Note: the phone shell also released formaldehyde

Folklore, mobile phone shell is also carcinogenic. For the problem of authenticity, CCTV channel of Finance and economics "is really" the column group, once invited building environmental monitoring center of Tsinghua University experimental personnel, professional experiments are carried out.
The program group respectively from the stall and shopping malls buy plastic, rubber, leather three common mobile phone shell; we will be the mobile phone shell sent to Tsinghua University building environmental monitoring center of the indoor air testing room of Xi'an formaldehyde detection.
Test: in the use of mobile phones in 1 small time, the phone shell temperature of up to 45 degrees Celsius
Program group to find 6 enthusiastic people, please use them in accordance with the usual usual way, call, brush micro-blog, play games...... Test the normal use of mobile phones, mobile phone shell temperature can reach much higher. 1 hours later, the program group with an infrared temperature tester, test the maximum temperature of each phone, the maximum temperature of 6 mobile phone shell temperature of 39.3 degrees -48.4 degrees, the average temperature is estimated to.
Test: when the cell phone shell temperature reached 45 degrees Celsius, the release of benzene and formaldehyde and other harmful substances;
The experimental cabin temperature is heated to 45 degrees, and then put into the phone shell, 1 hours after the 6 mobile phone shell is heated to release the gas collection is completed. Subsequently, the experimental part of the gas for benzene, formaldehyde content analysis. 6 mobile phone shell, regardless of is in the mobile vendors or at the mall to buy mobile phone shell, release the carcinogens benzene, release between cubic meters of cubic meters of the 0.0191mg/ -0.0494mg/. National air quality standards for benzene concentration limit provisions are 0.011mg/ cubic meters and the phone shell closed heated for 1 hour, so that the benzene release to be higher than the routine use of, based on this reason, mobile phone shell of benzene release amount is not large. However, the stall to buy plastic mobile phone shell benzene release more high, is 0.0494 mg / cubic meters, and the mall to buy Leather mobile phone shell benzene release is 0.0191 mg / cubic meter.
In addition, there are 4 mobile phone shell formaldehyde. Experiment with the same way detection, two silicone mobile phone shell, two leather material on the mobile phone shell formaldehyde to release a quantity is higher than that of the indoor air quality standards in the provisions of 0.1mg / m3,. The formaldehyde release quantity highest leather material, even to 0.25mg/ cubic meters, is more than twice the value of national standard of indoor air.
Benzene and formaldehyde is a WHO identified carcinogens, are volatile organic compounds, will be released from the phone shell. Benzene on the human body injury is relatively large, the state has adopted the use of regulatory measures to limit the benzene, many with benzene homologues to replace benzene as organic solvent, if the purity of these organic solvents is not high, then one may contain a certain amount of benzene. The formaldehyde may be derived from the use of the cell phone shell adhesive, it may also be used in silicone shell material is not stable enough to distribute.
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