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Subject: Re: [DCHAS-L] Examples of Control banding and Chemical Safety Levels
Date: Wednesday, May 4, 2016 9:28:59 AM
Author: "Stuart, Ralph" <Ralph.Stuart**At_Symbol_Here**keene.edu> 		Next by Date:
Subject: [DCHAS-L] Hydrogen safety webinar?
Date: Wed, 4 May 2016 13:53:48 +0000
Author: "Reinhardt, Peter"

From: "Secretary, ACS Division of Chemical Health and Safety" <secretary**At_Symbol_Here**DCHAS.ORG>
Subject: [DCHAS-L] Case study on risk evaluation of printed electronics using nanosilver ink
Date: Wed, 4 May 2016 09:50:59 -0400
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 717E8B21-5301-4E48-B5FE-38BC83BAF648**At_Symbol_Here**dchas.org


An article of potential interest to the safety community.

- Ralph

https://urldefense.proofpoint.com/v2/url?u=http-3A__nanoconvergencejournal.springeropen.com_articles_10.1186_s40580-2D016-2D0065-2Dy&d=DQIFaQ&c=lb62iw4YL4RFalcE2hQUQealT9-RXrryqt9KZX2qu2s&r=meWM1Buqv4IQ27AlK1OJRjcQl09S1Zta6YXKalY_Io0&m=LpVoVCyo7jRPOCRaV05RtiSx_e1apMqQkbB90bxC3VY&s=L_jmd4W1fyRljVOCaMGyfG5Q9YC7ivj85y1bpcv3wk8&e=

Case study on risk evaluation of printed electronics using nanosilver ink
‰?¢ Ellen Kim,
‰?¢ Ji Hyun Lee,
‰?¢ Jin Kwon Kim,
‰?¢ Gun Ho Lee,
‰?¢ Kangho Ahn,
‰?¢ Jung Duck Park and
‰?¢ Il Je YuEmail author

Background

With the ever-increasing development of nanotechnology, our society is being surrounded by possible risks related to exposure to manufactured nanomaterials. The consumer market already includes many products that contain silver nanoparticles (AgNPs), including various household products, such as yoga mats, cutting boards, running shirts, and socks. There is a growing concern over the release of AgNPs in workplaces related to the manufacture and application of nanomaterials.

Objective

This study investigated the release of AgNPs during the operation of a printed electronics printer.

Methods

Using an exposure simulation chamber, a nanoparticle collector, scanning mobility particle sizer (SMPS), condensation particle counter (CPC), dust monitor, and mixed cellulose ester (MCE) filters are all connected to measure the AgNP exposure levels when operating a printed electronics printer.

Results

A very small amount of AgNPs was released during the operation of the printed electronics printer, and the number of AgNPs inside the exposure simulation chamber was lower than that outside background. In addition, when evaluating the potential risks for consumers and workers using a margin of exposure (MOE) approach and target MOE of 1000, the operational results far exceeded the target MOE in this simulation study and in a previous workplace exposure study.

Conclusion

The overall results indicate a no-risk concern level in the case of printed electronics using nanosilver ink.

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