8
8
MeOH
MeOH
Tetraglyme
Tetraglyme
PPG
PPG
6
6
c
d
4
4
b b
c
b
2
2
a
a a a
b
aa a
a
a
a/b
a a/b
b
a a a a/b
0
0
0
10
20
30
0
10
20
30
Time (days)
Time (days)
a. TDCE.
d. TCE.
8
8
MeOH
MeOH
Tetraglyme
Tetraglyme
PPG
PPG
6
6
d
c
4
4
b
b
c
b
a
c
b
b
a
2
2
a
a
a a
a
a
a a a
a
a
a
a
0
0
0
10
20
30
0
10
20
30
Time (days)
Time (days)
e. Tol.
b. CDCE.
8
8
MeOH
MeOH
Tetraglyme
Tetraglyme
PPG
PPG
6
6
d
4
4
c
b
a
b b
b
c
a
2
b b
2
a
a
aa
b
a b b
a
a
a a a
0
0
0
10
20
30
0
10
20
30
Time (days)
Time (days)
c. Ben.
f. PCE.
Figure 3. Mean analyte concentrations determined for each extractant and extraction period for the CR-B vapor-
fortified soil with MeOH, tetraglyme, and PPG. Soils designated with different letters are significantly different at
the 95% confidence level.
13
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