IUPAC

International Union of Pure and Applied Chemistry

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Last update: 12 August 2008

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Member

Dr. John Karl Böhlke

Company:	U.S. Geological Survey
Department:	431 National Center
Address:	12201 Sunrise Valley Drive Reston, VA 20192
Country:	United States
Phone:	+1 703-648-6325
Fax:	+1 703-648-5274
Email:	jkbohlke@usgs.gov

Body membership

Subcommittee on Isotopic Abundance Measurements (Member)

Task group membership

member: Project No. 2007-038-3-200: Development of an isotopic periodic table for the educational community
member: Project No. 2007-028-1-200: Evaluated published isotope ratio data (2007-2009)
member: Project No. 2006-025-1-200: Assessment of fundamental understanding of isotopic abundances and atomic weights of the chemical elements
member: Project No. 2005-027-1-200: Evaluated published isotope ratio data (2005-2007)
member: Project No. 2005-022-1-200: Calibration of organic and inorganic oxygen-bearing isotopic reference materials
member: Project No. 2003-033-1-200: Determination of atomic weights using new analytical techniques
member: Project No. 2003-031-2-200: Isotopic compositions of selected elements
member: Project No. 2002-049-2-200: A new comprehensive report on the isotopic compositions of the elements for global user communities
member: Project No. 2001-019-2-200: Guidelines for mass spectrometric isotope ratio measurements
member: Project No. 1999-043-1-200: Element by Element Review of Atomic Weights to the Year 2000