The swimming pool stores the hidden danger of the health It is very carcinogenic that the sweat urine are mixed with disinfectant

The swimming pool stores the hidden danger of the health It is very carcinogenic that the sweat, urine are mixed with disinfectant
The swimming pool stores the hidden danger of the health It is very carcinogenic that the sweat, urine are mixed with disinfectant
Last week, Nanjing river would rather district and the intersection of Sichuan and the intersection of Guangyuan and city the chlorine leakage accident of swimming pool took place, uncomfortable quilts of many people are sent to hospital and treated. Usually use in the natatorium " Chlorine " Make disinfectant, so swim in the swimming pool, residual chlorine injures and becomes the problem that people care about to the human body very much. And a latest research which U.S.A. carries on reveals, the organic matter in the swimming pool mixes compound chloroform produced with disinfectant in the swimming pool together, there are carcinogenic dangers. It is published on magazine of " environmental science and technology " that this discovers. Certainly, we can go swimming put off easily by a slight riskly, but how does science take precautions against? Interview experts: The chemical senior teacher in Nanjing 66 Li QunYan Times of chloric acid can damage will it be 45 about past 14 July 26 such as cell membrane, Nanjing river would rather the intersection of district and miracle build up body in the natatorium, accompanied by the pungent smell for a moment, it is uncomfortable that some swimmers appear in succession. Subsequently, about 60 people are sent the hospital to check and treat, among them over half is the child. At 22 on the 26th, Guangyuan urban area of Sichuan perches the chlorine leakage accident happens in a swimming place on the way of phoenix, thousands of on-the-spot masses are evacuated urgently, many people present poisoning symptom at various degrees. These two incidents happening in one day, are all involved in disinfectant. Generally use in the large swimming pool of our country " Chlorine " ,Little swimming pool spends the bleaching powder generally ' The principal ingredients are calcium chloric acid once) Sterilize and sterilize water in the swimming pool. " chlorine " Why can sterilize? How much quantity is reached to hurt one's feeling? Teacher Li QunYan introduces: Chlorine is turned into after being soluble in water " Chloric acid once " With hydrochloric acid, the sterilization function of chlorine, it is mainly " chloric acid once " . Because of " chloric acid once " Small, does not carry on one's shoulder or back the electricity, it is apt to cross the cell wall; More important, it is a kind of strong oxidant, can damage the cell membrane, make materials such as protein, R N A and D N A,etc. release, and influence and interfere with many kinds of enzyme systems, makes the candy supersession obstructed, thus enable bacterium's death; The function on the virus of chlorine, lie in the sour causing the fatal character damage of core. Chlorine, to the damage of the human body, with paying attention to herein: Chlorine invades the human body through the respiratory tract, dissolve in the moisture that the mucous membrane includes, produce chloric acid and hydrochloric acid once. " chloric acid once " Can enable, organize cells to receive strong oxidizing; Hydrochloric acid is stimulated inflammation swelling happen in the mucous membrane, enable respiratory tract mucous membrane edema, secrete the mucus in a large amount, cause and have difficulty in breathing, so the obvious symptom that chlorine is poisoned is that violent cough takes place. When symptom is serious, the lung edema will happen, and death that cause the heart, lung function to be depleted. On the 26th, " after the stimulating smell for a moment, when a mother feels the throat feels a pain in a swimming hall of Jiang Ning, 3 year old baby of her begin, cough vigorously, small face more aglowly bloated, embrace, go out of behind the swimming pool, the baby has spat a place, then the trick is ice-cold. " Why would the baby still vomit? The reason is, chlorine enters the human body, but " making people sick, vomit, chest paining and diarrhoea " from gullet . Can allow to include chlorine 0 in per liter of air at most. 001 m g, it will cause the human body to be poisoned and reacted to exceed this quantity. Two incident these, chlorine leak lead to the fact. Children are the aptest and is injures chlorine and leaked by chlorine, but will often smell the taste of the pungent bleaching powder in the swimming hall, so safe? Teacher Li QunYan introduces: The function of the chlorine and water is that a kind of reversible hydrolysis reacts. After chlorine is soluble in water, can produce chloric acid and hydrochloric acid once; And chloric acid once and hydrochloric acid function, will produce the chlorine and water, chlorine will assemble on the surface of water. If all is done according to the regulation, the content of chlorine in water, each liter does not exceed 0. 2 milligrams; Swimming pool water p H value is 6. 5-8 . 5 (developed country is 7. 2-7 . 5 ) ,Chlorine overflowing in water would not exceed standard, people are comparatively safe. However, some swimming pools, do not often change the water, keep water of the pool clean in order to the quantity of disinfectant of increasing input; Or it is extensive to operate, control consumption of disinfectant,etc. not according to the standard, cause the chloric acid once in water content to exceed standard. In this way, in reverse reaction, chlorine released in water will increase. Children are short, close to surface of water, there is relatively more chlorine sucked; Children's histoorgan is tender and lovely, it is relatively weak that the immunity protects the mechanism, so will be injured standing in the breach. In summer vacation time, anaphylactia such as the children that a lot of allergic symptoms have originally already disappeared, rhinitis, asthma and papule urticaria recur one after another, question the medical history, find these children have all gone to the swimming pool to paddle (" chloric acid once " ,It characterizes as to be early " Common "anaphylactogen " ). A lot of people thought that went swimming early in the morning, water was clean. But the one that will especially remind is: Swimming pool open just, add less than 2 hours such as disinfectant, with relatively high temperatures at the same time, the environment is calm, chlorine most incident is poisoned and reacted under such a situation. So, the natatorium where the expert advises citizens to choose water