Abstract
It’s hard to imagine an analytical chemistry lab today without gas chromatography/mass spectrometry (GC/MS), the powerful and ubiquitous tool widely used by chemists to identify individual substances in a mixture. But before the mid-1950s, the combination of gas chromatography and mass spectrometry was not yet available. The invention of GC/MS by scientists at Dow Chemical in 1955 changed the course of history and was honored with a National Historic Chemical Landmark by the American Chemical Society during an event on June 8 in Midland, Michigan, the city in which Dow was founded and the birthplace of GC/MS. To recognize the significant contribution of this invention in the history of chemistry, ACS president Bonnie Charpentier presented a commemorative plaque to representatives from Dow. The event, held in conjunction with the 50th Central Regional Meeting of ACS, also in Midland, was hosted by the ACS Midland Section, which is celebrating its 100th
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