Traditional Culture Encyclopedia - Photography major - Is the photo crystal film poisonous?

Is the photo crystal film poisonous?

Formaldehyde confession: ladies and gentlemen, you always thought that I only appeared during the decoration, and I was all wet! Today, I tell you that every wedding photo you take and every bottle of beer you drink may have my shadow in it.

As a well-known carcinogen, I know that I am not welcome. However, I don't want to cause trouble to mankind. It was humans who brought me to harm the world.

Today, please follow this report and see how I walked into the wedding photos and your bedroom-

The pungent smell of wedding photos was originally caused by formaldehyde.

On July 10, Miss Zhang, who lives in Jingba Road, called the reporter: Recently, there is always a pungent smell at home, and I don't know why. It was not until the 9th that she saw a report that "customers complained about the wedding photography company because of the odor and formaldehyde in the wedding photos" that she remembered that there might be something wrong with the wedding photos.

According to the report read by Miss Zhang, on February 26th last year, Mr. Guo, a Beijing citizen, took a group of wedding photos with his wife, and hung a 30-inch, 24-inch, 12-inch and 10-inch photo in the bedroom in late October this year. Since then, there has been a pungent smell like alcohol volatilization in the bedroom. At the beginning of May, Mr. Guo's wife accidentally discovered that the smell came from these four photos. Mr. Guo sent the photos to the Indoor Environment Testing Center of China Interior Decoration Association for indoor air quality testing. The test results show that the formaldehyde concentration in the photo is seriously exceeding the standard.

"Wedding photos can still go wrong, which is a bit scary." Miss Zhang said. In the interview, the reporter found that, like Miss Zhang, many people were surprised by this. "This is the first time we have heard of it." They said.

The photo won't contain formaldehyde, and the studio staff vowed.

Do wedding photos contain formaldehyde? Does the studio know about this? What do you think? The reporter made unannounced visits to several photo studios in the name of taking wedding photos.

In a photo studio on Erqi Road in Zhengzhou City, a service lady warmly received the reporter. She took out relevant brochures for reporters to see, with a booklet and a single photo made of "crystal". After taking photos, the reporter asked how to make it later. The waitress said it depends. First, stick double-sided tape on the photo paper, then put the photo, and coat a layer of cold-mounted film on the photo. The "crystal" is wrapped in a layer of "crystal" like plexiglass.

"There is glue and crystal on it. Will it taste? " The reporter asked.

"no! Our quality is guaranteed! "

"But I heard from my friends that some of them will produce odor."

"It may have existed when it was first made, but it will soon disappear."

"What is a crystal?"

"This is a kind of compound glue. Apply it to the photo like varnish and it will become transparent after solidification. "

"Since it is a compound glue, it will evaporate. Will it produce toxic things, such as formaldehyde? "

"No way. Why is there formaldehyde in the photo? I don't understand this. This is a technical issue that is beyond our understanding. "

"Did you do the post-production of the photo yourself?"

"yes! We have our own post-production company in the western suburbs. "

The reporter then investigated several well-known wedding photography shops and asked whether it was post-processed by their own professional departments or companies. They all answered "yes" in a positive way, and said that the photos they took absolutely did not contain formaldehyde.

Senior exposure insider: Does the studio rely on "black shop" processing in the later stage?

Can the words of the studio staff be trusted? In order to verify its authenticity, the reporter contacted Mr. Liu, a veteran of Zhengzhou wedding photography. Mr. Liu once opened a photo studio in Zhengzhou for nearly 10 years, but now he has changed his profession.

Mr. Liu said that it is true that some wedding photo albums produce odor, because wedding photo albums and photo frames need to be bonded with glue. If inferior adhesives are used, formaldehyde will easily exceed the standard. The so-called "crystal", "colored glaze" and other picture frames are also made of chemical synthetic products. Especially "Crystal", a chemical product containing many harmful substances such as formaldehyde, is prone to produce pungent smell. Especially when it is hot and humid, the smell may be more serious.

