Save health vulnerabilities Khan swimming pool, mixed with disinfectant urine can cause cancer

News: last week, Nanjing Jiangning district and Sichuan Guangyuan city has experienced swimming pool chlorine spill, there are many physical discomfort was sent to the hospital for treatment.

What? see expert comment!

Swimming pool in general are "chlorine" do disinfectant, swim in the swimming pool, the residual chlorine does harm to the human body become very concerned about.

While the United States conducted a new study shows, the organic matter in the swimming pool and swimming pool disinfectant in mixed together produce compounds trichloromethane, carcinogenic risk. This study found published in the environmental science and technology magazine.

Of course, we cannot deny the way not to go swimming, but how scientific prevention?

Interviews with experts: Nanjing Chemical 66 senior teacher Li Yan

Sodium hypochlorite can damage cell membranes

July 26, 14: 45 or so, Nanjing Jiangning miracle fitness swimming pool, accompanied by a sharp smell, some swimmers have appeared physical discomfort.

Subsequently, about 60 people were taken to hospital for examination and treatment, of which half are children.

26, 22, Sichuan Guangyuan city Xifeng road, a swimming pool, the chlorine gas leak accident occurs on-the-spot emergency evacuated thousands of people, there are many people with varying degrees of toxicity symptoms.

A day in both cases, and disinfectants.

Our large swimming pool generally use the "chlorine" and small swimming pool generally used bleaching powder (main ingredient is calcium hypochlorite) on the swimming pool water disinfection and sterilization.

"Chlorine" why can achieve sterilization? how much content will hurt?

Introduction to lie groups-teacher: generate chlorine soluble in water, "after" sodium hypochlorite and hydrochloric acid, chlorine bactericidal effect, mainly "sodium hypochlorite".

Because the "sodium hypochlorite" small volume, not charged, easily through the cell wall; more importantly, it is a strong oxidizing agent that can damage cell membranes to make proteins, RNA and DNA, release, and to influence and interference with various enzyme system, make the sugar metabolism, resulting in the death of bacteria; the role of chlorine dioxide on virus lies on the DNA of lethal damage.

Of damage to the human body, and for this reason: invasion of the body through the respiratory tract of chlorine, dissolved in the mucosa of the moisture, electrogenerated and hydrochloric acid.

"Sodium hypochlorite" allows tissue cells affected by the strong oxidation; hydrochloric acid stimulation occurs inflammatory swelling of the mucous membrane of the respiratory mucosal edema, large amounts of mucus, causing breathing difficulty, so obvious symptoms of chlorine gas poisoning is occurring severe cough. Symptoms of serious pulmonary edema occurs, leading to heart and lung failure and death.

26, Jiangning a swimming "a pungent smell, a mother feels the throat hard, her 3-year-old baby start coughing, small face flamed, embraced a swimming pool, baby spits up a cold hands and feet, then.

"Baby why would spit? because chlorine enter the body by the esophagus," the nausea, vomiting, chest pain and diarrhea ".

Per liter of air up to allow chlorine 0.001mg, more than the quantity you will cause human poisoning responses.

Both cases are caused by chlorine gas leak.

Children are the most vulnerable to the chlorine damage

There is no chlorine gas leak, but swimming in often smell the pungent smell of bleaching powder, so safe?

Introduction to lie groups-teacher: chlorine and water is a reversible hydrolysis reactions.

Chlorine dissolved in water to produce sodium hypochlorite and sodium hypochlorite and hydrochloric acid; but, will the hydrochloric acid generation chlorine and water, chlorine gas will gather on the water.

If everything goes according to requirement, the water content of chlorine per litre is not more than 0.2 mg; swimming pools water pH 6.5-8.5 (developed 7.2-7.5), an overflow of chlorine in the water would not be exceeded, persons relatively safe.

However, there's a swimming pool, do not change water regularly in order to increase investment amount of disinfectant to keep the water clean; or the operation of the extensive, not complying with the standard control disinfectant usage, etc., resulting in a water content exceeding in sodium hypochlorite.

In this way, the reverse reaction, water releases of chlorine gas will increase.

Children is short, away from the water near the inhalation of relatively more chlorine; children delicate tissues and organs, a weaker immune protection mechanisms, and therefore the brunt of hurt.

Summer, many allergies had already disappeared children, rhinitis, asthma and allergic diseases, papular urticaria have a history of recurrent, questioning, the discovery of these children have to have water in the swimming pool play ("sodium hypochlorite", be characterized as a "common allergens").

Many people think that to go swimming in the morning, the water clean.

But especially remind: swimming pool, just opening up and disinfectant to 2 hours, while a higher temperature, environment without wind, such circumstances most prone to the chlorine poisoning responses.

Therefore, experts advise people to choose the swimming pool water quality compliance.

Also highlights smell the scent of swimming pool water, if it has gone the nose bleaching powder flavour, it is best not to go.