Netizen system tear gas bomb map all the districts of the index of a key to see a mask is also useless?

Practical teaching

Written by: Li Jialiang

2019-11-20 18:24

The revision of the Fugitive Offenders Regulation continued, and the police fired tens of thousands of tear gas bombs during the demonstrations, and almost all areas were not spared. Some netizens used the Google Maps to create the "HK Tear Gas Map" to remind the public to avoid going to the relevant places in the short term to ensure health.

In the demonstrations in recent months, the Hong Kong police used tear gas to disperse the masses, narrow streets and even residential hospitals, all of which were affected by the smoke generated by tear gas. However, the Government and the Police have been refusing to disclose the contents of the tear gas bombs on the grounds of "involving the deployment of the action". Many people are worried about whether the composition of the tear gas is harmful to the human body, such as the release of dioxins which are difficult to eliminate.

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Some netizens used Google Maps to create a "Hong Kong Teardrop Map". The place where the police had fired tear gas can be marked. The detailed usage is as follows: (Click on the thumbnail to enlarge)

According to the map, there are at least 500 locations in the "Zhong Zhao", you can see what is included, if not necessary, try to avoid going.

"Hong Kong Tear Gas Map"

(Google Maps)

The tear gas will release dioxin?

Chen Yujie, a lecturer in the Department of Chemistry at the University of Science and Technology, who is known as Dr. Fire, said earlier that the CS tear gas in the tear gas composition contains chlorine and a benzene ring, which is completely in line with the structure that produces dioxin. The burning of the ground can release dioxin.

In response, the Senior Superintendent of the Police Operations Division, Wang Weixen, acknowledged that the tear gas may release dioxin. However, the source of dioxin release includes burning plastics. The most plastics are "thugs", describing them as "black hands destroying the earth". .

The Director of Food and Health, Chen Yushi, said that no literature or research has shown that the use of tear gas caused dioxin poisoning cases, and the tear gas bombs burned for a short time, and the cyanide produced (commonly known as Shane) quickly dissipated in the air.

What is the problem with excessive intake of dioxins?

Humans, such as a large intake of dioxins, can cause skin diseases such as acne sores, skin rashes and discoloration, and excessive body hair. Long-term intake of dioxins involves immune system, reproductive function, endocrine system and developmental nervous system damage. Some studies have also found that dioxins are associated with diabetes, thyroid dysfunction and heart disease.

Mask is useless?

In the face of dioxin, in fact, the general mask is not very effective, some doctors suggest that you can wear activated carbon masks.

(data picture)

However, the best prevention method is to stay away from areas contaminated with dioxin.

Treat contaminated food points?

Mr Chan said that to reduce the risk of food contamination, food should be properly stored in suitable places, such as clean and covered food containers. Under normal circumstances, washing food, such as fruits or vegetables, with running water can reduce food. Surface contaminants.

However, Chen Yu began to add that if food is suspected to be contaminated or otherwise abnormal, "for prudence, it should not be eaten."

Other considerations

According to the Department of Health, symptoms may occur after exposure to tear gas, including tingling and burning sensation in the eyes and other mucous membranes, drooling, drooling, runny nose, chest tightness, headache, nausea, burning sensation of the skin and erythema. These symptoms usually disappear within a short time after contact, but it is recommended to clean the skin, wash your eyes, and replace the contaminated clothing if you are exposed to tear gas; if you are in an indoor place and there is tear gas in the vicinity, all doors and windows should be closed. Turn off the air conditioner and seal the door and window with a damp cloth.

In addition, breastfeeding should be avoided for one to two hours after exposure to tear gas. Before contact with infants or breastfeeding, breastfeeding mothers should change their clothes and thoroughly cleanse the hair and skin to prevent the baby from being exposed to tear gas residue.

After the police transferred to the Chinese-made tear gas, the EPA finally announced the October 2 dioxin data.

[Fugitive Offenders Ordinance] Chen Yushi: Medical literature shows no cases of dioxin poisoning caused by tear gas

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[Police Reporter] The police said that the source of dioxin is burnt rubber police tear gas to prevent non-manufacturing pollution

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