Title: direct exposure probe
Long Title: IUPAC Gold Book - direct exposure probe
DOI: 10.1351/goldbook.12391
Status: current

Definition
Device based on a modification of a direct insertion probe for exposing an involatile sample directly to the electron beam (in an electron ionization source) or to a chemical ionization plasma as in desorption chemical ionization.

Note
The sample can be deposited on an inert surface or on a heater filament for rapid heating.

Related Terms
- desorption chemical ionization: https://goldbook.iupac.org//terms/view/12385
- direct insertion probe: https://goldbook.iupac.org//terms/view/12393

Source
- PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1537 (https://doi.org/10.1351/PAC-REC-06-04-06)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/12391/html
- json: https://goldbook.iupac.org/terms/view/12391/json
- xml: https://goldbook.iupac.org/terms/view/12391/xml

Citation: Citation: 'direct exposure probe' 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.12391
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: 2025-11-01T08:33:43+00:00