TABLE 1.
Summary of techniques covered throughout this review
| Technique | Abbreviations | Classifications |
|---|---|---|
| Air flow‐assisted desorption electrospray ionization | AFADESI | Liquid extraction |
| Atmospheric pressure chemical ionization | APCI | Plasma |
| Atmospheric pressure solids analysis probe | ASAP | Plasma |
| Coated blade spray | CBS | Liquid extraction |
| Cone spray ionization | CSI | Liquid extraction |
| Direct analysis in real time | DART | Plasma |
| Dielectric barrier discharge | DBD | Plasma |
| Desorption electrospray ionization | DESI | Liquid extraction |
| Hollow cathode discharge | HCD | Plasma |
| Laser ablation electrospray ionization | LAESI | Ablation |
| Liquid extraction surface analysis | LESA | Liquid extraction |
| MasSpec Pen | N/A | Liquid extraction |
| Nanospray desorption electrospray ionization | nanoDESI | Liquid extraction |
| Open port sampling interface | OPSI | Liquid extraction |
| Paper spray ionization | PSI | Liquid extraction |
| Probe electrospray ionization | PESI | Liquid extraction |
| Picolitre pressure probe electrospray ionization mass spectrometry | picoPPESI | Liquid extraction |
| Rapid evaporative ionization mass spectrometry | REIMS | Other |
| Surface acoustic wave nebulization | SAWN | Other |
| Secondary electrospray ionization | SESI | Other |
| Thread spray ionization | TSI | Liquid extraction |
| Tapping‐mode scanning probe electrospray ionization | t‐SPESI | Liquid extraction |