiled water and ice cream, before your temperature is taken, and avoid sports that raise your body temperature. If you notice sweat in your armpits before measurement, dry them before taking your temperature.

Pay attention to keep the time in mind before measuring, the time is not less than 5 minutes, and the general measurement time is 5 10 minutes. If the thermometer suddenly slips or loosens, take a new measurement.

The above content refers to People's Daily Online - Breaking a mercury thermometer, can it really poison people?

5 hours.

There are no strict requirements, and it is generally recommended that ventilation for 5 hours is better. Usually, when the thermometer is broken, all the windows in the house are opened and all the mercury is collected, such as shoveling up pieces of paper and putting them in a box and moving them outside. Because mercury has a certain volatility, the human body also has self-defense function.

Open windows and doors in time, keep the room ventilated, it is usually recommended to ventilate for 5 hours, after the mercury thermometer is broken, at least ventilate for more than half an hour, and it is safer to wear a mask and gloves, use a small piece of paper to collect the mercury, put it in a sealed container, and discard it in a place dedicated to handling harmful substances.

Mercury thermometer precautions:

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

2. It is not allowed to use the measured value with a temperature exceeding the maximum scale value of the thermometer.

3. The thermometer has thermal inertia, and it should be read after the thermometer reaches a stable state. Readings should be taken in the tangent direction of the most orange of the meniscus surface of the temperature convex meniscus, with a direct gaze.

4. The mercury thermometer should be perpendicular to the flow direction of the measured working fluid or inclined.

5. The mercury thermometer often breaks the mercury column, and the elimination methods are: cold repair method: insert the thermometer temperature measuring package into the dry ice and alcohol mixture (the temperature shall not exceed -38) for cold contraction, so that all the mercury in the capillary shrinks to the temperature measuring bag.

Thermal repair method: slowly insert the thermometer into a thermostatic bath with a temperature slightly higher than the upper limit of the measurement, connect the broken part of the mercury with the entire mercury column, and then slowly take out the thermometer and gradually cool it to room temperature in the air.

The above content reference: Encyclopedia - Mercury Thermometer.