The use of atmospheric pressure ionization (API) sources has become very popular for gas
chromatography-mass spectrometry (GC-MS) determinations. GC-API-MS shows important …

Ambient mass spectrometry techniques that are capable of ionizing compounds of low
polarity are discussed. Photoionization and plasma-based ionization are the most important …

Electrospray ionization (ESI) generates bare analyte ions from charged droplets, which
result from spraying a liquid in a strong electric field. Experimental observations available in …

A model to quantitatively predict ion abundances from atmospheric pressure chemical
ionization (APCI) between hydrated protons and a volatile organic compound (VOC) was …

Active capillary plasma ionization is a highly efficient ambient ionization method. Its general
principle of ion formation is closely related to atmospheric pressure chemical ionization …

A tube plasma ionization (TPI) open-air source for gas chromatography–mass spectrometry
(GC–MS) was developed. This source is based on an inverse low temperature plasma …

Hydroxyl and hydroperoxy radicals are key species for the understanding of atmospheric
oxidation processes. Their measurement is challenging due to their high reactivity; therefore …

Ionization of organic compounds with different structural and energetic properties including
benzene derivatives, polycyclic aromatic hydrocarbons (PAHs), ketones, and polyenes was …

The advancement of a hybrid atomic force microscopy/mass spectrometry imaging platform
demonstrating the co-registered topographical, band excitation nanomechanical, and mass …

Background The application of liquid chromatography coupled to tandem mass spectrometry
(LC-MS/MS) represents one of the most compelling opportunities for advancements in …