Air Sampling Procedures For Chemicals Contaminants (continued)
Chemical
Sampling Method and
Sampling
Sample Volume in
Contaminant
Collecting Medium
Rate* Per
Liters**
Minute
Minimum
Maximum
Quartz
(crystalline
silica)
1-4 liters
250
1000
a. Total****
Filter cassette, closed
face with spacer pre-
weighed (PVC, 5.0 um
filter)
1.7 liters
500
816
b. Respirable
Filter, closed face with
only
spacer, pre-weighed
and10 mm cyclone
(PVC, 5.0 um filter, 37
mn diameter)*****
1-2 liters
60
960
Sodium
Filter cassette, closed
hydroxide
face with spacer (CE 0.8
um filter) submit three
blank filters
50-500 ml
5
40
Stoddard
200/400 mg charcoal
solvent
tube
40
5
50-500 ml
Styrene
200/400 mg charcoal
or
tube
OR
--
--
1-8 hr
passive monitor
200-500 ml
24
48
Sulfur dioxide
200/400 mg high purity
Silica gel tube
200-500 ml
24
48
Sulfuric acid
200/400 mg high purity
Silica gel tube
Toluene
200/400 charcoal tube
50-500 ml
5
40
****Total quartz sampling not generally recommended. Sample for respirable dust.
*****A bulk air sample should be submitted for determination of percent respirable
quartz.
MD0165
D-9