Home>Discussions>KITCHENS>Radon in Granite Countertops
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havanagranite
Re: Radon in Granite Countertops
Cathy499 wrote:

Actually, most urainium deposits were formed when the radioactive elements leached out of granite. Granite almost always has uranium elements, some more than others, as much as 7,000 times more in some cases. High sensitivity airborne gamma-ray spectrometry has been used since the mid-1970’s in support of geological mapping and mineral exploration

This study did a good job on explaining the risks.
http://http://www.geocities.com/jnrp2005/v2n103.pdf

Only one sample (Azoles Bahia) failed the sample, but the conclusions were eye opening. They recomended envioromental monitoring where granite mateials are used inside homes or anyplace that people had direct access to the material. The studies authors also warn of serious economic and social issues if the stone industry doesn't stop the practice of using different names for the same stone, as a simple mistake could result in a high radiation content granite being used inside a home.

Other studies have show as many as 25% of the tested samples failing to meet UN standards. Not safe standards, but UN standards. There is no safe level of radiation.

This site is a bit over the top, but their science is valid.

http://http://solidsurfacealliance.org/G-radioactivity-radon-issues.html

The info on the Chinese granites was interesting.

I'd get the granite tested if I were you to make sure it is one of the safer granites. There are plenty of them available.

yup thats why there are all kinds of warning lables on granite because it is so toxic, oh wait there isn't:rolleyes: everyone on the internet can post anything and claim expertise, I haven't seen any factual information proving radiation from counter tops. instead I have seen many experts make statements that these remarks were originating from products that are suffering decline as granite use increases.
the links didn't work but found their websites. it doesn't take very long reading to see the biased and false information. it would be easy to be fooled if you haven't done much research into these areas. and think about this a minute who would benefit if granite was found dangerous to use for counter tops? quartz surfaces and solid surfaces. both who are synthetic not natural products solid surfaces are basically a dense plastic and we all know that the manufacture of plastics has a negative impact, and quartz surfaces are quartz in an acrylic resin base. acrylic is also a form of plastic. also did you know that granite counter tops can be used in "green homes" because they have a low impact on the environment? not so with solid surfaces

canuk
Re: Radon in Granite Countertops

Geez ... is the sky falling again? :D

Cathy499
Re: Radon in Granite Countertops

Sorry about the links, try these

http://solidsurfacealliance.org

http://solidsurfacealliance.org/files/cyprus_study_on_granite.pdf

http://solidsurfacealliance.org/files/Egyptian_Radon_study_PDF.pdf

http://solidsurfacealliance.org/files/Saudia_Arabian_granite_study.pdf

http://solidsurfacealliance.org/files/granites.pdf

There you go, four scientific studies that prove beyond doubt that granite is radioactive, some of the studies call for enviromental monitoring if granite is used inside a home.

Can't get any clearer than that.

By the way, would not a granite shop benefit from covering up the information?

Have a nice day.

djohns
Re: Radon in Granite Countertops

Let's see , China , Saudi Arabia , Cyprus , etc . Do you have any studies from AMERICAN scientists ? Oh , I know . George Bush and Dick Cheney are covering it up so that their friends in the granite business can profit . Quick , somebody call Henry Waxman so they can have hearings ! We must get to the bottom of this before the elections !!!!

Cathy499
Re: Radon in Granite Countertops

Will Illinois do?
http://solidsurfacealliance.org/files/contamination_by_daughter_products_of_radon.pdf

Then here is one from Cornell University,

http://solidsurfacealliance.org/files/RadonHomeownersPerspective.pdf

Bottom of page three, it mentions granite counters adding to the Radon risk of the home.

Here is the site where all of these and more can be found

http://solidsurfacealliance.org/G-radioactivity-radon-issues.html

Yes, the site is definetly selling something and bashing granite, but as I said, their science holds up.

Cathy499
Re: Radon in Granite Countertops

DJohns,

Are you saying that these international experts are somehow suspect because they are not American?

I am a Geologist, oil feild work has been my feild of expertise. We have known for many decades that oil feild equipment can be contaminated from drilling and the oil. Face it, granite has radiation elements in it, from hundreds to thousands per parts per million.

Arguing in the face of evidence makes me wonder if your screen name should be Duh johns:)

djohns
Re: Radon in Granite Countertops

Hmmmmm ..... I see another goverment program looming .
A whole new class of victims is emerging . :eek:

" Duh Johns " ... That's pretty funny . Wish I had thought of that .

goldhiller
Re: Radon in Granite Countertops

........DW

djohns
Re: Radon in Granite Countertops
goldhiller wrote:

........DW

We'll see . :cool:

JLMCDANIEL
Re: Radon in Granite Countertops

From the United States Environmental Agency, a group not funded to produce a desired result.

"Radon is a naturally occurring radioactive gas produced by the breakdown of uranium in soil, rock, and water. Air pressure inside your home is usually lower than pressure in the soil around your home's foundation. Because of this difference in pressure, your house acts like a vacuum, drawing radon in through foundation cracks and other openings. Radon may also be present in well water and can be released into the air in your home when water is used for showering and other household uses. In most cases, radon entering the home through water is a small risk compared with radon entering your home from the soil. In a small number of homes, the building materials (e.g., granite and certain concrete products) can give off radon, although building materials [COLOR=red]rarely cause radon problems by themselves. In the United States, radon gas in soils is the principal source of elevated radon levels in homes." [/COLOR]

Or should we tear down all house built with anything mined and stop taking showers.
Jack

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