High-throughput liquid-absorption air-sampling apparatus and methods
- 95706 William Dr., Hinsdale, IL 60521
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Zaromb, Solomon (95706 William Dr., Hinsdale, IL 60521)
- Patent Number(s):
- US 6087183
- OSTI ID:
- 873086
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
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