Not easy to decompose.
Fluorescent agent is not as easy to decompose as general chemical components, but accumulates in human body, which has many harmful effects and greatly reduces human immunity; The combination of fluorescent agent and protein outside the wound will also hinder the healing of the wound; Fluorescent agents will cause the variability of human cells, and their toxicity will accumulate in the liver or other important organs, which will become a potential carcinogen. Damage to blood system: Chemical substances can easily pollute human blood. Although blood has a certain self-purification ability, a small amount of harmful substances will be diluted, decomposed, adsorbed and discharged, but a large number of toxic substances will inevitably change qualitatively for a long time; Entering the blood circulation will destroy the cell membrane of red blood cells and cause hemolysis.
Question 2: What is a fluorescent agent? What is good about it is that the fluorescent whitening agent is a fluorescent dye, or a white dye, and it is also a complex organic compound. Its characteristic is that it can stimulate incident light to produce fluorescence, so that the dyed substance can obtain a flash effect similar to fluorite, and the substance seen by naked eyes is very white, thus achieving the effect of whitening. Its function is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescence radiation, which complements the original yellow radiation to become white light, thus improving the whiteness of the product in the sun. Whitening agents have been widely used in textiles, papermaking, washing powder, soap, rubber, plastics, pigments and paints. Poisonous
If excessive exposure to fluorescent agents, there may be potential carcinogenic factors. Although it has not been proved that how much fluorescent agent absorbs will cause harm to human body, fluorescent agent is listed as one of the potential carcinogenic factors. Fluorescent agents will become potential carcinogens after being absorbed by human body.
Question 3: Is the fluorescent agent harmful? Fluorescent agents do not decompose as easily as general chemical components, but accumulate in the human body.
, produce many harmful effects, greatly reducing human immunity; The combination of fluorescent agent and protein outside the wound will also hinder the healing of the wound; Fluorescent agents will cause the variability of human cells, and their toxicity will accumulate in the liver or other important organs, which will become a potential carcinogen. Damage to blood system: Chemical substances can easily pollute human blood. Although blood has a certain self-purification ability, a small amount of harmful substances will be diluted, decomposed, adsorbed and discharged, but a large number of toxic substances will inevitably change qualitatively for a long time; Entering the blood circulation will destroy the cell membrane of red blood cells and cause hemolysis.
In daily life, there are many opportunities to contact fluorescent agents. As long as it does not exceed a certain standard, it will bring many benefits to our lives. If you come into excessive contact with it, it will do harm to the human body.
carcinogenic substance
Fluorescent agent is a fluorescent dye, or white dye, and also a complex organic compound, which is mainly used as whitening agent.
Scientific experiments show that fluorescent agents are not as easily decomposed as ordinary chemical components after being absorbed by human body. If there is a wound, the combination with protein in the human body will hinder the healing of the wound, and it is very difficult to remove it. Only through the enzymatic decomposition of the liver, which undoubtedly increases the burden on the liver. According to medical clinical experiments, fluorescent substances can mutate cells, and the mutated fluorescent substances can receive electromagnetic waves or radiation with shorter wavelength than ultraviolet rays, and then convert these energies into visible light with longer wavelength.
In this way, if the fluorescent agent is exposed to too much, there may be potential carcinogenic factors. Although it has not been proved that how much fluorescent agent absorbs will cause harm to human body, fluorescent agent is listed as one of the potential carcinogenic factors. Fluorescent agents will become potential carcinogens after being absorbed by human body.
Question 4: Why do many daily necessities contain fluorescent agents? What is this? What is the function and harm of adding it? Ask Baidu to know! Optical brightener is a kind of fluorescent dye or white dye, and it is also a complex organic compound. Its characteristic is that it can stimulate incident light to produce fluorescence, so that the dyed substance can obtain a flash effect similar to fluorite, and the substance seen by naked eyes is very white, thus achieving the effect of whitening. Its function is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescence radiation, which complements the original yellow radiation to become white light, thus improving the whiteness of the product in the sun. Whitening agents have been widely used in textiles, papermaking, washing powder, soap, rubber, plastics, pigments and paints. Poisonous
If excessive exposure to fluorescent agents, there may be potential carcinogenic factors. Although it has not been proved that how much fluorescent agent absorbs will cause harm to human body, fluorescent agent is listed as one of the potential carcinogenic factors. Fluorescent agents will become potential carcinogens after being absorbed by human body.
Question 5: What is fluorescent agent and what harm does it do to your health? Fluorescent agent is a strong carcinogen, which is very harmful to human body.