Obviously, the smell of wedding photo albums is mainly produced in the post-production process, but who will finish the post-production of the photo studio? Mr. Liu said that as far as he knows, only one wedding photography company in Zhengzhou has its own professional production department, and the rest are processed by small factories outside. There are many such small processing plants. They rented a small courtyard in the suburbs and rural areas, hired dozens of workers and started their own businesses. To put it bluntly, it is a "black shop."

"In order to get more business, these small processing plants have a price war with each other, so their profits are getting lower and lower. In the case of low profits, they will definitely find ways to cut corners. For example, choosing cheap alternative products in the use of adhesives is more likely to cause harmful substances such as formaldehyde to exceed the standard. " Mr. Liu said. Why doesn't the studio set up its own production department? Mr. Yang from the planning department of the wedding photography construction road headquarters in Dazhong Yuan said that setting up a production department is equivalent to setting up another store in the company, which requires special places and personnel and a lot of manpower and financial resources. "Without enough strength, it is difficult to start a business. Our company has demand and strength, so it opened. " Another person in charge of the store told reporters that they pay more attention to post-production and all photo production is completed in Shanghai.

Shop assistant: The smell in the workshop is so strong that most people can't stand it.

Mr. Liu said that those small processing plants that carry out post-production generally maintain business relations with dozens or even hundreds of photo studios, printing shops and developing shops. In order to further understand the situation of these processing plants, the reporter met Mr. Li, a salesman of a processing plant, in front of a developing shop in huanghe road on the grounds of opening a photo studio and cooperation.

Mr. Li introduced the situation of their factory to the reporter: their factory rented a yard in a rural area in the western suburbs, with more than 20 buildings and more than 30 staff. They only undertake the production of crystal wedding photos, and currently maintain cooperative relations with more than 50 photo studios and color expansion stores. Mr. Li revealed that his boss also held a photo production training class, and each student charged hundreds or even thousands of dollars for training. There are many people studying, and he entered the factory after training.

"It is said that the crystal craft will produce a pungent smell, don't you feel it?" The reporter asked. Mr. Li replied that the smell of their studio was obvious, and if it was the first time, it would definitely be unbearable. But you'll get used to it after a long time. Mr. Li admits that this kind of environment is really harmful to the human body. Many people will leave after working for a period of time, and there are not many who can persist for a year. It was because he couldn't stand the smell that he switched to business.

The reporter asked to see their processing plant on the grounds that he wanted to see the strength of their company. Mr. Li hesitated for a moment and said that he would not disclose the specific address of the factory until the reporter's photo studio opened.

The smell of "crystal photos" is suffocating and garbage is everywhere. The reporter obtained the address of a processing factory specializing in making crystal photos through the familiar studio owner. It took the reporter more than two hours to find this small factory located in a family hospital in the West Third Ring Road. Under the guidance of an old man, the reporter went through a pile of garbage dumps where flies were flying around and through a narrow path before entering this very hidden small courtyard. There are only two dilapidated tile houses and an abandoned water tower overgrown with weeds in the yard. Through the low door of the water tower, the reporter saw that there was a machine for polishing photo frames, and there was a stack of half-processed photo frames next to the machine, which was so narrow that the smell in the space was choking.

The reporter entered one of the houses on the grounds that he urgently needed to process a batch of photos, but found that it was full of raw materials for making photo frames and various barrels of chemical raw materials. A woman and a 16-year-old boy are cleaning the glue on the finished photo frame. The pungent smell made the reporter's eyes astringent, and after a while he shed tears unconsciously. The reporter asked the woman: "Don't you feel uncomfortable working in it for a long time?" The woman pointed to five or six cups of sticky disposable cups and said, "Smell how bad it is. The smell in the house comes from there. Although we can't stand it, there is nothing we can do! I have to endure it. " The woman said she was from Wuhan, Hubei.

"Crystal" turned out to be a big barrel of poisonous 300 yuan.

