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Title: Sensitive ion detection device and method for analysis of compounds as vapors in gases

Abstract

An ion mobility spectrometer (IMS) for the detection of trace gaseous molecular compounds dissolved or suspended in a carrier gas, particularly in ambient air, without preconcentration or the trapping of analyte particles. The IMS of the invention comprises an ionization volume of greater than 5 cm.sup.3 and preferably greater than 100 cm.sup.3. The larger size ionizers of this invention enable analysis of trace (<1 ppb) of sample compounds in the gas phase. To facilitate efficient ion motion through the large volume ionization and reaction regions of the IMS, an electric field gradient can be provided in the ionization region or in both the ionization and reaction regions. The systems can be implemented with radioactive ionization sources, corona discharge ion sources or ions can be formed by photoionization. In specific embodiments, particularly when the sample gas is ambient air, the sample gas is heater prior to entry into the instrument, the instrument is run at temperatures above ambient, and the instrument can be heated by contact with heated sample gas exiting the instrument.

Inventors:
;
Issue Date:
Research Org.:
SNL (Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1124780
Patent Number(s):
8,653,449
Application Number:
12/741,811
Assignee:
The Arizona Board of Regents on behalf of the University of Arizona (Tucson, AZ)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Denton, M. Bonner, and Sperline, Roger P. Sensitive ion detection device and method for analysis of compounds as vapors in gases. United States: N. p., 2014. Web.
Denton, M. Bonner, & Sperline, Roger P. Sensitive ion detection device and method for analysis of compounds as vapors in gases. United States.
Denton, M. Bonner, and Sperline, Roger P. Tue . "Sensitive ion detection device and method for analysis of compounds as vapors in gases". United States. https://www.osti.gov/servlets/purl/1124780.
@article{osti_1124780,
title = {Sensitive ion detection device and method for analysis of compounds as vapors in gases},
author = {Denton, M. Bonner and Sperline, Roger P},
abstractNote = {An ion mobility spectrometer (IMS) for the detection of trace gaseous molecular compounds dissolved or suspended in a carrier gas, particularly in ambient air, without preconcentration or the trapping of analyte particles. The IMS of the invention comprises an ionization volume of greater than 5 cm.sup.3 and preferably greater than 100 cm.sup.3. The larger size ionizers of this invention enable analysis of trace (<1 ppb) of sample compounds in the gas phase. To facilitate efficient ion motion through the large volume ionization and reaction regions of the IMS, an electric field gradient can be provided in the ionization region or in both the ionization and reaction regions. The systems can be implemented with radioactive ionization sources, corona discharge ion sources or ions can be formed by photoionization. In specific embodiments, particularly when the sample gas is ambient air, the sample gas is heater prior to entry into the instrument, the instrument is run at temperatures above ambient, and the instrument can be heated by contact with heated sample gas exiting the instrument.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {2}
}

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Works referenced in this record:

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