Introduction Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) is a powerful analytical technique used for the detection and quantification of volatile organic compounds (VOCs) in environmental samples. This article will provide an overview of the principles, components, and applications of Read more…

Introduction Chemical ionisation mass spectrometry (CI-MS) is a powerful analytical technique used to identify and quantify the composition of chemical compounds. In CI-MS, ion-molecule reactions play a crucial role in the formation of ions that are subsequently detected and analyzed. Read more…

Energetics: PTR-MS Drift-tube Conditions A commonly used ionization procedure in a classic PTR-MS instrument incorporates proton-transfer reactions, usually taking H3O+ as a proton donor. One of the biggest benefit of using H3O+ as promary reagent ion is that it does Read more…

Ion-molecule Collision Reactions in Gas-Phase In mass spectrometry, ion-molecule reactions refer to the chemical reactions that take place between charged ions and neutral molecules within the gas phase of the instrument. These reactions can occur either before or after the Read more…