I heard that someone came to contact the business, and the boss, Mr. Deng, came from another room and showed the reporter the crystal photos they made. Among these finished products, the reporter actually found the names of four or five well-known wedding dress shops in Zhengzhou, and when the reporter interviewed three of them, all three claimed to have their own specialized production companies.

"The quality is absolutely guaranteed. There are 13 photo studios in Zhengzhou City that rely on us to make crystal photos. " Boss Deng said. The reporter told him, "We also contacted them, and they all said they had their own post-production company." "Impossible, no studio in Zhengzhou has its own post-production company, and their post-production depends on us. If they all have production companies, a small company like ours can't survive. " Boss Deng said.

Seeing two teenage girls drawing something like glue on a photo frame, the reporter picked up a cup and smelled it. A girl smiled and said, "It's poisonous, don't smell it!" The boss pointed to two barrels of chemical raw materials in the corner and said, "What you smell is crystal, a barrel of 300 yuan." The reporter saw the words "resin" on it, which gave off an unpleasant smell. The reporter also saw a rusty canned oil drum. Boss Deng said that it was filled with glue, but the reporter found that there was no logo. The reporter asked if boss Deng did it himself, but he didn't answer.

The reporter didn't see any license in the processing factory. Boss Deng said there was no need to do it, because it had been open for three years and no one had checked it.

Expert: You can spray remover to remove formaldehyde pollution from picture frames.

At present, there is no relevant regulation on formaldehyde content in wedding photos, but for consumers, removing formaldehyde from wedding photos is a very realistic problem. Wang Weiping, head of Zhengzhou Branch of Indoor Environmental Monitoring Center of China Interior Decoration Association, said that small factories responsible for post-production of photos may cheat in material selection, such as choosing low-quality plates and inferior adhesives. These inferior adhesives are mainly urea-formaldehyde resin and phenolic resin, which are generated by the reaction of formaldehyde and other substances. Because the synthetic process is relatively simple, the formaldehyde reaction is incomplete, and these unreacted formaldehyde is in a free state, so it will be released slowly when used in photo frames and photo albums. Crystal may also be a polymer resin with good technology, which contains free formaldehyde. Generally, if formaldehyde contained in interior decoration materials is not removed, it may take more than ten years to be completely released, while photo frames are not so serious, but it will take at least one or two years.

Wang Weiping said that the standard of formaldehyde in indoor air is 0.08 mg/m3, which smells seriously exceeding the standard.

Wang Weiping said that for formaldehyde pollution in decoration, sealing agents, formaldehyde capture agents and formaldehyde elimination agents are mostly used. If citizens find that the photo frame is polluted by formaldehyde, they can spray some remover on the back of the photo frame.

Harm of formaldehyde

Formaldehyde is a highly toxic substance, ranking second in the priority control list of toxic chemicals in China.

After formaldehyde is released into the air, it enters the human body through human breathing and contact, resulting in toxicity.

The following are poisoning symptoms caused by excessive formaldehyde content:

1, irritating smell and discomfort;

2. Stimulate eye tears and mucosal edema;

3, throat discomfort, mucosal edema and pain, skin allergies;

4, headache, nausea, vomiting, cough, chest tightness, asthma, general weakness, palpitations, insomnia;

5, causing persistent headache, pneumonia, pulmonary edema, loss of appetite, and even death;

Long-term exposure to low-concentration formaldehyde can cause respiratory diseases, eye diseases, menstrual disorders in women, pregnancy syndrome, neonatal malformation, mental depression and so on.

My name is formaldehyde, which is a colorless and soluble gas. You'd better leave me alone. People who have been in contact with me for a long time can cause many kinds of cancers. As we all know, I often use it for painting and furniture decoration. However, you know that I am often added to beer now, and it should not be a good thing for people to drink me. I heard that the domestic beer industry also triggered a "crisis" because of me. In fact, I don't want to endanger people's lives, but someone imposed my life on others for various purposes. ...

