Micromeritics TriStar II 3020 - Page 342

Appendix C TriStar II 3020
C-34 302-42828-01 - Dec 2012
Remaining pore surface area for the I
th
point (m
2
/g):
S
I
V
I
V
I 1–
–D 10
6–
m
3
/cm
3

t
I
t
I 1–
–10
10–
m/A
-----------------------------------------------------------------------------------
=
where
D = density conversion factor (cm
3
liquid/cm
3
STP) on the Adsorptive Properties
dialog
Incremental pore surface area occluded for the I
th
point (m
2
/g):
S
INC
I
S
I 1–
S
I
–=
Cumulative pore surface area occluded for the I
th
point (m
2
/g):
S
CUM
I
S
INC
I
S
INC
I 1–
 S
INC
1
+++=
dA/dR pore surface area for the I
th
point (m
2
/g-Å):
dA
dR
I
--------
S
INC
I
t
I
t
I 1–
–
-------------------
=
Incremental pore volume occluded for the I
th
point (cm
3
/g):
V
INC
I
S
INC
I
10
4
cm
2
/m
2
R
I
10
8–
cm/Å=
V
CUM
I
V
INC
I
V
INC
I 1–
 V
INC
1
+++=
Cumulative pore volume occluded for the I
th
point (cm
3
/g):
dV/dR pore volume for the I
th
point (cm
3
/g-Å):
dV
dR
I
--------
V
INC
I
t
I
t
I 1–
–
-------------------
=