The Journal of the American Society for Mass Spectrometry, published by the American Chemical Society on behalf of the American Society for Mass Spectrometry, is a monthly, peer-reviewed journal that covers all aspects of mass spectrometry, including fields of scientific inquiry in which mass spectrometry can play a role, including both applications and fundamentals. These fields include the chemical, biological, health, environmental and forensic sciences, omics sciences such as proteomics and metabolomics, as well as physics and geology.