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Robert B. Nash Joha W. Bora
D/0020,JBldg.. 5^H________________ _D_/_8_506_i_B_recksvilleR&D Cente
Oct. 31. 1974
Results of VCM Analyses of MSA Carbon Tubes
The gas chromatographic analyses of VCM adsorbed inside MSA carbon tubes were completed on October 24, 1974. The results are as follows:
Sample Number
1
Sampling Location
inside respiratora
Carbon Zone
front back
Air Volume" (lite rs)
Total VCM (mg)
4. 2 4. 2
0. 080 0.0034
Conte nt (ppm)
6. 7 2.8
2
outside respirator3.
front
back
3
inside respirator*1
front
back
4
outside respirator*1
front
back
4. 2 4.2
5.2 5.2
5. 2 5.2
0. 73 0. 034
0.0061 0.0032
0. 51 0. 014
61. 2.8
0.46 0.24
38. 1. 0
5
inside respirator3.
front
fs?g
4. 2
**
6
outside respirator3.
front * U/7nM 4. 2
0. 027 0.00097
0. 73 0. 021
2.3 0. 081
61.2 1.8
7 inside respirator3.
1.5' 1.5
0. 016 0.00039
3.8 0. 09
8 outside respirator3. back
1.5
0.62
145.
1.5
0. 037
8. 7
9
inside respirator3.
front
back
10
outside respirator3.
front
back
1.5 1.5
1.5 1.5
0. 061 0.0015
0.47 0. 020
14. 3 0. 35
110. 4. 7
11
inside respirator3
front
1.5
0.0015
0. 35
back
1.5
0.00034
0. 08
12
outside respirator3
front
back
u..*. MtV, M ft lei<4. m
1.5 1.5
0. 52 0. 027
122. K 6.3
-1
-a-
aThese samples were collected in a cold room at 24*F (-4. 4#C). The equation for calculating parts per million of VCM in air is
ppm = 352. 0 x (VCM wt. in mg) / (air volume in liters).
^These samples were collected at about 72F (22*C). The equation for calculating parts per million of VCM in air is
ppm 391.2 x (VCM wt. in mg) / (air volume in liters).
cad cc:
E. B. Katzenmeyer, Jr. P. M. Zakriski RicD Files
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