Determination of low-level (sub-microgram) sulfur concentrations by isotope dilution multi-collector inductively couple plasma mass spectrometry using a 33S spike and internal norm... von Mann, Jacqueline L., Vocke Jr, Robert D., Kelly, W. Robert

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Revised delta34S reference values for IAEA sulfur isotope reference materials S-2 and S-3 von Mann, Jacqueline L, Vocke, Jr, Robert D, Kelly, W Robert

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A closed system digestion and purification procedure for the accurate assay of chlorine in fossil fuels von Howard, Maury E., Vocke, Jr, Robert D.

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Final report on key comparison CCQM-K35: Determination of sulfur in diesel fuel von Kelly, W Robert, Jr, Robert D Vocke, Mann, Jacqueline L, Turk, Gregory C

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Preparation and Characterization of a Suite of Ephedra-Containing Standard Reference Materials von Sharpless, K.E, Anderson, D.L, Betz, J.M, Butler, T.A, Capar, S.G, Cheng, J, Fraser, C.A, Gardner, G, Gay, M.L, Howell, D.W

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Revised δ34S reference values for IAEA sulfur isotope reference materials S-2 and S-3 von Mann, Jacqueline L., Vocke Jr, Robert D., Kelly, W. Robert

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Comment on "Determination of total sulfur at microgram-per-gram levels in geological materials by oxidation of sulfur into sulfate with in situ generation of bromine using isotope... von Kelly, W Robert, Vocke, Jr, Robert D, Mann, Jacqueline L

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Rare earth element mobility in the Roffna Gneiss, Switzerland von VOCKE, R. D. jr, HANSON, G. N, GRÜNENFELDER, M

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Determination of Sulfur in Fossil Fuels by Isotope Dilution Thermal Ionization Mass Spectrometry von Kelly, W. Robert, Paulsen, Paul J, Murphy, Karen E, Vocke, Robert D, Chen, Le-Tian

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Chemistry of Proterozoic orogenic processes at a continental margin in northern Sweden von Skiöld, Torbjörn, Öhlander, Björn, Vocke, Robert D., Hamilton, P.Joseph

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