Table A7 (cont'd). First pesticide study--Effect of no treatment.
Analyte concentration (g/L) control C
Lindane Heptachlor Aldrin
Dieldrin
A
611
38.9
195
189
B
632
38.6
201
194
C
620
36.2
196
190
621
37.9
197
191
X
% RSD
1.7
3.9
1.6
1.4
Solution concentration (g/L)
Desorbed concentration (g/L)
after 24-hr sorption
after 24 hr
Material
Lindane Heptachlor Aldrin
Dieldrin
Lindane Heptachlor Aldrin Dieldrin
PVC-A
597
18.2
163
134
9.67
5.47
6.80
31.3
PVC-B
595
18.0
164
132
8.48
4.83
6.40
28.8
PVC-C
593
17.9
163
130
8.89
5.62
6.64
33.6
595
18.0
163
132
9.01
5.31
6.61
31.2
X
% RSD
0.3
0.8
0.4
1.5
6.7
7.9
3.0
7.7
% initial
95.8
47.8
82.8
69.1
1.5
14.0
3.3
16.3
PTFE-A
623
23.1
165
160
2.36
7.15
6.20
22.2
PTFE-B
624
25.0
165
161
2.59
6.88
7.16
23.7
PTFE-C
616
25.5
165
161
3.63
7.31
6.86
22.4
621
24.5
165
161
2.86
7.11
6.74
22.8
X
% RSD
0.7
5.2
0
0.4
24
3.1
7.3
3.6
% initial
100
65
84
84
0.5
19
3.4
12
SS-A
581
10.9
153
90.0
20.9
3.52
11.7
35.9
SS-B
594
11.8
156
102
15.8
3.99
9.25
35.2
SS-C
601
11.6
158
103
15.3
4.77
10.1
39.7
592
11.4
156
98
17.3
4.09
10.4
36.9
X
% RSD
1.7
4.1
1.6
7.4
18
15
12
6.6
% initial
95
30
79
51
2.8
11
5.2
19
MDL
0.88
0.62
0.83
0.61
24
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