From: James Duncan <jimandjoanneduncan**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Another Mask Question
Date: Tue, 24 Nov 2020 13:49:15 -0800
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: CAAFfSJRTGZf5MhCtYhvz1101T3Yk2YEyWJjtJznLQX=A-ih+0w**At_Symbol_Here**

This may not be of help, but just in case: Analysis of Chemical Off-Gassing from Filtering Facepiece Respirators after Decontamination (PREPRINT)

From Defense Technical Information Center:
Document Number: AFRL-RX-TY-TP-2009-4565

Jim Duncan, PhD

On Tue, Nov 24, 2020 at 1:25 PM Del A. Koch <dkoch**At_Symbol_Here**> wrote:

I have a safety-related question regarding disposable surgical masks. I am hoping that someone in the group might have some insight into my query.

Our laboratory has done some very preliminary off-gassing analysis for a particular brand of disposable surgical mask and we have generated some interesting results. In order to better plan some more definitive testing, I attempted to search the literature to learn more about the analysis of masks for inhalable components. The only references I was able to find were either oriented toward the analysis of residual compounds following disinfection procedures (such as ethylene oxide, to give an example), or involved skin irritation (formaldehyde). I did not find anything which studied possible inhalation of volatile components which might be present in masks as part of the manufacturing process.

While I am not a safety professional (I work in the area of analytical chemistry), it seemed to me very odd not to find anything on this topic (possibly my searching was not sufficiently thorough?). Is anyone in this group aware of any testing (or even a concern) around the potential inhalation of volatile compounds from a surgical mask which is being worn for most of the day?

I would be most grateful for any responses, thank you!

Del A. Koch

Senior Scientist

Inovatia Laboratories, LLC

120 East Davis Street | P.O. Box 30 | Fayette, MO 65248-0030

p: 660-248-1911 | f: 660-248-1921

When You Want Innovation, THINK INOVATIA =AE

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