Before mass analysis

{
  "id": "MLC-T-CHM-001173",
  "term": "Before mass analysis",
  "field": "Chemistry",
  "definition": "The total ion current measured before mass analysis: the combined current of all ions of one sign, usually positive, entering the instrument before they are separated by mass-to-charge ratio. It contrasts with the total ion current after mass analysis, which is the combined current of the separated ions that contribute to the recorded spectrum.",
  "subject": "Analytical Chemistry",
  "references": [
    "Orange Book, 2nd ed., p. 206 (https://media.iupac.org/publications/analytical_compendium/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/before-mass-analysis/"
}