User`s guide

Sampling Techniques
330
Table 25 Mass of Component Collected on a Sample Tube
During Pumped Air Monitoring
The data in Table 26 is based on a sampling time of 8 hours (480
minutes).
Atmospheric
Concentration
Molecular
MW = 50
Height
MW = 75
of
MW = 100
the
MW = 150
Component
MW = 200
1000 ppm 20 mg 30 mg 40 mg 60 mg 80 mg
10 ppm 200
μg 300 μg400 μg 600 μg800 μg
1 ppm 20
μg30 μg40 μg60 μg 80 μg
10 ppb 200 ng 300 ng 400 ng 600 ng 800 ng
1 ppb 20 ng 30 ng 40 ng 60 ng 80 ng
10 ppt 200 pg 300 pg 400 pg 600 pg 800 pg