Direct exposure probe

{
  "id": "MLC-T-CHM-003255",
  "term": "Direct exposure probe",
  "field": "Chemistry",
  "definition": "A modification of the direct insertion probe in which an involatile sample on the probe tip, often a heated wire loop, is placed directly in the electron beam of an electron ionization source or in the plasma of a chemical ionization source. Rapid heating desorbs the sample into the ionizing region, and this arrangement is the basis of desorption chemical ionization.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "desorption chemical ionization",
    "direct insertion probe"
  ],
  "references": [
    "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)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/direct-exposure-probe/"
}