"You're still using this bottle? Do you want to go to the hospital! ”
My family's grains and seasonings are all used in bottles, isn't it convenient? ”
Xiao Wu was brought up by his grandparents, and he developed a thrifty habit under the influence of his ears and eyes, and even the plastic bottles that are usually used up at home will not be thrown away directly, but kept to continue to fill water or food.
Until some time ago, his girlfriend couldn't bear to push him an article, and the experts in it saidThe use of plastic bottles can easily cause cancer, which made Xiao Wu panic, could it be that there was something wrong with his body?
There are rumors on the Internet that disposable plastic bottles with a "1" style at the bottom of the bottle should never be used again, otherwise it will increase the risk of cancer, is this true?
Actually, the number at the bottom of the plastic bottle refers toIndicate the different materials, which is a mark for the type of plastic used by the American Plastics Industry Association**. among others"1" refers to PET material, that is, polyethylene terephthalate. This material itselfNon-toxic and odorless, andGood hygiene and safetyIt is mostly used to make mineral water bottles and carbonated drink bottles.
The rumors are not limited to these, I believe everyone has heard that bottled water after exposure to the sun cannot continue to drink, otherwise the water inside will threaten health like poisonous water.
Several institutions have studied the substances that may be precipitated in plastic bottles, and the results have not found that toxic substances will be produced in PET bottled water after exposure. But,The heat resistance of PET material is 70 degrees CelsiusIt is easy to deform after exceeding this temperature, and it is generally not recommended to use it many times.
As for the question of whether plasticizers cause cancer, they are listed by the WHO's Agency for Research on CancerGroup 2b carcinogens, i.e. substances that may cause cancer to humans, but for which the evidence is unclear. Moreover, PET itself is a soft plastic material, which is very flexible and can be processedNo additional plasticizers will be added, so there's no need to worry too much.
Whether it's a beverage bottle, a disposable lunch box, or other plastic products, we can see some signs on it, and different logos represent different meanings.
If there are two arrows pointing horizontally to the opposite side, the plastic product is "reusable".
The following triangle made of arrows should be more familiar to everyone, many people mistakenly think that this is a reused sign, but in fact it is"Recyclable".Logo:
Under normal circumstances, there will be a number from 1 to 7 in this triangle, and different numbers represent different resin raw materials, among which our most common No. 1, that is, polyethylene terephthalate, commonly known as PET material. Most of the mineral water bottles, beverage bottles and disposable lunch boxes we mentioned above are made of this material.
As long as this material is used normally in accordance with the regulations, there is no harm to human health, but if it is used like the following types, there are certain health risks.
Hold high-temperature liquids.
When we used to be children, we always liked to bottle hot water with mineral water. This generation of children, because the current beverage bottles are designed to be relatively high, so they are used to fill hot water.
As everyone knowsPET is not resistant to high temperatures and can only hold food or hot water below 70Once this temperature is exceeded, the plastic bottle will deform and migrate out harmful substances that are harmful to human health. In addition, some people like to take bottled cooking oil, and most of them are still placed next to the stove, which is also dangerous. Because long-term high temperatures will also exacerbate the migration and diffusion of harmful substances in plastic bottles.
Change the thing that is in bloom.
These plastic bottles were originally used to hold water, drinks, juices and tea, but in real life some people are used to using them to hold vinegar. Not only at home, but also in fast food restaurants and small restaurants outside, we can often see this kind of bottled vinegar with drinks.
The pH of vinegar is very low, and the vast majority of PET plastic bottles are likely to be produced with a metal catalyst called "antimony". This "antimony" has an increased migration rate in both acidic and alkaline environments. Antimony has a certain biological toxicity to our**, heart, kidneys, liver and other tissues and organs。Although the damage and impact of small doses of antimony on the human body is not obvious, it is afraid that it will accumulate over time for a long time, which will inevitably cause irreparable damage to the human body.
Hold something for a long time.
