With the speaker's permission, I'd like to invite you to a lecture, "Topic in Museum Conservation: Sampling, Ambient Mass Spectrometry, and the Philosophy of Damage in a Museum Setting" by G. Asher Newsome, Physical Scientist, MCI. He has been able to analyze dyes and pigments with DART-MS using this method. He did a short presentation of this method at DHA41 last year.
Mary



Thursday, August 10, 2023, 10:30am Eastern Daylight Savings Time (USA)

Zoom Meeting Link: https://smithsonian.zoom.us/j/87327339225?pwd=ZmcyNktBb3dQcWIzWmJDdXk1YU9Idz09

 Meeting ID: 873 2733 9225   Passcode: 768672

Material analysis is needed to support all manner of research at the Smithsonian. However, it is often important to the museum and other interested parties that rare, precious, or culturally sensitive objects remain undamaged. Mass spectrometry in its various forms presents a powerful tool, but it is inescapably destructive at some level. As the sensitivity of modern instrumentation grows, the sample mass that must be collected and ionized shrinks, perhaps to the point where it becomes debatable whether the amount removed constitutes "damage". Ambient mass spectrometry methods offer particular opportunities for sensitive object analysis because they can theoretically be performed without cutting material from a whole or preparing the surface. I will present several recent projects that pertain to different forms of minimally invasive, ambient sampling from materials such as wood, parchment, textiles, and synthetics, among others. I will also show recently developed instrumentation methods that accommodate intact objects too large to fit immediately adjacent to the mass spectrometer.




For further information on this message, contact Ann N'Gadi, Museum Conservation Institution, 301-238-1224 (non-VoIP), [log in to unmask]<mailto:[log in to unmask]>

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