APPENDIX A: CONCENTRATIONS OF ANIONS AND CATIONS SORBED BY WELL CASINGS
by well casings.
well casings.
Contact time, hours
Contact time, hours
Treatment
1
8
24
72
Treatment
1
8
24
72
CONTROL
48.8
49.5
50.4
49.4
CONTROL
48.7
50.0
48.5
49.9
CONTROL
50.0
49.3
49.4
50.3
CONTROL
51.1
50.4
50.6
49.4
CONTROL
49.7
49.8
49.3
49.4
CONTROL
49.6
48.5
51.2
49.6
49.5a
49.5a,b
49.7a,b
49.7a
49.8a,b
49.6a
50.1a
49.6a
X
X
% RSD
1.29
0.59
1.17
1.09
% RSD
2.47
2.01
2.81
0.46
PVC
49.7
49.4
49.9
49.6
PVC
50.4
48.8
51.5
49.6
PVC
50.1
50.0
49.5
48.9
PVC
50.1
49.9
50.1
50.3
PVC
49.8
50.2
49.3
49.1
PVC
51.3
51.4
49.8
49.3
49.9a
49.9a,b
49.5a,b
49.2a,b
50.6b
50.0a
50.5a
49.7a
X
X
% RSD
0.44
0.84
0.65
0.75
%RSD
1.28
2.56
1.76
1.05
PTFE
49.7
49.1
49.5
49.4
PTFE
49.4
50.2
49.7
49.3
PTFE
49.9
50.0
49.3
49.5
PTFE
49.6
49.7
50.1
48.7
PTFE
49.1
49.6
50.1
49.5
PTFE
49.1
50.0
50.6
49.3
49.5a
49.6a,b
49.6a,b
49.5a,b
49.4a,b
50.0a
50.1a
49.1a
X
X
% RSD
0.79
0.99
0.85
0.16
%RSD
0.45
0.58
0.90
0.71
FEP
49.5
48.6
50.9
50.0
FEP
49.1
49.2
50.8
49.9
FEP
49.2
49.6
50.2
49.5
FEP
49.6
50.0
52.3
49.5
FEP
50.1
50.4
49.3
50.1
FEP
49.7
49.6
48.9
49.4
49.6a
49.6a,b
50.1b
49.9a
49.5a,b
50.0a
50.7a
49.6a
X
X
% RSD
0.99
1.84
1.60
0.68
% RSD
0.65
0.75
3.40
0.54
FRE
47.9
48.4
49.2
49.1
FRE
49.3
49.1
50.2
49.4
FRE
46.3
48.2
49.1
48.4
FRE
49.1
48.7
50.4
47.9
FRE
47.3
49.0
48.6
49.3
FRE
49.1
49.0
48.1
49.3
47.2b
48.6a
49.0a
48.9b
49.2a
48.9a
49.5a
48.9a
X
X
% RSD
1.63
0.87
0.63
0.98
% RSD
0.22
0.43
2.60
1.72
FRP
51.0
50.6
50.2
49.3
FRP
51.7
48.4
49.5
49.5
FRP
49.3
53.1
48.8
50.1
FRP
49.8
49.9
50.4
50.7
FRP
49.8
49.4
50.3
49.2
FRP
50.0
50.5
50.7
48.6
50.5b
49.6a
50.2a
49.6a
X
50.1a
51.0b
49.7a,b
49.5a,b
X
% RSD
1.72
3.70
1.73
0.99
% RSD
2.08
2.18
1.22
2.18
Values with the same letter for the same time were not signifi-
Values with the same letter for the same time were not signifi-
cantly different.
cantly different.
14
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