Publication - Journal Article Mass Spectrometric Determination of Uranium and Thorium in High Radiopurity Polymers Using Ultra Low Background Electroformed Copper Crucibles for Dry Ashing DOI https://doi.org/10.1021/acs.analchem.6b04854 Journal Article Analytical Chemistry, vol. 89, iss. 5, pp. 3101-3107, 2017 Authors Isaac J. Arnquist, Eric J. Hoppe, Mary Bliss, Jay W. Grate Language English