Henan beer can be safely drunk.

A letter from a reader

Once again set off a "formaldehyde storm"

In mid-June this year, the editorial department of Global Times received a letter from a reader, which wrote: "I am a beer researcher and want to talk to you about the current situation in which many breweries use formaldehyde as a stabilizer. At present, adding formaldehyde to domestic beer is a tacit regulation in the industry. There is only one reason, formaldehyde is too cheap! However, if beer enterprises want to survive, isn't the interests of ordinary people important? The purpose of writing this letter is to let more consumers know about it through your report, because they have the right to know! "

This letter once again set off a long-lost "formaldehyde storm" in China beer market. In the peak season of beer consumption in July, will this storm trigger a "beer formaldehyde crisis"?

Oak once put forward "formaldehyde crisis"

The beer market in Henan is tense.

The initiator of the "formaldehyde storm" in beer is Jinwei Beer.

As early as March 28th, 2003, South China Jinwei Beer declared that Jinwei Beer was the first beer manufacturer in China that did not use formaldehyde as an additive. In July, the beer giant Tsingtao Brewery followed suit, claiming that Tsingtao Brewery had already taken the lead in not adding formaldehyde to beer in China. Tsingtao Brewery's statement triggered a "formaldehyde crisis" in the beer industry.

The beer market in Henan has also been hit by the "formaldehyde crisis".

In February last year, Henan Oak Beer took the lead in listing. Aoke Beer has successively published advertisements in provincial capital newspapers entitled "The beer market encounters formaldehyde crisis" and "The formaldehyde crisis stirs up the beer market".

Other beer producers in Henan province were soon under pressure and tension, and more than a dozen beer producers reported to Henan Brewing Industry Association one after another, demanding that oak beer stop "hype". After the coordination of the association, Oak tried to avoid using the word "formaldehyde crisis" in future publicity.

Xiong, former secretary-general of Henan Beer Industry Association and now executive vice president and secretary-general of Henan Liquor Industry Association, said: The association came forward to coordinate because it was worried that the "formaldehyde crisis" of oak beer would easily cause consumers to panic and lead consumers not to drink beer, which caused a heavy blow to Henan beer producers. In fact, the formaldehyde in beer has not reached the level of causing industry crisis. "We certainly encourage the production and promotion of formaldehyde-free beer, but the industry crisis and storm are a bit exaggerated."

Enterprises "love" formaldehyde only because of the cost dilemma.

Xiong Yuliang introduced that formaldehyde is a stabilizer, which has a strong bactericidal and antiseptic effect and can remove the sediment produced during beer manufacturing and storage. However, because formaldehyde is recognized as a suspected carcinogen by the International Agency for Research on Cancer, European countries have banned the use of formaldehyde in beer.

Some experts also pointed out that although the formaldehyde content is lower than 0.2 mg per liter, it is safe, but drinking in large quantities will also increase the burden on the liver, and long-term drinking will also affect reproductive capacity. At present, European beer manufacturers have solved the precipitation problem through non-toxic solutions, but the cost is higher, which is "several times higher" than using formaldehyde.

Xu, director of Henan Aoke Beer Planning and Propaganda Department, said that technically, formaldehyde is not used as a stabilizer.

No problem, but many manufacturers don't give up using formaldehyde because of the existence of these large enterprises.

Cost dilemma. The stabilizers used in oak beer are quinine and carrageenan instead of formaldehyde, but the cost of each bottle is increased by two cents, which means that it costs about 3 1 yuan to produce a ton of beer, which is not a small sum for beer manufacturers. "Not suitable for large enterprises, because the more production, the more losses. This is why only powerful enterprises like Qingdao do it. However, it is more suitable for beer producers in the middle and lower reaches with moderate prices, such as Jinwei Beer and Oak Beer. Because it does not harm the overall interests. " Xu further analyzed.

The manufacturer is not surprised this time.

