Use the radiation dose calculator to estimate your yearly dose from sources of ionizing radiation.
Chinese granite radiation.
At issue is whether some granite countertops emit dangerous levels of radiation especially the gas radon which is the second leading cause of lung cancer after smoking.
Some unconfirmed sources state that china export granite with high radiation activity at a cheap price tag to the rest of the world.
Sources depict that granite from china is unfit.
Most of the chinese granite recorded the radiation level of 100 millirems that is enough to cause major health issue in humans if they will be exposed to such granite stones.
If you buy it from india it came from brazil.
The epa says that approximately one of every 15 homes throughout the country whether new or old has elevated radon levels.
So the idea of it having more radiation because chinese stones have more radiation is silly.
Chinese granite emits a high level of radiation as its radioactive isotopes contain radium and potassium residues.
Due to my concern about the radiation that granite emits i decided to pursue quartz countertops.
It is extremely unlikely that radiation from granite countertops would increase annual radiation doses above normal natural background levels.
If you import it from china it came from brazil.
Recommends taking action if radon gas levels in the home exceeds 4 picocuries per liter of air a measure of radioactive emission.
Ok so the risk from granite is minuscule but how common is radon in u s.
On checking with some of the quartz countertop companies i was informed that quartz does contain some radioactive materials.
It releases more radiation than a normal range.
Radon that originates in the soil is the main cause of radon problems the epa says.
According to the chinese newspaper global times about 80 percent of shanghai s newer homes and offices using local granite have been found to contain excessive amounts of radiation which is defined as anything over 0 13 micro sieverts per hour.
However any radiation present would decrease quickly with increasing distance from the source.
Granite that originates from china is going to have more radiation but stones from low radiation areas are not being storied in nuclear waste facilities in.
About the same risk for cancer as smoking a half a.
The chinese granite as most popular natural stone material that play important role at the market.
