1, building ceramics (tiles, washbasins and flush toilets)
Mainly by the clay, sand and gravel, slag or industrial waste and some natural additives and other materials molding glaze sintered. Due to the different geological history and formation conditions of these materials, more or less radioactive elements, such as thorium, radium, potassium and so on.
2, medical X-ray
Medical X-ray brings an average of 53 millirem of radiation per person per year. The third largest source of external radiation at 28 millirems is the food we eat, the clothes we wear, and even the paper of the magazines we hold in our hands-radiation that is naturally linked to trace amounts of unstable isotopes.
3. Smoke detectors
Cause 10 millirems of radiation per year. The contamination caused by nuclear experiments sounds scary, but it's actually less than 1 millirem of radiation per year (unless you happen to be standing right next to the experimental site). The average radiation from a nuclear power plant is just as small.
4. Television
Television also emits radiation, and although the dose of X-rays produced by the high-voltage power supply of a television set is weak, the dose cannot be ignored by those who have been watching television for years.
5, spinach
In some provinces and municipalities in the area of sampling tests, found that spinach, lettuce leaves on a trace of radioactive iodine-131, the Ministry of Environmental Protection published data show that there are traces of radioactive substances in the air iodine-131 exists. As the radioactive material in the air settles to the ground, it can contaminate vegetables grown in the open on the ground.
Expanded Information
There are three basic methods of radiation protection: time protection; distance prevention and expansion and shielding. It is worth noting that doctors use radiation devices to the patient diagnosis and treatment of disease, according to the actual needs of the patient, weighing the pros and cons, to achieve safe and reasonable use of radiation devices. And patiently persuade those who take the initiative to request but do not need to use the radiation device diagnosis and treatment of patients, to guide them out of the misunderstanding, is not necessarily the use of advanced medical equipment, in order to cure all diseases.
People's Daily Online - Is ceramic cleanliness radioactive?
China.com - life everywhere there is radiation (Figure)
Chinese People's **** and the country - Ministry of Health experts: spinach on the radioactive material is easy to wash off
Chinese People's **** and the People's Government of the State of China - alert to the life of the radiation