Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface
Vacuum ultraviolet (VUV) single photon ionization mass spectrometry (SPI-MS) is a vacuum-based technique typically used for the analysis of gas phase and solid samples, but not for liquids due to the challenge in introducing volatile liquids in a vacuum. Here we present the first demonstration of li...
Saved in:
Published in | Review of scientific instruments Vol. 89; no. 11; p. 115105 |
---|---|
Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.11.2018
|
Online Access | Get more information |
Cover
Loading…
Summary: | Vacuum ultraviolet (VUV) single photon ionization mass spectrometry (SPI-MS) is a vacuum-based technique typically used for the analysis of gas phase and solid samples, but not for liquids due to the challenge in introducing volatile liquids in a vacuum. Here we present the first demonstration of
liquid analysis by integrating the System for Analysis at the Liquid Vacuum Interface (SALVI) microfluidic reactor into VUV SPI-MS. Four representative volatile organic compound (VOC) solutions were used to illustrate the feasibility of liquid analysis. Our results show the accurate mass identification of the VOC molecules and the reliable determination of appearance energy that is consistent with ionization energy for gaseous species in the literature as reported. This work validates that the vacuum-compatible SALVI microfluidic interface can be utilized at the synchrotron beamline and enable the
study of gas-phase molecules evaporating off the surface of a liquid, which holds importance in the study of condensed matter chemistry. |
---|---|
ISSN: | 1089-7623 |
DOI: | 10.1063/1.5048315 |