Date: Wed, 18 Nov 2009 15:27:41 -0500
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: Latex degradation, low humidity, Chinese drywall?
Rubber degradation really
leaps off the page and suggests ozone. The symptoms are also
consistent with ozone (as well as other chemicals such as
formaldehyde...then again, chemophobia, as well). Electronics such
as laser printers and photocopiers emit a lot of ozone. I presume you
aren't using "ozone air purifiers" (an oxymoronic device if there ever
was one) or other sort of electrostatic air cleaner.
If your facility is new, it could be outgassing from
furniture, carpets, or drapes.
Drywall would be
a very long shot - you'd have metal corrosion issues, first of all.
And second, drywall imports from China only occurred on large
scale after Katrina with the peak period 2004-2007. How old is the
building? If you really want to rule it out, you can cut out a
section and see if it says "Made in China" or has the name of a Chinese
company printed on the back.
On Nov 18, 2009, at 2:35 PM, Debbie M.
Please excuse the
I=92m working with a group that works in a secured, containment
facility. The supply air is one pass, the exhaust is HEPA filtered
and air change rates are in the 10-15 ACH. Rubber bands, latex
gloves, the gloves on a glove box, rubber stoppers, etc. degrade very
quickly in this building - a matter of months. This causes
consternation among my building occupants - =93if latex degrades so
quickly, what is this building doing to me?=94
I have done the following:
datalogged temperature, %RH, CO and CO2 twice, at different times
of year, for a week. First set showed extremely low humidity -
below 20%rh - all other measurements within customary. Second
round showed %rh in a more normal range - 35-40%rh. Magnetic
fields were at or below background. No radioactivity was
detected. The building doesn=92t have any weird smells, evidence
of mold or water intrusion. The mechanical system is working as
designed, filters in place and without high pressure drop, coils clean,
etc., according to my building engineers.
People complain of headaches and
stuffy noses, general malaise after working in the building for some
period of time. Someone has suggested Chinese drywall might be a
culprit but I don=92t know as it quite fits.
Whaddya think? All ideas
welcome, at this point.
Debbie M. Decker, Campus Chemical Safety Officer
Health and Safety
University of California, Davis
Davis, CA 95616
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