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Title: Preconcentrator with high volume chiller for high vapor pressure particle detection

Abstract

Apparatus and method for collecting particles of both high and low vapor pressure target materials entrained in a large volume sample gas stream. Large volume active cooling provides a cold air supply which is mixed with the sample gas stream to reduce the vapor pressure of the particles. In embodiments, a chiller cools air from ambient conditions to 0-15.degree. C. with the volumetric flow rate of the cold air supply being at least equal to the volumetric flow rate of the sample gas stream. In further embodiments an adsorption media is heated in at least two stages, a first of which is below a threshold temperature at which decomposition products of the high vapor pressure particle are generated.

Inventors:
Issue Date:
Research Org.:
SNL-A (Sandia National Laboratories, Albuquerque, NM (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1107620
Patent Number(s):
8,561,483
Application Number:
13/094,615
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Linker, Kevin L. Preconcentrator with high volume chiller for high vapor pressure particle detection. United States: N. p., 2013. Web.
Linker, Kevin L. Preconcentrator with high volume chiller for high vapor pressure particle detection. United States.
Linker, Kevin L. Tue . "Preconcentrator with high volume chiller for high vapor pressure particle detection". United States. https://www.osti.gov/servlets/purl/1107620.
@article{osti_1107620,
title = {Preconcentrator with high volume chiller for high vapor pressure particle detection},
author = {Linker, Kevin L},
abstractNote = {Apparatus and method for collecting particles of both high and low vapor pressure target materials entrained in a large volume sample gas stream. Large volume active cooling provides a cold air supply which is mixed with the sample gas stream to reduce the vapor pressure of the particles. In embodiments, a chiller cools air from ambient conditions to 0-15.degree. C. with the volumetric flow rate of the cold air supply being at least equal to the volumetric flow rate of the sample gas stream. In further embodiments an adsorption media is heated in at least two stages, a first of which is below a threshold temperature at which decomposition products of the high vapor pressure particle are generated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {10}
}

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