Since plastic bottles can't be used to hold spices such as hot water, oil, and vinegar, it's okay to use them for rice, millet, beans, etc., right? It seems to be seamless and flawless, but in fact there are big holes. Beverages and bottled water have a shelf life, in fact, this shelf life is not only the shelf life of the product itself, but also the shelf life of the plastic bottle.
Do plastic bottles also have an expiration date? Many people may have heard of this concept for the first time, and in fact PET will age with long use and exacerbate the migration of harmful substances. When we use plastic bottles for rice and beans, we usually pack them for a long time, and many of them are still placed next to the stove, which naturally has health risks.
3. The study found that the harm of glass bottles is 4 times that of plastic bottles
After talking about the harm of plastic bottles, everyone must be particularly curious about the harm of glass bottles, after all, it is 4 times higher than plastic bottles. Just listening to the numbers can be particularly intimidating, because glass is more widely used in our lives than plastic.
The harm of glass is mainly in the production, first of all, the impact on the environment, you must know that the raw materials of glass bottles are mainly minerals, if you want to produce glass bottles, you need mining, you need a lot of silica sand, dolomite and other minerals and chemicals, and many of them are toxic. The impact of these substances on the environment during the mining process is very large, and in the process of mining, it will cause pollution to the surrounding land, rivers and the general environment.
The second is the injury to workers, knowing that mining needs to be done manually, and it is difficult to ensure the health of mining workers on the way to work. In glass raw materials, the volatilization of harmful substances in the accumulation of time, it is inevitable to suffer from serious occupational diseases, especially to the respiratory system and lungs, which can be said to be fatal.
Finally, there are the hazards that arise from the manufacturing process, and although the process of producing glass bottles is simple, there are many potential hazards. According to Alice Brock of the University of Southampton, heating raw materials to make glass requires a lot of energy, and a lot of chemicals are added in the process of producing glass bottles, which then release harmful gases such as carbon dioxide and sulphur dioxide, which can cause serious pollution to the earth's environment.
Which cup is safer to drink water?
Bowls and drinking glasses are the utensils that we come into contact with the most every day. Many people just like it and buy it, but in fact, the choice of material is different, and the impact on health is also different.
Selection order: glass, ceramic glass, stainless steel cup, plastic cup
1. Glass
The healthiest and safest, no organic chemicals, and no harmful substances are leached. It's best to chooseClear glassesBecause most of the colored glasses on the market are made of added pigments, which may contain heavy metals.
Choose a glass with no bubbles and impurities, and the object is basically out of shape when you see through the cup.
2. Ceramic cups
The glaze on the ceramic cup contains heavy metals such as lead, which may have certain safety hazards.
So it's better to chooseUncolored glaze, i.e. the inner wall is white, which is the safest.
I choose nextMedium-glaze or underglaze, that is, the inner wall has colored glaze, but the surface is smooth to the touch.
The most is the lastOverglaze, that is, the surface is uneven, and it will fall off when picked with nails, so it is best not to buy it.
3. Stainless steel cup
Inferior stainless steel, which will ooze out metals such as chromium and manganese, will have adverse effects on the human body. So be sure to buy a water cup made of food-grade stainless steel (such as 304 steel), or medical stainless steel (such as 316 steel).
4. Plastic cups
There are many types, and generally the product number at the bottom represents the respective use, such as:
PET (cannot be recycled to fill hot water);
HDPE (do not recycle);
PVC (cannot be heated), PC (cannot be heated), etc.
As a drinking glass, it is better to buy food-grade plastic, i.e. PP material (polypropylene, label 05).
In general, it is best to choose the above 4 kinds of water cups, and like enamel cups, there is a risk of heavy metal precipitation, disposable paper cups, there may be a large number of plasticizers and fluorescent brighteners, the so-called "magnetized cups", "energy cups", are business gimmicks, without any health care significanceNot recommended
Plastic bottles generally do not affect health when used correctly, so there is no need to worry too much about this. I still want to remind everyone again that when choosing a cup, you must choose a regular manufacturer, and the quality will be more guaranteed.
Xiaohan talks about health