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Rapid Communications in Mass Spectrometry : RCM|April 14, 2012
Determination of low-level (sub-microgram) sulfur concentrations by isotope dilution multi-collector inductively couple plasma mass spectrometry using a 33S spike and internal normalization for mass bias correctionJacqueline L Mann, Robert D Vocke, W Robert KellyRapid Communications in Mass Spectrometry : RCM|March 17, 2009
Revised delta34S reference values for IAEA sulfur isotope reference materials S-2 and S-3Jacqueline L Mann, Robert D Vocke, W Robert KellyJournal of AOAC International|January 18, 2007
Preparation and characterization of a suite of ephedra-containing standard reference materialsKatherine E Sharpless, David L Anderson, Joseph M Betz, et al.Pageof 1