Title: transport region Long Title: IUPAC Gold Book - transport region DOI: 10.1351/goldbook.12603 Status: current Definition Region in a mass spectrometer in which an ion beam is transported from the ion source to the ion optics or from one ion optical element to the next. Related Term - ion optics: https://goldbook.iupac.org//terms/view/12444 Source - PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1598 (https://doi.org/10.1351/PAC-REC-06-04-06) Other Outputs - html: https://goldbook.iupac.org/terms/view/12603/html - json: https://goldbook.iupac.org/terms/view/12603/json - xml: https://goldbook.iupac.org/terms/view/12603/xml Citation: Citation: 'transport region' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.12603 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-07-16T10:05:11+00:00