Eat the hot pot commonly used in hot pot, whether the radiation exceeds the standard, is it harmful to the human body? Last Monday, media reports once again caused the induction cooker to be controversial. The report pointed out that the World Health Organization believes that electromagnetic pollution can affect the nervous system, reproductive system, and even cancer. It is said that the induction cooker for hot pot is opened to the maximum, and the radiation value increases to 102.1% when it is 10 cm from the front. Therefore, the reminder message that "the induction cooker radiation may cause cancer" was instantly transmitted on the Internet.

On March 31, the civil environmental protection organization Darwin asked the environmental research institute to test the radiation of two different power induction cookers. The data showed that they did not exceed the standard and were far below the national limit. At the same time, the experimenter also tested the microwave oven and hair dryer that the public believed to have strong radiation. In addition to finding that the microwave oven was extremely close to the right side (2 cm from the right side casing), the magnetic induction intensity exceeded the standard instantaneously, and other data were in the safe range. Inside.

The relevant person in charge of the Darwin Environmental Research Institute said that as long as it is a regular qualified home appliance, the electromagnetic induction is within the normal range, so don't worry.

Experimental time: March 31st afternoon

Experimental site: In a volunteer home near Jianxiang Bridge outside North Fourth Ring Road, the electromagnetic field background value of the room is 0.013μT.

Testing organization: Dahl Environmental Research Institute

Experimental equipment: HI-3604 power frequency electromagnetic field strength tester

(This experiment is only responsible for the experimental samples.)

Experiment 1 Induction Cooker

Arbitrary azimuth radiation value is not exceeded

Experimental sample: Two different brands of induction cookers, one with a maximum power of 2100W and the other with a 1900W.

Experimental process: Place a pot of water on the induction cooker and heat it with maximum power. The experimenter uses the instrument to test the highest value of radiation at different distances around the induction cooker.

Interpretation of the experiment: According to the results of the test, the results of the test results show that the magnetic induction values ​​of the two induction cookers are not exceeding the standard when the front is close to the induction cooker 10 cm, but the back of the induction cooker is slightly higher than the magnetic induction values ​​on the front and sides. The farther the distance is, the smaller the magnetic induction is, and the distance is 30cm to 40cm, which is already very low.

Of course, all the data are far below the national standard limit of 100μT. Even if the pot that removes the boiling water is directly “naked” directly above the induction cooker, it is not exceeded.

In addition, from this test, the electromagnetic radiation size of the induction cooker is not necessarily proportional to the power level.

Experiment 2 microwave oven

High magnetic induction value at the control panel

Experimental sample: A commonly used G brand microwave oven with microwave input power of 1180W and output power of 700W.

The experiment process: put a cup of water in the microwave oven, microwave heating, respectively test the highest value of the magnetic induction on the four sides and above the microwave oven.

Experimental interpretation: The magnetic induction values ​​on the four sides and above the microwave oven are within the limits. However, the right side of the microwave oven is significantly higher than the magnetic induction values ​​at other locations, especially when it is close to the right side of the housing 2cm, the value reaches 115, exceeding the standard.

According to the experimenter, this may be because the computer control panels and components of such microwave ovens are concentrated on the right side. However, this is actually a theoretical value, and it is unlikely that a distance of 2 cm will occur in actual life operations. When the distance is 10cm from the right side, the electromagnetic induction value is normal, so when heating, do not be too close to the right side of the microwave oven.

Experiment 3 hair dryer

Air outlet magnetic induction value is lower than the side

Experimental samples: two household hair dryers, one for three windshields and one for two gears.

Experimental procedure: When the hair dryer is used, it is generally about 5 to 10 cm away from the human body. The experimenter simulates these two distances and selects the air outlet and side of the hair dryer to test.

Interpretation of the experiment: Dahl asked the staff to introduce the data, the data shows that the high-speed wind speed of the hair dryer is slightly higher than the low-speed wind speed, but the overall data is lower than the standard limit.

â–  Interpretation

"Electromagnetic pollution harms the human body" has no conclusion

For the radiation hazard of the induction cooker, the fruit shell network said in the rumors that with the current information of the World Health Organization, it can not be said that "electromagnetic pollution will affect the nervous system, reproductive system and even cancer."

The Science Squirrel Club member and communication professional teacher "Occam Razor" also said on Weibo that "WHO has never been identified as such (electromagnetic radiation is carcinogenic)."

The World Health Organization's official website article on electromagnetic field risks shows that "so far, scientific evidence does not support any association between these symptoms and exposure to electromagnetic fields."

The impact on pregnancy, the World Health Organization official website also said that under the normal electromagnetic field strength, it will not increase the risk of spontaneous abortion, fetal malformation, low birth weight, congenital diseases.

According to the relevant person in charge of the Environmental Research Institute, the World Health Organization classified the “electromagnetic field risk” brought by household appliances as a category 2B weak risk, “the same level of risk as drinking coffee and eating pickles”.

The power frequency magnetic induction limit recommended by the World Health Organization is 200μT, while the recommended limit in China is 100μT, which is “more stringent”. Therefore, as long as the magnetic induction value is within the limits, the harm to the human body can be neglected.

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