2011

Mechanistic study on the ionization of trace gases by an electrospray plume

Mechanistic study on the ionization of trace gases by an electrospray plume

P. M-L Sinues, E. Criado, G. Vidal-de-Miguel

The fact that electrosprays of pure solvents can efficiently ionize gas-phase analytes has been known for decades, although this method has not been widely exploited. With the advent of ambient mass spectrometry, this approach is becoming increasingly popular. However, the mechanism by which vapors become ionized remains largely unknown …

Contribution of liquid-phase and gas-phase ionization in extractive electrospray ionization mass spectrometry of primary amines

Contribution of liquid-phase and gas-phase ionization in extractive electrospray ionization mass spectrometry of primary amines

L. Meier, S. Schmid, C. Berchtold and R. Zenobi

In this study, we investigated how binary mixtures of compounds influence each other's signal intensity in electrospray ionization (ESI), extractive electrospray ionization (EESI) and secondary electrospray ionization (SESI) experiments. The experiments were conducted using a series of homologous primary amines (from 1-butyl to 1- decylamine) …

Characterizing Bacterial Volatiles using Secondary Electrospray Ionization Mass Spectrometry (SESI-MS)

Characterizing Bacterial Volatiles using Secondary Electrospray Ionization Mass Spectrometry (SESI-MS)

H. D. Bean, J. Zhu, J. E. Hill

Secondary electrospray ionization mass spectrometry (SESI-MS) is a method developed for the rapid detection of volatile compounds, without the need for sample pretreatment. The method was first described by Fenn and colleagues and has been applied to the detection of illicit drugs and explosives, the characterization of skin volatiles, and the analysis of breath .

Secondary electrospray ionization-mass spectrometry: breath study on a control group

Secondary electrospray ionization-mass spectrometry: breath study on a control group

P. M-L Sinues, L. Zingaro, A. Finiguerra and S. Cristoni

A series of fatty acids among other compounds have recently been detected in breath in real time by secondary electrospray ionization mass spectrometry (SESI-MS). Our main aim in this work was to quantify their abundance in breath calibrating the system with standard vapors and extend the study to a control group for several days, both under fasting conditions and after sucrose intake.