Table 1. Preparation and storage of QA coupons (g/coupon).
TNT
RDX
HMX
1060 75
863 23
790 62
Spike*
Coupons (n = 3)**
1070 58
863 42
873 25
Aluminum
(101%)†
(100%)
(111%)
1080 29
843 58
840 44
Rusted steel
(102%)
(98%)
(106%)
Storage
A. 7 days at 22 2C
1020 44
800 63
760 62
Aluminum
(96%)
(93%)
(96%)
1030 40
794 49
677 67
Rusted steel
(97%)
(92%)
(86%)
B. 14 days at 12 3C
958 36
773 30
730 30
Aluminum
(90%)
(90%)
(92%)
978 20
790 64
760 60
Rusted steel
(92%)
(92%)
(96%)
*Spike, aliquots added directly to acetone.
**Coupons from separate preparation batches.
†Percent recovery relative to spike concentration.
Table 2. QA coupon wiping experiments (g/coupon).
TNT
RDX
HMX
1060 75
863 23
790 62
Spike*
1. Filter paper "passive" (n = 3)
191 103
12.6 4.2
Aluminum
ND
(18%)†
(1.5%)
201 115
11.4 6.9
Rusted steel
ND
(19%)
(1.3%)
2. Filter paper "active" (n = 3)
211 176
113 86
20 27
Aluminum
(20%)
(13%)
(2.5%)
123 5.8
31 5.7
Rusted steel
ND
(12%)
(3.6%)
3. Q-tips (n=3)
407 95
243 71
100 17
Aluminum
(38%)
(28%)
(13%)
407 107
178 91
91 50
Rusted steel
(38%)
(21%)
(12%)
4. Cotton balls (n = 3)
507 121
453 61
405 49
Aluminum
(47%)
(52%)
(51%)
373 21
230 10
137 21
Rusted steel
(35%)
(27%)
(17%)
*Spike, aliquots added directly to acetone.
†Percent recovery relative to spike concentration.
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