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Title: High-throughput liquid-absorption air-sampling apparatus and methods

Abstract

A portable high-throughput liquid-absorption air sampler [PHTLAAS] has an asymmetric air inlet through which air is drawn upward by a small and light-weight centrifugal fan driven by a direct current motor that can be powered by a battery. The air inlet is so configured as to impart both rotational and downward components of motion to the sampled air near said inlet. The PHTLAAS comprises a glass tube of relatively small size through which air passes at a high rate in a swirling, highly turbulent motion, which facilitates rapid transfer of vapors and particulates to a liquid film covering the inner walls of the tube. The pressure drop through the glass tube is <10 cm of water, usually <5 cm of water. The sampler's collection efficiency is usually >20% for vapors or airborne particulates in the 2-3.mu. range and >50% for particles larger than 4.mu.. In conjunction with various analyzers, the PHTLAAS can serve to monitor a variety of hazardous or illicit airborne substances, such as lead-containing particulates, tritiated water vapor, biological aerosols, or traces of concealed drugs or explosives.

Inventors:
 [1]
  1. (95706 William Dr., Hinsdale, IL 60521)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
873086
Patent Number(s):
6087183
Assignee:
Zaromb, Solomon (95706 William Dr., Hinsdale, IL 60521) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
high-throughput; liquid-absorption; air-sampling; apparatus; methods; portable; air; sampler; phtlaas; asymmetric; inlet; drawn; upward; light-weight; centrifugal; fan; driven; direct; current; motor; powered; battery; configured; impart; rotational; downward; components; motion; sampled; near; comprises; glass; tube; relatively; size; passes; rate; swirling; highly; turbulent; facilitates; rapid; transfer; vapors; particulates; liquid; film; covering; inner; walls; pressure; drop; 10; cm; water; collection; efficiency; 20; airborne; 2-3; range; 50; particles; larger; conjunction; various; analyzers; serve; monitor; variety; hazardous; illicit; substances; lead-containing; tritiated; vapor; biological; aerosols; traces; concealed; drugs; explosives; liquid film; sampled air; air sampler; inner wall; pressure drop; direct current; water vapor; air inlet; air sample; glass tube; sampling apparatus; collection efficiency; tritiated water; inner walls; airborne particulate; air passes; current motor; airborne particulates; containing particulate; drawn upward; high-throughput liquid-absorption; fan drive; throughput liquid; containing particulates; /436/55/422/

Citation Formats

Zaromb, Solomon. High-throughput liquid-absorption air-sampling apparatus and methods. United States: N. p., 2000. Web.
Zaromb, Solomon. High-throughput liquid-absorption air-sampling apparatus and methods. United States.
Zaromb, Solomon. Sat . "High-throughput liquid-absorption air-sampling apparatus and methods". United States. https://www.osti.gov/servlets/purl/873086.
@article{osti_873086,
title = {High-throughput liquid-absorption air-sampling apparatus and methods},
author = {Zaromb, Solomon},
abstractNote = {A portable high-throughput liquid-absorption air sampler [PHTLAAS] has an asymmetric air inlet through which air is drawn upward by a small and light-weight centrifugal fan driven by a direct current motor that can be powered by a battery. The air inlet is so configured as to impart both rotational and downward components of motion to the sampled air near said inlet. The PHTLAAS comprises a glass tube of relatively small size through which air passes at a high rate in a swirling, highly turbulent motion, which facilitates rapid transfer of vapors and particulates to a liquid film covering the inner walls of the tube. The pressure drop through the glass tube is <10 cm of water, usually <5 cm of water. The sampler's collection efficiency is usually >20% for vapors or airborne particulates in the 2-3.mu. range and >50% for particles larger than 4.mu.. In conjunction with various analyzers, the PHTLAAS can serve to monitor a variety of hazardous or illicit airborne substances, such as lead-containing particulates, tritiated water vapor, biological aerosols, or traces of concealed drugs or explosives.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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