Recently, two videos on liquid detergents containing fluorescent agents have attracted widespread attention on the Internet. Video shooters said that some well-known brands of liquid detergent contain a large amount of fluorescent agents and extremely difficult to remove, and urged the public to resist detergents containing fluorescent agents. There are two videos that have been widely distributed on the Internet. The hero and heroine washed their hands with two brands of laundry detergent. During the process, the ultraviolet light illuminates the fluorescent agent to produce a bright reaction. The video shooter pointed out that the content of the fluorescent agent in the liquid detergent is very high, and the fluorescent agent is a carcinogen. The fluorescent agent on the skin surface needs to be washed with water for more than 100 times before it is cleared. If the cleaning is not complete, the skin and blood can be infiltrated after 68 seconds. .
In order to verify the two videos, the reporter randomly purchased four types of liquid detergent from the market. In addition to the Tide and Blue Moon in the video, they also included Bilang and Luowa.
At the same time, in order to detect whether the fluorescent agent still has a large amount of residue after washing, the reporter also purchased four square-absorbent towel pads and ultraviolet lamps.
Ultraviolet rays react to some brands
First, the reporter poured four liquid soaps on the table and irradiated them with ultraviolet light.
15 seconds after skin cleaning is difficult to see on the surface of the skin
The reporter then applied 4 liquid detergents to his hands and rinsed with water for 15 seconds. After repeated washing, the laundry liquid quickly dissolves in water. When viewed with ultraviolet light, in addition to the slight bright reaction at the nail, it is difficult to see the reflection of the fluorescent agent on the skin surface of both hands.
Dissolve the solvent in the fabric after cleaning and cleaning the square towel
The reporter mixed the prepared square towel with four detergent liquid solvents. When irradiated with an ultraviolet lamp, it can be seen that the fluorescent agent has penetrated the fibers of the square.
The fluorescer itself has a self-limiting business without overdosing
Regarding the problem of fluorescent agents in laundry detergents, the reporter contacted Wang Xueren, head of the expert committee of the Sino-Lianyin dyeing and dyeing committee and expert group leader.
Director Wang told the reporter that the so-called fluorescent agent, also called fluorescent whitening agent, is an organic compound that emits blue light and blue-violet light after absorbing ultraviolet light.
In general terms, fluorescent whitening agents use optical complementary effects to whiten, brighten, or brighten white or light-colored items (such as textiles, paper, plastics, etc.) without any chemical reaction between them. It depends on the optical effect to increase the visual whiteness of the object.
"For example, our white clothes will yellow when worn for a long time. After washing with a fluorescent agent, the fluorescent agent will absorb the ultraviolet rays in the sunlight and reflect light, so that the clothes look more white." Wang Xueren said.
In the video, the photographer constantly emphasizes that there is residue in the fluorescer, which is the concept of stealing the residue. “Because there is a fluorescer attached to the clothes, the whitening effect is achieved. If there is no residue, then why should we use it to wash? Clothes? No sense at all," said Wang Xueren.
Wang Xueren believes that it is not practical for photographers to report that the liquid detergent contains a large amount of fluorescent agents. Since the fluorescent agent has "self-limitation", once the dose is too large, the whitening effect is reduced, and the whitening effect is lost. Therefore, although there is no clear definition of the amount of fluorescent whitening agent added in the laundry liquid in China, there will not be any overuse of commercial products.
When the ultraviolet light shines on the nails, there are still some bright reactions at the nails. Wang Xueren said that since the nails contain phosphorous, the luminescence reaction will occur regardless of the presence of fluorescent agents.
Harmless to the human body to buy more regular products can be cleaned several times
Wang Xueren said that since the 1950s and 1960s, the safety of fluorescent whitening agents has been widely studied. The results showed that fluorescent whitening agents are not irritating to the skin and eyes, and have no skin sensitization and phototoxicity. Toxicity and transdermal toxicity are non-toxic or low toxic.
"The so-called low toxicity is a problem of dose, just like salt itself is non-toxic, but people will dehydrate when they eat too much. When you come back to talk about fluorescent agents, if you drink a big bottle, it will definitely affect health." Wang Xueren said .
Wang Xueren stated that today fluorescent brighteners are widely used in various fields, including textiles, washing, paper making, plastics synthesis, and even biomedicine, etc. Fluorescent brighteners have been used for more than 70 years, and so far there have been no optical brighteners. Cases of illness or personal injury.
“The so-called fluorescein carcinogens and delaying blood clotting have not been proven so far. The reason why this negative view is still continuing is that people have not noticed that toxicologists have already overthrowed this kind of arguments through research. The malicious marketing of the business intentionally promotes and exaggerates the harmfulness of fluorescent agents, said Wang Xueren.
Wang Xueren emphasized that as long as the public purchases quality-guaranteed washing products produced by regular manufacturers, there are no problems that endanger human health. It is unnecessary to worry about washing the clothes with water several times to reduce the residue of fluorescent agents on the clothes surface. (Legal Evening News)
For more content, please follow this site
Stripe Fabric,Shirting Stripe Fabric,Striped Patchwork Fabrics,Stripe Printed Fabric
Shaoxing Yingcheng Textile Co.,Ltd , https://www.sxyingcheng.com