The beginning of the new school year was the most intensive in the distribution of new books for schoolchildren. Earlier, a video entitled “father's examination of daughter's books, found to contain carcinogenic substances” had been transmitted frequently in many small areas of shenzhen, thus giving rise to much debate。
The video was presented by the founder of the hangzhou “daddy assessment” and expert in international chemical regulation wei weinbard, who sent seven samples to the national safety testing centre at his own expense, on suspicion that the plastic bags used by her daughter were free. The results showed that all seven samples contained phenylenediate (commonly known as “plasticizer”) - a toxic substance that affected both reproductive children and pregnant women - three of which also detected polycyclic aromatic hydrocarbons - an internationally recognized strong carcinogen。
So, what is the quality of the plastic packs, also widely used in shenzhen student groups? In recent days, journalists from the southern daily news have been conducting surveys on a random basis in areas with relatively dense schools, such as fukuda, lok, namshan, boan, yonggang and longhua, and jointly with the shenzhen city institute for quality measurement and testing (ronghua base), nine brands were inspected for 14 book skin samples. The results showed that of the 14 test samples, 1 tested with phthalate and 4 tested with polycyclic aromatic hydrocarbons did not exceed the standard limit and were eligible products。
Journalists ' investigations
Some of the self-taught tests proved that there was no product
According to a reporter survey, plastic bags are branded more frequently, such as zhuang birds, angels, bears, shells, yoshio, morning lights, powerful, golden hua, etc., most of which contain information on producers, production addresses, mailboxes, etc., but some have nothing other than a brand name, and in the dragon zone there are individual stationery shops, which sell only transparent film and no product information。
Most of the bags are classified as “self-adhesive” and “package (packaging)” at a price of $0. 5-3 per zone; when the material is mostly of a pp material and also of a cpp material, the sense is mostly smooth, and it is difficult for the naked eye to discern any quality problems, and when the packaging is dismantled, it can smell or stale or dim。
Among them, a test report with the words “the product meets national standards through the national educational and educational materials quality monitoring and inspection centre” appeared on the bookboards with a high market occupancy rate, stating that “the eu standard reach environmental tests have been adopted and all materials have been tested for quality as a qualified product and are not toxic and harmless”。
Good stockings also claim to meet the requirements of gb 21027 general requirements for the safety of student supplies, hj 572 technical requirements for environmental signing products, stationery; and the outer packaging of small angel packs carries the word “qualified certificate”。
"we can't really tell which is toxic or which is not." according to the owner of the ratware shop near the kiulong primary school in fukuda district, in the industry, there is a difference between one-time and the second-time material, which is relatively small and safer; the second-time material is used for recycling and reprocessing plastics, which are easily toxic。
The owner of the yabu mini-mart in the vicinity of the poo-puen primary school in poo-pouan district also admitted that the quality of the book-skin by different suppliers was sometimes much lower, and that some were very thin, “which often did not dare to buy”。
The use of plastic bags is almost 100%
Even sold out in the school year
How's the market for plastic bags? The stationary shopkeepers interviewed by the journalists indicated that every school season, students were rushing to buy bags of paper and even sold out. “papers or paper bags are prone to decay and new ones will have to be replaced in a few weeks, and plastic wraps are simple, durable and durable. One of the parents of the academy for the experiment of fitch in the dragon zone stated that he had not considered the safety of book cover。
In the southern mountains, journalists surveyed students in the fourth and sixth grades of the primary school through teachers at the primary school, and found that almost 100 per cent of the plastic bags were used and were purchased through the school-side stationery store, where large textbooks were more in the ppp suite and small textbooks were more in the sticky form. The teacher said: “although the school has never made a clear requirement for the bag, the plastic bag is generally accepted by students and parents because it is cheap and useful and the packaging process saves time”
In the survey, only one student's bag is packed manually by the parents. The student indicated that his parents had been concerned about the safety of plastic bags and that they were extremely cautious about such products and preferred to spend time with paper bags。
Results
Five out of 14 samples detected plasticizers or carcinogens, but none exceeded the standard
Following the completion of field sampling in area six, southern daily news journalists contacted the shenzhen institute for measurement and quality testing (ronghua base) to inspect a total of 14 book-skin samples of nine brands, mainly for phenylenediate (commonly known as “plasticizer”) and polycyclic aromatic hydrocarbons (with carcinogenic properties)。
