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Title: Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface

Abstract

Vacuum ultraviolet (VUV) single photon ionization mass spectrometry (SPI-MS) is a vacuum-based technique typically used for analysis of gas phase and solid samples, but not for liquids, due to the challenge in proposing volatile liquids in vacuum. In this work we introduce the first demonstration of in situ 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 feasibility of liquid analysis. Our results reflect accurate mass identification of the VOC molecules and reliable determination of appearance energy (AE) that is consistent with ionization energy (IE) for gaseous species in literature as reported. This work validates that the vacuum-compatible SALVI microfluidic interface can be utilized at the synchrotron beamline and enable in situ research of gas-phase molecules evaporating off the surface of a liquid, which holds importance in the study of condensed matter chemistry.

Authors:
 [1];  [2]; ORCiD logo [1];  [2];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1545066
Report Number(s):
PNNL-SA-139017
Journal ID: ISSN 0034-6748
Grant/Contract Number:  
AC05-76RL01830; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 89; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; SALVI; VOCs; appearance energy; ionization energy; liquid; VUV single photon ionization mass spectrometry

Citation Formats

Komorek, Rachael, Xu, Bo, Yao, Juan, Ablikim, Utug, Troy, Tyler P., Kostko, Oleg, Ahmed, Musahid, and Yu, Xiao-Ying. Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface. United States: N. p., 2018. Web. doi:10.1063/1.5048315.
Komorek, Rachael, Xu, Bo, Yao, Juan, Ablikim, Utug, Troy, Tyler P., Kostko, Oleg, Ahmed, Musahid, & Yu, Xiao-Ying. Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface. United States. doi:10.1063/1.5048315.
Komorek, Rachael, Xu, Bo, Yao, Juan, Ablikim, Utug, Troy, Tyler P., Kostko, Oleg, Ahmed, Musahid, and Yu, Xiao-Ying. Fri . "Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface". United States. doi:10.1063/1.5048315. https://www.osti.gov/servlets/purl/1545066.
@article{osti_1545066,
title = {Enabling liquid vapor analysis using synchrotron VUV single photon ionization mass spectrometry with a microfluidic interface},
author = {Komorek, Rachael and Xu, Bo and Yao, Juan and Ablikim, Utug and Troy, Tyler P. and Kostko, Oleg and Ahmed, Musahid and Yu, Xiao-Ying},
abstractNote = {Vacuum ultraviolet (VUV) single photon ionization mass spectrometry (SPI-MS) is a vacuum-based technique typically used for analysis of gas phase and solid samples, but not for liquids, due to the challenge in proposing volatile liquids in vacuum. In this work we introduce the first demonstration of in situ 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 feasibility of liquid analysis. Our results reflect accurate mass identification of the VOC molecules and reliable determination of appearance energy (AE) that is consistent with ionization energy (IE) for gaseous species in literature as reported. This work validates that the vacuum-compatible SALVI microfluidic interface can be utilized at the synchrotron beamline and enable in situ research of gas-phase molecules evaporating off the surface of a liquid, which holds importance in the study of condensed matter chemistry.},
doi = {10.1063/1.5048315},
journal = {Review of Scientific Instruments},
number = 11,
volume = 89,
place = {United States},
year = {2018},
month = {11}
}

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