Table A2 (cont'd). Second VOC study--Effect of rinsing.
Desorbed concentration (mg/L) after the following treatments
No treatment
Rinsed samples
24-hr sorb / 24-hr desorb
24-hr sorb / 24-hr desorb
Material
MNT
TCE
PDCB
PCE
MNT
TCE
PDCB
PCE
PVC-A
0.013
0.037
0.040
0.030
0.006
0.026
0.042
0.071
PVC-B
0.010
0.031
0.047
0.051
0.007
0.029
0.040
0.041
PVC-C
0.010
0.026
0.046
0.029
0.005
0.022
0.027
0.020
0.011
0.031
0.044
0.037
0.006
0.026
0.036
0.044
X
% RSD
16
18
9
34
17
14
22
58
% of initial
0.48
1.5
2.3
1.8
0.26
1.2
1.9
2.1
24-hr sorb / 24-hr desorb
24-hr sorb / 24-hr desorb
Material
MNT
TCE
PDCB
PCE
MNT
TCE
PDCB
PCE
PTFE-A
0.015
0.172
0.189
0.325
0.012
0.163
0.177
0.324
PTFE-B
0.018
0.167
0.186
0.313
0.013
0.165
0.179
0.309
PTFE-C
0.016
0.162
0.178
0.303
0.013
0.148
0.165
0.292
0.016
0.167
0.184
0.314
0.013
0.159
0.174
0.308
X
% RSD
9.4
3.0
3.1
3.5
4.6
5.9
4.4
5.2
% of initial
0.71
8.0
9.5
15
0.55
7.6
9.0
15
SS-A
0.013
0.012
0.028
0.036
LD
LD
LD
0.008
SS-B
0.009
0.007
0.022
0.014
LD
LD
0.009
LD
SS-C
0.014
0.009
0.032
0.032
LD
LD
LD
LD
0.012
0.009
0.027
0.027
LD
LD
LD
<0.005
X
% RSD
22
27
18
1.20
43
% of initial
0.52
0.45
1.4
1.3
MDL
0.001
0.002
0.009
0.004
LD = less than detection limit.
19
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