Merger with Washington Chromatography Discussion Group

The Washington Chromatography Discussion Group is merging into the Washington-Baltimore Mass Spectrometry Discussion Group in 2023. You can read more about the Chromatography Group on the History page.

The Washington Chromatography Discussion Group (WCDG) began in the early 1960s as an informal group of gas chromatographers who gathered to exchange ideas related to separation science. In 1965, the group, comprised of distinguished scientists from government, academia, and industry, formally became known as the “Washington Area Gas Chromatography Discussion Group”. The first president was M. Beroza, and president-elect and program chairperson was I. Hornstein, both from the USDA. The group met once a month from September through June in several locations throughout the area to hear an invited speaker and share information. As the group gained popularity, its activities included seminars, dinners, short courses, and symposia. By 1970, HPLC had become a viable technique so the group’s name was changed to the more encompassing “Washington Chromatography Discussion Group.” The group’s meetings were held regularly at one location, the office of Hewlett-Packard in Rockville, Maryland, and instrument manufacturers began sponsoring a light dinner before each meeting. Meetings were later held at the U.S. Pharmacopeia in Rockville and then at the Institute for Bioscience and Biotechnology Research in Rockville.

December 15, 2008 WBMSDG Meeting

Speaker: Dr. Justin Hettick; CDC NIOSH in Morgantown

Topic: Discrimination of microorganisms by MALDI-TOF MS

Abstract: Unambiguous identification of microorganisms such as bacteria or fungi is essential for effective surveillance and treatment of disease.  Unfortunately, diagnosis by classical microbiological methods often requires lengthy culture procedures or subjective micro-and macroscopic evaluations.  To stem the spread of disease, rapid procedures for the accurate identification of microorganisms are necessary.  To that end, we have been developing mass spectrometry-based tools for the analysis of bacteria and fungi.

Matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry (TOF-MS) can be used to generate highly reproducible, characteristic “fingerprint” mass spectra.  These “fingerprint” mass spectra may be reduced to a subset of significant mass-to-charge values through statistical tools and compared against a reference library.  Using this technique, microorganisms can be easily identified at the species and strain level with error rates approaching zero.

Time: 7:30 pm

: Shimadzu Scientific Instruments, Inc. Training Center, 7100 Riverwood Drive, Columbia, MD 21046

: Shimadzu Scientific Instruments

2016 – 2017 Officers



Dr. Katherine (Katie) Fiedler
US FDA/Center for Food Safety and Applied Nutrition (CFSAN)
5100 Paint Branch Parkway
College Park, MD 20740
Phone: (240) 402-5055

Dr. Stefani Thomas
Johns Hopkins University School of Medicine
Department of Pathology, Division of Clinical Chemistry
Center for Biomarker Discovery and Translation
1550 Orleans St., CRBII Room 3M03
Baltimore, MD 21231
Phone: 410-955-7138

Website and Announcements:

Dr. G. Asher Newsome
ERP International, LLC
contractor to Department of Research Programs, Walter Reed National Military Medical Center
4650 Taylor Road
Bldg 17B, 4th floor, Room 4009
Bethesda, Maryland 20889-5638
Phone: 301-295-8293


Dr. Berk Oktem


Dr. Alexei Gapeev
Millis Scientific, Inc
6400 Baltimore National Pike #201
Baltimore MD 21228
Phone: 877-844-2635

About the WBMSDG

The Greater Washington-Baltimore Mass Spectrometry Discussion Group meets monthly from September through June to discuss various aspects of mass spectrometry.