Hi John,

I don't know how this would affect either material but how about liquid nitrogen?    I would think the resin would fracture while the bone would remain intact, plus it would be easy enough to run a test.

Bruce

On Thu, Jan 26, 2017 at 2:04 PM, John Dudgeon <[log in to unmask]> wrote:
I am trying to determine the most conservative method for removing an acrylic copolymer dispersion resin, called ACRYSOL WS-24 which has been previously sprayed or dipped on archaeological bone specimens, prior to preparation for isotope, protein and DNA extraction. Has anyone prepared bone specimens previously coated in ACRYSOL and if so, what methods were used to remove the polymer without undue alteration of the bone matrix? Acetone is one solvent that has previously been described (J. Field Archaeology, 1995) as well as unspecified alkaline aqueous preparations (Dow Chemical Technical Data Sheet), but I wanted to see if anyone had successfully used a strategy that was not unduly deleterious to endogenous organic molecules. I imagine the presence of the polymer would affect SI determinations, but have not as yet confirmed this from a chemical formulation.

Sincerely,
John


--
John V. Dudgeon, Ph.D.
Associate Professor, Department of Anthropology
Director, Center for Archaeology, Materials and Applied Spectroscopy (CAMAS)
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