Table A3. Means of normalized analyte concentrations for the tubing material study.1
Exposure time
Analyte
(hr)
NB
TDCE
MNT
TCE
CLB
ODCB
PDCB
PCE
FLEXIBLE TUBINGS
Polyurethane
1
0.071
0.037
0.042
0.023
0.019
0.019
0.016
0.019
8
0.027
0.012
0.005
0.004
0.003
0.001
D
0.002
24
0.021
0.004
0.003
0.002
0.001
0.001
D
0.002
48
0.021
D
0.002
0.001
0.001
D
D
0.001
72
0.014
D
0.002
0.001
0.001
0.001
D
0.001
PVC
1
0.108
0.063
0.035
0.028
0.020
0.016
0.014
0.018
8
0.082
0.023
0.008
0.007
0.004
0.001
0.001
0.002
24
0.098
0.012
0.005
0.004
0.003
0.001
0.001
0.001
48
0.112
0.011
0.003
0.003
0.002
0.001
D
0.001
72
0.073
0.004
0.003
0.002
0.001
0.001
D
0.001
TPE
1
0.149
0.042
0.056
0.022
0.019
0.019
0.016
0.018
8
0.049
0.010
0.013
0.004
0.003
0.001
D
0.001
24
0.033
0.004
0.007
0.001
0.001
0.001
D
*
48
0.022
0.005
0.005
*
0.001
D
D
D
72
0.013
D
0.006
*
0.001
D
D
D
Plasticized PP (formulation 1)
1
0.210
0.055
0.074
0.025
0.021
0.018
0.015
0.017
8
0.076
0.016
0.020
0.005
0.004
0.001
0.001
0.001
24
0.038
0.004
0.010
0.002
0.002
0.001
D
*
48
0.018
0.001
0.006
0.001
0.001
0.001
D
*
72
0.009
D
0.003
0.001
0.001
D
D
0.001
Plasticized PP (formulation 2)
1
0.202
0.051
0.070
0.022
0.018
0.016
0.013
0.015
8
0.066
0.015
0.017
0.005
0.004
0.001
0.001
0.001
24
0.029
0.004
0.008
0.003
0.002
0.001
0.001
0.001
48
0.013
*
0.004
0.001
0.001
*
D
*
72
0.009
D
0.002
0.001
0.001
D
D
D
P(VDF-HFP)
1
0.692
0.669
0.414
0.526
0.418
0.250
0.218
0.287
8
0.474
0.480
0.203
0.322
0.219
0.103
0.087
0.134
24
0.353
0.333
0.132
0.206
0.142
0.065
0.053
0.076
48
0.274
0.284
0.095
0.163
0.104
0.046
0.038
0.063
72
0.205
0.206
0.069
0.117
0.075
0.032
0.026
0.043
Fluoroelastomer
1
0.610
0.617
0.338
0.454
0.340
0.197
0.173
0.224
8
0.415
0.447
0.169
0.275
0.181
0.086
0.072
0.106
24
0.297
0.287
0.111
0.169
0.114
0.053
0.045
0.058
48
0.242
0.241
0.086
0.137
0.086
0.040
0.034
0.048
72
0.185
0.177
0.063
0.099
0.063
0.028
0.024
0.034
RIGID TUBINGS
Polyamide
1
0.688(.675)
0.581(.563)
0.461(.449)
0.320(.305)
0.247(.232)
0.109(.100)
0.089(.081)
0.169(.155)
8
0.446(.403)
0.278(.262)
0.204(.166)
0.127(.096)
0.089(.062)
0.025(.014)
0.021(.011)
0.049(.032)
24
0.292(.235)
0.163(.130)
0.117(.078)
0.074(.048)
0.059(.037)
0.015(.007)
0.013(.006)
0.027(.016)
48
0.221
0.135
0.088
0.058
0.042
0.012
0.011
0.023
72
0.173
0.087
0.066
0.044
0.024
0.009
0.008
0.018
1 These values are determined by dividing the mean concentration of a given analyte at a given time and for a particu-
lar tubing by the mean concentration (for the same analyte) of the control samples taken at the same time.
DAnalyte concentrations were less than MDL.
* Values less than 0.0005.
Values in parentheses are adjusted to a material surface-area-to-solution-volume ratio equivalent to the other tubing
materials.
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