quality to be up to standard. Return the smell of water of swimming pool of the important news, the bleaching powder flavor of the nose that if chock, you had better not enter the water. A friend in sportsdom tells, he finds, swimmers are generally all " yellow hair " ,He says in a joking way, they may be under the water from morning till night, the dark hair is " bleaching powder " " float " Have changed color. What he said, there should be certain reasons. So, even if should control the easy time of swimming according to the personal physique in the swimming hall of water quality up to standard. Prime time when the adult swam should be 40 minutes, in order to avoid the injury to the health of chlorine element in water. Moreover, after swimming, must wash completely with the fresh water, and sterilize with soap or bath shampoo, the head, face, foot should be washed especially. Why did the foot wash especially too? Because before people enter the water, will pass " footbath " back and forth ,In order to strengthens and sterilizes in short time, " chlorine " in the footbath Content,that hit compared with swimming pool more double in several. The nasal cavity will gather the secretion after swimming ' Snivel) ,Conditional to spend the dark sea water while being best ' Every hospital of urban area sells) Wash the nasal cavity, in order to remove the snivel, protect the mucous membrane of nose, prevent the rhinitis. The sweat, urine mix a latest research that very carcinogenic U.S.A. carries on with disinfectant to reveal, the organic matter in the swimming pool mixes compound chloroform produced with disinfectant in the swimming pool together, there are carcinogenic dangers. It is published on magazine of " environmental science and technology " that this discovers. Researchers have carried on the assessment to water sample and running water sample from drawing in the public swimming pool. Analyze whether they will cause the genetic mutation to test to the chemical material by product in the water sample through the genetic toxicity of mammalian cell of systematicness, the result reveals, all D N A extent of damage caused through disinfecting swimming pool water sample, exceed the running water. The university of Iraq state of U.S.A. offers as a gift Spreading and studying tile of professor, researcher Michael general fields lying fallow in rotation says: "it have sweat, hair of swimmer, skin, urine to loss at swimming pool ( 1/5 of the adults admit urinating in the swimming pool) And cosmetics and suncream,etc. consumer goods which they used, these things are usually rich in nitrogen, while mixing with disinfectant, they modify, change into noxious substance chloroform. Animal's experiment verifies, even chloroform of quite low density can be carcinogenic. " In order to investigate " The sweat, urine and other organic matter " Mix the health risk that can initiate together with disinfectant in the swimming pool and suffer from the relation of the bladder cancer risk, researchers choose 1219 bladder cancer men and women's patient and 1271 persons who didn't get bladder cancer how to participate in studying, observe them in drinking water, swimming, intensity of contact with water of chlorination while taking a shower, found finally, disinfectant used in swimming pool was really damaged and linked to with the gene, this kind damages emergence that can cause diseases such as asthma, bladder cancer,etc.. Teacher Li QunYan explains its reason: New chemical material chloroform that chlorine element produced after reacting with organic matter in the swimming pool, can combine with the biological macromolecule in the organism, form protein and add and shut things, or D N A adds and shuts things. Protein adds and shuts things, adds on the structure of protein by some other things, this must cause the change of the protein structure. Protein constructs the histoorgan " The brick " ,The protein structure has changed, must cause the change of the histoorgan function, the growth of cells will change too. It is old and feeble that all sorts of changes can accelerate people, initiate respiratory disease, even bring out cancer. If form D N A and add and shut things, can make and is concealed, has lost the function by the position that accords with on D N A, having caused the mixing by mistake of the gene, thus cause gene mutation. Gene mutation, has caused the sudden change of cell, the cells of sudden change grow unorderedly, crazily, cancer has taken place promptly. The American expert participating in studying still points out: This finds first confirmation, these chemical materials are sucked through the respiratory tract, or is absorbed by the skin, it is equally to the healthy extent of injury and swallowing directly. Moreover, once this kind of noxious substance is absorbed by the lung through the skin or through the respiratory tract, it is carcinogenic higher compared with to take a photograph of the affiliation directly, because it is unable to detoxify through the liver. There is a good recipe in toxicity however, this discovers newly, do not mean we need to be far away from the public swimming pool to reduce the swimming pool. American researchers have put forward the simple step, in order to reduce the toxicity of disinfectant, build safer swimming pool environment. Propose: 1st, " disinfectant of water of swimming pool should avoid bromine element " . Bromine is like other halogen in the nature, there is not state of simple substance that exist, its compound often mixes with compound of chlorine together, and the existence of bromine ion, will promote the production of chloroform. 2nd, " the method preferably is to deal with chlorine in water through the ultraviolet ray " . High strength, the ultraviolet system (press the ultraviolet ray when known as again) of the wide spectrum Can degrade free chlorine and chlorine amine in water the by product which become harmless. 3, expert emphasize, " the administrative staff in the swimming pool should remind swimmers not to urinate in the pool! " As to the swimmer, propose: "They should take a shower before entering the pool, may bring to reduce into the organic matter of the swimming pool, and then reduce the genetic toxicity of water of the pool; And will wash after swimming all over, will prevent the carcinogen from being absorbed by the skin. And water in the swimming pool had better not be drunk, if drink into belly because of carelessness, needn't be excessively panic either, so long as drink a little more water, can help the poisonous substance and discharge the urine outside the body. " (Li Lanling)


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