Table A8. Second pesticide study--Effect of a water rinse.
Analyte concentration (g/L) in control A
Lindane Heptachlor Aldrin
Dieldrin
A
594
98.0
162
393
B
546
94.6
155
373
C
636
96.3
165
403
592
96.3
161
390
X
% RSD
7.6
1.8
3.2
3.9
Solution concentration (g/L)
Desorbed concentration (g/L)
after 10-min sorption
after 10 min
Material
Lindane Heptachlor Aldrin
Dieldrin
Lindane Heptachlor Aldrin Dieldrin
PVC-A
537
82.3
147
334
3.13
0.48
1.85
6.29
PVC-B
559
90.2
153
345
1.69
0.32
1.18
4.67
PVC-C
604
88.9
157
362
2.68
0.55
2.03
6.11
567
87.1
152
347
2.50
0.45
1.69
5.69
X
% RSD
6.0
4.9
3.3
4.1
29
26
27
16
% of initial
96
90
95
89
0.42
0.47
1.0
1.5
PTFE-A
642
94.1
163
373
0.76
0.85
1.25
6.46
PTFE-B
570
84.8
152
352
0.66
1.35
1.22
9.29
PTFE-C
550
87.0
150
347
0.69
1.24
1.40
9.09
587
88.6
155
357
0.70
1.15
1.29
8.28
X
% RSD
8.2
5.5
4.5
3.9
7.3
23
7.5
19
% of initial
99.2
92.0
96.3
91.5
0.12
1.2
0.80
2.1
SS-A
512
87.3
146
330
6.28
0.23
2.34
2.78
SS-B
643
89.7
169
363
5.71
0.31
3.31
3.69
SS-C
574
86.7
150
350
6.59
0.33
2.76
4.85
576
87.9
155
348
6.19
0.29
2.80
3.77
X
% RSD
11
1.8
7.9
4.8
7.2
18
17
27
% of initial
97
91
96
89
1.0
0.30
1.7
1.0
Analyte concentration (g/L) in control B
Lindane Heptachlor Aldrin
Dieldrin
A
591
84.4
161
376
B
547
75.6
146
353
C
611
89.7
166
385
583
83.2
158
371
X
% RSD
5.6
8.6
6.6
4.4
Solution concentration (g/L)
Desorbed concentration (g/L)
after 24-hr sorption
after 10 min
Material
Lindane Heptachlor Aldrin
Dieldrin
Lindane Heptachlor Aldrin Dieldrin
PVC-A
562
42.4
125
251
2.01
1.22
1.53
12.7
PVC-B
572
46.7
127
268
1.72
1.28
2.27
12.2
PVC-C
552
39.0
119
251
2.18
1.35
1.62
11.7
562
42.7
124
257
1.97
1.28
1.81
12.2
X
% RSD
1.8
9.0
3.4
3.8
11.8
5.1
22.3
4.1
% of initial
96
51
78
69
0.34
1.5
1.1
3.3
PTFE-A
590
50.1
126
305
0.57
3.13
2.48
14.8
PTFE-B
578
56.0
127
317
0.26
2.55
1.98
11.3
PTFE-C
596
50.5
128
311
0.54
2.77
2.31
12.1
588
52.2
127
311
0.46
2.82
2.26
12.7
X
% RSD
1.6
6.3
0.8
1.9
37
10
11
14
% of initial
101
62.7
80.4
83.8
0.08
3.4
1.4
3.4
SS-A
547
28.5
111
215
6.23
0.93
3.52
11.8
SS-B
565
30.9
121
196
6.80
0.74
3.30
10.3
SS-C
547
23.4
110
193
4.24
1.00
2.70
12.9
553
27.6
114
201
5.76
0.89
3.17
11.7
X
% RSD
1.9
13.9
5.3
5.9
23
15
13
11
% of initial
95
33
72
54
0.99
1.1
2.0
3.1
MDL
0.35
0.14
0.53
0.83
25
Previous Page
