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Title: Electrospray ionizer for mass spectrometry of aerosol particles

Abstract

A device and method are disclosed to apply ESI-based mass spectroscopy to submicrometer and nanometer scale aerosol particles. Unipolar ionization is utilized to charge the particles in order to collect them electrostatically on the tip of a tungsten rod. Subsequently, the species composing the collected particles are dissolved by making a liquid flow over the tungsten rod. This liquid with dissolved aerosol contents is formed into highly charged droplets, which release unfragmented ions for mass spectroscopy, such as time-of-flight mass spectroscopy. The device is configured to operate in a switching mode, wherein aerosol deposition occurs while solvent delivery is turned off and vice versa.

Inventors:
; ; ; ; ;
Publication Date:
Research Org.:
MSP Corporation, Shoreview, MN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1393424
Patent Number(s):
9,768,005
Application Number:
15/135,132
Assignee:
MSP Corporation CHO
DOE Contract Number:  
SC0013302
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Apr 21
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE

Citation Formats

He, Siqin, Hogan, Chris, Li, Lin, Liu, Benjamin Y. H., Naqwi, Amir, and Romay, Francisco. Electrospray ionizer for mass spectrometry of aerosol particles. United States: N. p., 2017. Web.
He, Siqin, Hogan, Chris, Li, Lin, Liu, Benjamin Y. H., Naqwi, Amir, & Romay, Francisco. Electrospray ionizer for mass spectrometry of aerosol particles. United States.
He, Siqin, Hogan, Chris, Li, Lin, Liu, Benjamin Y. H., Naqwi, Amir, and Romay, Francisco. Tue . "Electrospray ionizer for mass spectrometry of aerosol particles". United States. doi:. https://www.osti.gov/servlets/purl/1393424.
@article{osti_1393424,
title = {Electrospray ionizer for mass spectrometry of aerosol particles},
author = {He, Siqin and Hogan, Chris and Li, Lin and Liu, Benjamin Y. H. and Naqwi, Amir and Romay, Francisco},
abstractNote = {A device and method are disclosed to apply ESI-based mass spectroscopy to submicrometer and nanometer scale aerosol particles. Unipolar ionization is utilized to charge the particles in order to collect them electrostatically on the tip of a tungsten rod. Subsequently, the species composing the collected particles are dissolved by making a liquid flow over the tungsten rod. This liquid with dissolved aerosol contents is formed into highly charged droplets, which release unfragmented ions for mass spectroscopy, such as time-of-flight mass spectroscopy. The device is configured to operate in a switching mode, wherein aerosol deposition occurs while solvent delivery is turned off and vice versa.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 19 00:00:00 EDT 2017},
month = {Tue Sep 19 00:00:00 EDT 2017}
}

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