Compared with the "formaldehyde crisis" initiated by oak at the beginning, this "formaldehyde storm" has not caused much waves in Henan beer production enterprises.

Wang Zhi, general manager of Henan Jinxing Beer Group, said that in fact, "not adding formaldehyde does not mean that beer does not contain formaldehyde." Even if the new technology is adopted, a small amount of formaldehyde will be produced in the brewing process. And as long as the formaldehyde content does not exceed the standard, the process of adding formaldehyde is allowed by the state. The harm of trace formaldehyde to the body is not as serious as imagined. Venus's reaction to this "formaldehyde storm" is more rational. Wang Zhi said that it is not surprising that Venus stopped using formaldehyde long ago. Oak beer, the initiator of the "formaldehyde crisis" in Henan beer, is also relatively calm about this "formaldehyde storm". Xu said that when Oak raised the formaldehyde crisis at the beginning of last year, it was really a sensation in Henan beer industry, and more than a dozen beer companies stood up and expressed their concern about affecting the market. But now it seems that this kind of worry is a bit redundant. He analyzed that this may be related to the fact that people are still in the primary consumption stage and have not deeply understood food safety consumption.

Consumers don't care much about formaldehyde in beer.

Beer contains formaldehyde. How many consumers know? The reporter conducted an interview at random.

In an interview with an open-air barbecue stall in Ruhe Community, Zhengzhou, the reporter found that many people don't know about formaldehyde in beer and don't care much. Mr. Zhang, who is drinking beer with friends, said, "I like to drink a little when I am free all day, but I have no discomfort to my body."

Mr. Niu, sitting next to Mr. Zhang, had heard of formaldehyde in beer before, but he didn't care too much. After listening, the reporter picked up the oak beer he drank and found that it said "the first formaldehyde-free process in Henan". "It seems that there is such a thing." Mr. Niu said that formaldehyde is harmful after all, and the less contained in beer, the better.

The formaldehyde residue in beer in Henan market is low.

What's the formaldehyde content in beer? Is the beer in Henan market safe to drink?

Xiong said that according to the national hygienic standard for the use of food additives, the state allows the use of formaldehyde in beer production. However, the state does not limit the residual amount of formaldehyde in beer, and enterprises do not have a strict standard in production. With the recognition of the harm of formaldehyde, the state will clearly stipulate the formaldehyde content in the revision of the Hygienic Standard for Fermented Wine: the allowable range is 1 liter of formaldehyde in beer.

What is the formaldehyde content of beer in Henan market? Last year, Henan Liquor Industry Association specially bought more than 20 kinds of beer from the market, including well-known brands at home and abroad and brands in the province, and sent them to the National Food Inspection Center for testing. According to the test results, all the beer tested contained formaldehyde. The average residual formaldehyde in beer on the market in Henan Province is 0.3 1 mg per liter, the highest is 0.60 mg per liter, and the lowest is only 0.08 mg. "The formaldehyde residue in beer without formaldehyde is relatively low, but it is not the lowest."

"Overall, the beer formaldehyde residue in Henan beer market is relatively low and relatively safe. Here,

In this case, consumers can rest assured to drink. "Said the bear.

Research on food safety should be strengthened.

Xiong believes that although it is a bit excessive to raise the "formaldehyde crisis" to the crisis of the whole beer industry, the "formaldehyde storm" in the beer market should make people re-recognize the research problems of food safety.

Xiong said that the relevant regulations on formaldehyde content in beer have been introduced for many years. At that time, people's understanding of formaldehyde may not be in place. Now China Beer Branch is revising the national hygienic standard of fermented wine, which will limit the formaldehyde content. Some manufacturers have also begun to stop using formaldehyde technology, which should be encouraged. Considering food safety and the interests of manufacturers, beer enterprises should also start with the research of production technology as soon as possible, and gradually replace modern technology with safer technology to prevent sudden "ban" from being caught off guard. This is also a new measure to adapt to the integration of domestic beer into the international beer industry after China's accession to the WTO.