In accordance with the national environmental protection standard of the people's republic of china, hj 572-2010, technical requirements for environmental marking products, stationery (china environmental protection industry standard), the court found that of 14 samples, 1 sample had detected the presence of phthalate and 4 samples had detected the presence of polycyclic aromatic hydrocarbons, but none had exceeded the standard limit and were eligible products。
Most of the plasticizers and polycyclic aromatic hydrocarbons detected were self-adhesive packs
Why do the main tests of phthalate and polycyclic aromatic hydrocarbons take place? The court explained that, in view of the fact that many of the books sold on the market were plastics, that plastics were highly melting and difficult to process, plasticizers had to be added to make them more plastic. Nephthalate, on the other hand, is the most widely used, performing and cheapest plasticizer, but also carcinogenic, teratogenic and reproductive。
Polycyclic aromatic hydrocarbons are often found in petrochemical products such as plastics, rubber, demodels, with specific polycyclic aromatic hydrocarbons being 16 substances such as beryllium, flue, fluorescent, which is the most toxic of polycyclic aromatic hydrocarbons。
According to the results of the tests, the only one of the 14 samples in which phthalate was detected was a khaki sticky bag with a content of 0. 011 per cent, purchased at bottung stationery in nansan peach primary school。
Four samples of polycyclic aromatic aromatic hydrocarbons were found to be: hardweight stationery of self-adhesive cpp materials, with 0. 62 mg/kg levels, purchased at the ronghua secondary school, in fukuda district, by the ratware store; sauerkrats of platinum-coated carcasses, with 0. 24 mg/kg levels, purchased at the sunlight house, in longhua district, with 0. 24 mg/kg levels; small angel stick-cords, with 0. 58 mg/kg levels, with 0. 33 mg/kg levels, with 2. 0 mg/kg fluorescent content, 1. 3 mg/kg levels, with 0. 33 mg/kg levels, with cedar-cords skin, with 0. 67 mg/kg levels, and 0. 33 mg/kg levels, purchased at the pao an。
“as can be seen, samples containing phthalate and polycyclic aromatic hydrocarbons have been detected mostly in self-adhesive bags. Wang xin, a senior engineer at the chemical product testing facility at the compound, said:。
It's safer to choose pe or pp material
The detection of phthalate and polycyclic aromatic hydrocarbons means that the product is not eligible? According to the agency's technical requirements for environmental signing products, the hazardous substances in plastic products are mainly phthalate and polycyclic aromatic hydrocarbons, and restrictions are imposed on 6 phthalate and 17 polycyclic aromatic hydrocarbons。
Of these, the sum of d2(2-ethyl) ethyl(dehp), dbp, bbp should not exceed 0. 1%, dinp, ddip and dnop should not exceed 0. 1%. Of the polycyclic aromatic hydrocarbons, specific polycyclic aromatic hydrocarbons may not exceed 10 mg/kg, and benzopylene (bap) may not exceed 1 mg/kg。
In accordance with this limit, none of the five packs of paper samples that detected hazardous substances above the standard limit were eligible products. However, wang xintan said: “although not exceeding the standard, the long-term exposure of the human body to these substances and whether toxic substances will have an impact on human health through skin penetration will require further study.”
It is worth noting that this test, which is actually being tested at relatively strict standards, and the general requirements for the safety of student supplies of gb21027-2007, which are mandatory national standards, do not restrict the use of phthalate and polycyclic aromatic hydrocarbons in stationery, but only the maximum amount of transportable elements, the content of organic solvents in coating products, and the limits for hazardous substances in adhesives。
In this context, wang xin cautions that there are currently three main types of material on the market: polyvinyl chloride (pvc), polyethylene (pe) and polypropylene (pp), which are more environmentally friendly and almost harmless to humans, but at relatively higher cost. “the citizens may choose the skins to be purchased on the basis of the material indicated behind the coats.” wang xin said。
Sectoral action
Shenzhen commission: a comprehensive comparative test will be conducted on shenzhen books
As the southern daily news reporter investigated the quality of the shenzhen bag, the shenzhen city consumers committee also took note of the popular discussions and received a number of suggestions from consumers and 315 volunteers for testing, and is currently issuing an official micro-letter to shenzhen's citizens on a “call order” for the collection of samples of the bag, at which time the united fukuda district extermination commission and the booan district expedition commission will entrust shenzhen city institute for quality consumption with conducting a comparative test of the bag skin。
“we will use the combination of eu standards and national standard standards to test the chemical safety of the school coatings and select safe paper for the children.” the staff member of the shenzhen city extremist council introduced that each year the committee conducted a comparative test of the quality of some of the hot spots on the market and that the problem would be followed up。
It is also noteworthy that, at the end of last month, the general directorate of state markets issued the 2019 programme of action for the safe care of children and student supplies, which focuses on children's toys, school stationery, school uniforms, school runway raw materials and other products, and on ongoing monitoring and inspection and specialized rehabilitation. Of these, the presence of chemical hazards such as plasticizers and transportable elements over-standards in products is a priority。
Planning and integration: gan sheming, fong ray, zhang zhang zhen
