Assuming a relatively tight house with an air change rate of 0 5 per hour h 1 and using average measured dose rates from granite countertop slabs the estimated radon concentration in kitchen air would be.
Is there radiation in granite countertops.
One of the things that many homeowners are concerned about is the issue of granite radiation.
However keep in mind that avoiding granite countertops does not mean you avoid radiation or radon gas emissions in your home.
Based on significant research from granite s around the world it is determined that there is a minimal and acceptable amount of radon in average granite building materials.
It is not likely that the radiation coming from the granite kitchen counters will increase the radiation doses above the normal natural background levels.
There are currently no regulations concerning granite countertops radon gas or radiation emissions.
It does pay to find out for sure if there are harmful levels of radioactive elements in your granite countertops.
The question is whether they do so at levels that can impact cancer risk.
Here are some frequently asked questions about radon and the risks associated with granite.
You can identify the levels presence and concentration of the radioactive elements found in your granite countertops.
Granite countertops and radiation a variety of materials may be used to make countertops including artificial materials quartz marble slate and granite.
Some granite countertops have been found to give off trace amounts of radon and reporters cited a few kitchens with radon levels as high as 25 times the epa s safety limit of 4 picocuries per liter of.
Granite has grown in popularity as building materials particularly for kitchen countertops because they are not only beautiful but also functional.
So are granite countertops a real risk.
Granite s durability and decorative appearance make it a popular building material in homes and buildings.
Identify the levels of radiation in granite countertops.
Granite countertops and radon gas science and technical committee of the american association of radon scientists and technologists aarst august 4 2008 2 pages.
After all there are always exceptions to the rule.
Over the past couple of decades however there have been reports that some granite countertops may be emitting dangerous amounts of radiation.
Radiation from granite countertops.
The lowdown on granite radiation.