Question 6: What harm does fluorescent agent do to people? Danger:
Fluorescent agent is not as easy to decompose as general chemical components, but accumulates in human body, which has many harmful effects and greatly reduces human immunity; The combination of fluorescent agent and protein outside the wound will also hinder the healing of the wound; Fluorescent agents will cause the variability of human cells, and their toxicity will accumulate in the liver or other important organs, which will become a potential carcinogen.
If you have chest pain, nausea, vomiting, diarrhea, dizziness, bloody stool and other symptoms after taking it by mistake, you should induce him to vomit as soon as possible, and you can use fingers or feathers to * * * his throat to make him feel sick. After vomiting, you can take milk, egg white, soybean milk, thick rice soup and peanut oil orally and send them to the hospital for emergency treatment in time. After taking a small amount of fluorescent agent by mistake, the hospital should give him gastric lavage and enema, and use some drugs to protect the gastrointestinal mucosa. At the same time, try not to eat for a day or two, rest for a few days, and you will recover.
Inspection method: use the kind of lamp that shines on the banknote, but has reflective light.
Question 7: What are the main components of phosphor? In order to find out the chemical composition of phosphor, we first thought of the luminescence of fireflies. The luminous principle of fireflies mainly has the following series of processes.
Photoforming protein+photoforming enzyme contains oxygen to form photoforming protein (emitting green light).
Oxyluminescent protein ++H2O luminescent protein.
This is why fireflies can shine continuously, and the light will flicker. It is worth noting that the green light emitted by fireflies is a kind of cold light with a conversion rate of 97%.
Secondly, we pay attention to the luminescent properties of luminescent plastics. Luminous plastics are mainly doped with some radioactive substances, such as 14C, 35Sr, 90Sr, Na, th and luminescent materials ZnS and CaS, which are excited to emit visible light (cold light) under the irradiation of radioactive light.
Including:
kind
chemical formula
colour
density
Red powder
Y2O3: EU
white
5. 1 0.2
Green powder
cemgl 1 1o 19:Tb
white
4.2 0.2
Powder Blue
BaMgAl 10O 17: EU
white
3.7 0.2
Shuangfeng powder blue
BaMgA 10O 17: (EU, Mn)
white
3.8 0.2
Upconversion phosphor, namely infrared excitation phosphor, comprises the following components:
Chemical composition: YErYbF3
Appearance: white inorganic powder
Particle size: 30 nm
Excitation wavelength: 980 nm
Luminous color: green light
Features: high light transmittance, strong solvent resistance, acid and alkali resistance.
The luminescence phenomenon of matter can be roughly divided into two categories: one is that the matter emits heat radiation when heated, and the other is that the object is stimulated to absorb energy, transition to the excited state (unstable state), and release energy in the form of light when returning to the ground state. Most luminescent materials with rare earth compounds and rare earth elements as activators belong to the latter category, namely rare earth phosphors. Rare earth atoms are rich in electronic energy levels, because 4f orbitals exist in the electronic configuration of rare earth atoms, which creates conditions for various energy level transitions and thus obtains various luminescent properties. Rare earth is a huge treasure house of luminescent materials, in which rare earth elements play a very important role.
Cathode ray luminescent material-phosphor for display
Mainly used in TV, oscilloscope, radar, computer and other fluorescent screens and displays. Rare earth red phosphors (Y2O3∶Eu and Y2O2S∶Eu) are used in color TV screens, which makes the brightness of color TV reach a higher level. Blue and green phosphors still use non-rare earth phosphors, but La2O2S∶Tb green phosphors have good luminescent characteristics and have a bright future. Recently, the color TV is EBU (European Broadcasting Union) color, and the red powder is Y2O2S∶Eu. Computers don't pay attention to color reproduction as TV sets do, but mainly focus on brightness, so use red with stronger orange, and the Eu content in Y2O2S is usually 5 ~ 7 wt%. The content of Eu in red powder of color TV is about 1.5 times that of computer.
When light is received, one substance is transformed into another, emitted and returned, which is the transformation of chemical energy.
Question 8: What are the main uses of fluorescent agents? Make clothes brighter and brighter,
However, because the fluorescent agent is a chemical substance, it will dissolve in the liquid and migrate with it, so it is difficult to remove it. Therefore, once the fluorescent agent in the laundry detergent is attached to the clothes, it should be washed with a washing machine, so there is no need to worry about being washed off, which is harmful to people's skin and body. So choose clothes that don't contain fluorescent agents, not laundry treasures.
Question 9: What is a fluorescent agent? Fluorescent agent is a dye, or white dye. Its characteristic is that it can absorb incident light to produce fluorescence, so that the dyed substance can obtain a flash effect similar to fluorite and achieve whitening effect.