Performance Determination of a Novel Liquid Calibration Unit utilizing Proton-Transfer-Reaction Mass Spectrometry (PTR-MS)

摘要

The Ionimed Liquid Calibration Unit(LCU) evaporates aqueous standards into a gas stream, resulting in a gas flow containing compounds at defined trace concentrations. This gas can be used for calibration of trace gas analyzers over an extensive range of compounds and concentrations it is quantitative and covers most of the previously detectable substances that can be solved in water or hexance. Additionally some compounds, that were hard to measure in the headspace of liquids, such as acids, can now be analyzed with a reasonable sensitivity.