Myth about "bottled water in the car can cause cancer": A mother with breast cancer was told by a doctor that women really shouldn't drink bottled water left in the car. When heat meets plastic bottles, it will produce chemicals, which will cause people to get breast cancer. This myth comes from people's concerns about plasticizers in bottles. So, what is the truth?

Experiment: 10 brand bottled waterwheel for one week.

I bought 10 brand bottled water from Carrefour supermarket in Shijingshan district, Beijing at 00. Two bottles of each kind, 1 bottle, are exposed to the sun under the front windshield of the car, and the temperature is measured with a special thermometer every two hours. The highest temperature in the car reaches 74.6 degrees. In addition, put the 1 bottle in a room at normal temperature, and do not expose to the sun.

0 After the experiment, the exposed 10 bottle of water in the car and the unexposed 10 bottle of water of the same brand and batch in the room were entrusted to the Comprehensive Testing Center of China Academy of Inspection and Quarantine for comparative testing. 18 plasticizer and the total number of colonies in water are strictly detected.

Results: No plasticizer was detected, and the total number of colonies was qualified.

00, no matter whether it is exposed or not, no dioctyl phthalate (DEHP) and other 18 possibly carcinogenic plasticizers were detected in bottled water samples.

00. At the same time, the total number of bacterial colonies in bottled water of brand 10 placed in the car and indoors is not more than 3cfu/mL at most, which is within the acceptable range, far less than 20cfu/mL stipulated in GB 17324-2003 Hygienic Standard for Drinking Pure Water in Bottles (Barrels).

00 in sunny days, the highest temperature at the windshield of the car can reach about 70℃. The temperature is slightly lower on cloudy days, and the highest temperature is around 50℃. During the test, the highest temperature in the car reached 74.6℃. All the bottles exposed to the sun in the car have been deformed, and the bottle caps of Robust are still leaking.

Professor Jiang from the School of Chemistry and Materials Engineering of Jiangnan University said that bottled PET generally does not add plasticizer, which is determined by the manufacturing process of PET. The stability of PET is determined by the polymerization degree of the material. Generally speaking, when the temperature is lower than 120℃, the PET material is very safe.

Except for PET, plasticizers will not be added to plastics such as PP and PE that are often used in daily life.