This bowl may be "deadly bowl"?I didn't expect to be so harmful!Throw

Ceramic bowl, imitation porcelain bowl, stainless steel bowl, plastic bowl, wooden bowl, glass bowl ... Which bowl is your home?

Daily dry rice, bowl is one of the indispensable tableware. But have you noticed the bowl for meals?

Some material bowls look beautiful, but long -term use will cause great harm to the body. The media has also repeatedly exposed the "deadly bowl": the formaldehyde exceeds the standard hot soup to become "poison".

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Let's take a look at what bowls are inferior bowls, and which material should be selected.

Is the imitation porcelain bowl called "deadly bowl"?

The texture of the imitation porcelain bowl is similar to that of ceramics. It is not only difficult to break and the heat insulation effect is good, but it is easy to clean without oil. It is widely favored by the restaurant owner.

The imitation porcelain bowl is generally made of deedide resin material. Byamine resin is also called melamine formaldehyde resin. It reacts to reducing the clustering reaction through melamine and formaldehyde.

Seeing this, many people are full of questions, "melamine"? Intersection "formaldehyde"? Intersection Isn't this toxic? Why is it still used to make tableware?

In fact, qualified mighty resin tableware does not produce harmful substances such as formaldehyde when used normally.

The deed amine resin tableware produced by a regular factory generally has a logo, indicating that the use of temperature is between -20 ° C and 120 ° C. Generally speaking, the dense resin is completely toxic at room temperature.

The temperature of the hot soup generally does not exceed 100 ° C, so you can use a bowl of the bowl of the martide resin. However, it cannot be used to pretend the chili oil that is rigid, because the temperature of the pepper oil is about 150 ° C. Under such high temperature conditions, it will melt and release formaldehyde.

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At the same time, some studies have proved that after 2 hours of vinegar with a vinegar with imitation porcelain bowls, the amount of formaldehyde migration increases significantly. Therefore, it is not recommended to use imitation porcelain bowl for a long time to make acidic liquid.

Some small factories will remain in the bowl because the quality of the process is not completely controlled, and the formaldehyde formaldehyde is not fully reacted. When the surface of the bowl is damaged, it will be released. The formaldehyde has been identified as carcinogenic teratogenic substances by the World Health Organization, becoming a big killer that threatens human health.

Stainless steel bowl heavy metals exceed the standard?

Compared with ceramic bowls, glass bowls, imitation porcelain bowls and other bowls, stainless steel bowls are the most resistant to falling.

Stainless steel usually uses iron as a substrate, and then smelled metal such as chromium, nickel, manganese, and molybdenum. Among them, metal impurities such as miscellaneous and cadmium were also participated in lead. The use of inferior stainless steel bowls is migrated above the above metal elements. The accumulation of a certain amount in the human body will cause heavy metal poisoning.

Researchers use a method of inductive coupling plasma quentera to determine arsenic, cadmium, lead, chromium, zinc, nickel, nickel, manganese, copper, aluminum, iron, cobalt, molybdenum, and other metal elements in stainless steel tableware. The law detects nearly 30 stainless steel tableware with different batches, and the above twelve elements are detected.

The metal element migration in stainless steel tableware has a certain relationship with its content. The more metal migration, the more metal migration.

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At the same time, research also shows that stainless steel bowls have increased with the number of uses, and the amount of metal elements in it gradually decreases. New stainless steel bowls are easier to migrate more metal than old stainless steel bowls.

How to use different materials for bowls?

Plastic bowl and imitation porcelain bowl

They are made of high -molecular materials. When unqualified plastic bowls or imitation porcelain bowls are installed with hot soup, there will be the risk of other harmful organic matter such as formaldehyde. If you use a steel ball to brush the bowl, the generated micro -plastic will be intake by the human body.

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Stainless steel bowl

Improper use of risks such as migration of harmful metal ions, so it is not suitable for long -term containing acidic liquid, such as vinegar or lemon juice.

Wooden bowl and bamboo bowl

In a humid environment, it is easy to breed bacteria and mold. Although some wooden bowls and bamboo bowls are applied to a layer of paint to prevent the breeding of microorganisms, this lacquer has the risk of falling off and being consumed by the human body. Therefore, it is best to use some dry foods.

Glass bowl and ceramic bowl

High chemical stability, and qualified tempered glass bowls and ceramic bowls have good thermal resistance. They can be equipped with food at any temperature, and there is no need to consider the risk of harmful substance migration.

How to choose different materials?

Plastic bowl and imitation porcelain bowl

Most of the home "plastic bowls" or "imitation porcelain bowls" on the market are made of dense amine resin. It is best to buy bowls made of well -known brand martial amine resin in large shopping malls. "Imitation porcelain bowl".

Merchants with regular imitation porcelain bowls are generally noticed on the bowl with explanation signs. According to the specific ingredients: A1, A3, A5, A8, be sure to choose A5 or A8. The performance of high temperature resistance will be better.

There is also a plastic bowl that is currently the popular wheat straw plastic bowl. When purchasing, you must pay attention to whether the material of the bottom of the bowl is marked with "wheat straw". Some bowls with "starch" will also impersonate wheat straw bowls.

Stainless steel bowl

When buying, check the label of the bottom of the bowl to have QS marks and product quality certificates, etc. At the same time, pay attention to the content of chromium and nickel in stainless steel. Sorry to buy!

Glass bowl

Divided into different processes: ordinary glass bowls, tempered glass bowls, and high borosilized heat -resistant glass bowls can be distinguished by the identification of the bottom of the bowl.

Ordinary glass bowls are low, easy to break, and easily burst when it is cold and hot

The steel bowl of the tempered glass bowl is good. Generally, the maximum operating temperature does not exceed 300 ° C high -borosilized glass bowl strong high temperature resistance, and the working temperature can reach 450 ° C.

Ceramic bowl

The chemical properties are stable, and there are generally no safety issues. You can buy it with confidence!

Experts in this article ｜ Yang Chao, Ph.D. in Chemistry, University of Chinese Academy of Sciences

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