Little boy Lang, backpack to school. The bag contains "toxin", listen to the heart panic.

Reporter recently learned in many places, now some of the plastic bags carried by primary and secondary school students, there is a risk of exposure to toxic and dangerous chemicals short-chain chlorinated paraffin, and the national standard for school bags does not limit the content of short-chain chlorinated paraffin, resulting in a large number of "toxic school bags" and children "dancing".

Chlorinated paraffin is often used as a plasticizer added to plastic materials, can increase the flexibility of plastic materials, easy to shape and improve the softness of the touch, by creating a better bag appearance and feel to attract consumers. Chlorinated paraffin can be divided into short chain, medium chain and long chain according to the length of the carbon chain, of which short chain, medium chain chlorinated paraffin has a certain biological toxicity, usually the shorter the carbon chain, the stronger the toxicity.

Shenzhen Institute of Measurement and Quality Testing on the market circulation of 82 batches of student bag samples were tested, 42 batches were detected short-chain chlorinated paraffins, the content range is 0.007%-9.5%, the detection rate is 51%; Among them, the content of SCCPS in 25 batches of samples exceeded the requirements of the relevant regulations of the European Union, and the non-conformity rate was 30%.

Engineer Feng Anhong of Shenzhen Institute of Metrology and Quality Testing believes that schoolbags are accompanied by students' entire reading era, students will contact schoolbags almost every day, and even sleep with schoolbags during lunch breaks. It can be seen from the research data that there is a risk of exposure of short-chain chlorinated paraffin in the schoolbag, and toxic substances may enter the human body through respiratory tract and other ways, and then cause damage to the health of students.

SCCPS also appear on plastic book covers. A 2019 test by the Shenzhen Consumer Council showed that six plastic book cover samples were found to contain SCCPS, five of which exceeded the EU standard limit.

The former State Administration of Safety and other 10 departments published the "Catalogue of dangerous chemicals" included short-chain chlorinated paraffins, and its risk category was set as "carcinogenic category 2, harm to the aquatic environment - acute hazard category 1, harm to the aquatic environment - long-term hazard category 1", indicating that this is a suspected cause of cancer, and high toxicity to aquatic organisms. And has a long-term lasting effect of the substance.

The List of Toxic Chemicals Strictly Restricted in China published by the former Ministry of Environmental Protection, the Ministry of Commerce and the General Administration of Customs lists chemicals that harm health and the environment through environmental accumulation, bioaccumulation, biotransformation or chemical reaction after entering the environment, or through exposure to serious hazards and potential dangers to human body. SCCPS are listed in the list. The permitted use is: industrial use.

Shenzhen Consumer Council released the test report pointed out that short-chain chlorinated paraffin is biotoxic and accumulative, long-term existence in the environment of short-chain chlorinated paraffin will accumulate in animals and humans, affect the human body and biological immune system and reproductive system, and cause environmental pollution.

Zhu Yi, associate professor of China Agricultural University, pointed out that the SCCPS attached to the schoolbag will slowly volatilize at room temperature, but it is difficult to degrade, and it will migrate far in the atmospheric environment.

Experts suggest that relevant departments should incorporate SCCPS into the supervision, establish detection methods for SCCPS in consumer goods such as school bags, improve the relevant standard system, and provide technical support for the supervision of SCCPS in consumer goods.

In addition, experts suggest that consumers try to buy school bags, book covers and other stationery through regular channels. Ask for invoices after purchase and retain shopping vouchers, so that they can effectively safeguard their legitimate rights and interests after problems arise.

SGS China light industrial products laboratory staff Li Liolie said that in the long run, should encourage, guide chemical enterprises to optimize the process flow, reduce the upstream chlorinated paraffin products contained in the short-chain chlorinated paraffin, as far as possible from the source to eliminate the end product of the substance exceeded the risk. At the same time, it is also necessary to encourage the chemical and material industry to strengthen research and development and innovation, develop a better price and more powerful polymer processing AIDS, and speed up the replacement of chlorinated paraffin.

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