Arizona Hydrogen Sulfide Analyzer Jerome 631-X User Manual
Page 48
15. APPENDIX
E:
CALCULATION OF DYNACALIBRATOR H
2
S
CONCENTRATION
UNIT DEFINITIONS
mole
/ 6.02@10
23
molecules
9
10
gm
(ngm)
nanogram
=
PPM
v
/ 10
-6
CALCULATIONS
ume
volume/vol
2
PPM
rate)
flow
gas
(total
S)
H
of
weight
(molecular
rate)
permeation
(tube
C)
o
25
@
ume
(molar vol
=
∗
v
PPM
0.512
min
ml
7138
min
ngm
5090
mole
gm
07
.
34
mole
ltr
24.45
=
∗
∗
∗
∗
∗
Mole units divide out, as do mass units, leaving volume per minute in both the numerator and
the denominator. This leaves a unitless quantity scaled by 1 x 10
6
in the denominator that is
the definition of PPM.
Page 48 of 50
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