Air Sampling Procedures For Chemicals Contaminants
Chemical
Sampling Method and
Sampling Rate* Sample Volume in
Contaminant
Collecting Medium
Per Minute
Liters**
Minimum
Maximum
ChromosorbR*** tube for
Acetic acid
15
60
100─500 ml
acids (see page D-9)
Acetone
200/400 mg charcoal
1
6
20─100 ml
tube or passive monitor
Acid mists
See Specific Acid
See Specific Compound
Alkali mists
(such as
NaOH,KOH)
100-500 ml
3
24
Ammonia
Preferred:
100/200-mg
ammonia
adsorption tube
(ORBOR-77) R (see
page D-9)
1-2 liters
10
40
Alternate:
Midget impinger
(15 ml of 0.5%
sulfuric acid)
0.5-2.5
400
--
Asbestos
25 um filter cassette,
liters
open face shrouded
(CE 0.8 um filter) w/50
mm extension cowl
*Use the flow rate that will give the recommended air volume. Minimum liters generally
refer to the least number of liters that are required to see 0.1 to 0.2 TLV (TWA).
Maximum liters refer to largest number of liters, which may be collected without
significant breakthrough for a compound if present at approximately two times TLV
(TWA) levels. The recommended volumes should be collected even if very low or very
high levels are suspected.
**Contact USAEHA for information regarding temporary loan of equipment.
MD0165
D-2
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