Re: titanium dioxide(ti02) and its disinfecting quality- true or false?

[Guest guest]

,

TiO2 is most commonly used as the white pigment in expensive paints.

Because it is GRAS (generally recognized as safe), it is also mixed with the

powdered sugar that is sprinkled onto packaged donuts.

The TiO2 keeps the powder white because powdered sugar gets saturated with

oil from the donuut and the powder turns gray. TiO2 stays white even if wet

with oil (because it has a higher index of refraction!); it is used in other

foods as well to make them white.

" APPLICATION OF THE PHOTOCATALYTIC CHEMISTRY OF TITANIUM DIOXIDE TO

DISINFECTION AND THE KILLING OF CANCER CELLS " is a paper at:

http://www.nrel.gov/vehiclesandfuels/ancillary_loads/pdfs/cancer_cells.pdf

entitled:

(Google: UV, titanium dioxide, catalyst)

Unfoturnately, I cannot think of any circumstances under which such

chemistry could be useful to anyone suffering from any illness.

The UV needed to activate the catalyst is damaging.

There are devices out there that use this technology to eliminate VOC's in

the air but the applications (actual consumer devices) are nothing more than

toys.

The technology works in the lab with very high UV flux, lots of catalyst

surface area and low air flow rates but the consumer devices have inadequate

surface area, low UV flux and high air flows.

Save your money and forget about TiO2 gimmicks; and don't eat packaged,

sugared donuts to get the TiO2 because not enough UV will penetrate your

stomach.

C. May, M.A., CIAQP

May Indoor Air Investigations LLC

3 Tolkien Lane

Tyngsborough, MA 01879

617-354-1055

www.mayindoorair.com

www.myhouseiskillingme.com

> 19. titanium dioxide(ti02) and its disinfecting quality- true or false?

> From: jason ng

>

> 19. titanium dioxide(ti02) and its disinfecting quality- true or false?

> Posted by: " jason ng " artformjon@... bigbroco88

> Date: Fri Nov 30, 2007 4:53 pm ((PST))

>

> Ive been hearing a lot of good things about ti02. it is an all-cure

> product that prevents mold build-up, sick building syndrome,etc with

> just the sun as its catalyst.its already being used in public places

> like their subways and hospitals in japan.

>

> i hope someone here can attest or contest their claim.

>

> also, if theres a product out in the market already please send me

> their brand names. thanks

>