Table A8 (cont'd). Second pesticide study--Effect of a water rinse.
Analyte conc. (g/L) in control C
Lindane
Heptachlor Aldrin
Dieldrin
A
592
78.7
157
357
B
581
83.7
157
366
C
602
86.4
165
376
592
82.9
160
366
X
% RSD
1.8
4.7
2.9
2.6
Solution conc. (g/L) after 24-hr sorption
Desorbed conc. (g/L) after 24 hr
Material
Lindane
Heptachlor Aldrin
Dieldrin
Lindane Heptachlor Aldrin Dieldrin
PVC-A
553
40.4
122
257
3.92
9.55
5.79
56.5
PVC-B
578
44.8
130
268
3.51
10.8
6.31
58.4
PVC-C
552
40.4
121
257
3.88
9.68
6.00
58.1
561
41.9
124
261
3.77
10.0
6.03
57.7
X
% RSD
2.6
6.1
4.0
2.4
6.0
6.9
4.3
1.8
% of initial 95
50
78
71
0.6
12
3.8
16
PTFE-A
590
50.3
128
303
1.07
13.4
9.19
39.9
PTFE-B
579
52.0
127
299
1.27
11.8
8.26
38.0
PTFE-C
556
52.1
125
307
0.83
11.0
8.26
29.3
575
51.5
127
303
1.06
12.1
8.57
35.7
X
% RSD
3.0
2.0
1.2
1.3
21
10
6.3
16
% of initial 97
62
79
83
0.2
15
5.4
10
SS-A
578
26.2
119
199.9
5.97
8.79
7.11
65.7
SS-B
576
29.8
118
211
9.35
8.65
8.48
65.5
SS-C
571
26.8
115
217
5.52
10.2
7.40
73.0
575
27.6
117
209
6.95
9.21
7.66
68.1
X
% RSD
0.6
7.0
1.8
4.1
30
9.3
9.4
6.3
% of initial 97
33
73
57
1.2
11
4.8
19
MDL
0.35
0.14
0.53
0.83
26
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