Table 2. White phosphorus concentrations found after storage at room temperature for samples spiked
using a variety of methods.
WP soil concentration (g/g)
WP soil concentration (g/g)
a. Wet soils spiked with aqueous solution of WP and stored
e. Wet soil spiked with dissolved WP in mineral oil and stored
in ampoules.
nitrogen-purged ampoules.
Day 0
Day 7
Day 14
Day 237
Day 0
Day 14
Day 154
0.0796
0.0289
0.0015
not
0.0095
0.0042
0.0017
detected
0.0099
0.0069
0.0021
0.0901
0.0173
0.0022
not
0.0087
0.0040
0.0025
detected
Mean=
0.0094
0.0050
0.0021
0.0829
0.0116
0.0013
not
Std. Dev. =
0.0006
0.0016
0.0004
detected
RSD (%) =
6.5%
32.2%
19.0%
Mean=
0.0842
0.0193
0.0017
% of Day 0
54%
22%
Std. Dev. =
0.005
0.009
0.0005
RSD (%) =
6.4%
46.0%
27.5%
f. Wet sand and glass microbeads spiked with dissolved WP
% of Day 0
23%
2%
in mineral oil and stored in 22-mL vials.
Day 13
Day 13
b. Wet soil equilibrated seven days with solid WP then stored
Day 0
Beads
Sand
in vials.
Day 0
Day 14
Day 69
Day 244
0.00397
0.00377
0.00356
0.00429
0.00413
0.00362
35.1
34.4
17.8
0.004
0.00448
0.00448
0.00343
39.1
31.4
24.8
0.027
Mean=
0.00424
0.00413
0.00353
65.0
34.4
18.4
0.30
Std. Dev. =
0.0003
0.0004
0.0001
Mean=
46.4
33.4
20.3
0.11
RSD (%) =
6.1%
8.6%
2.7%
Std. Dev. =
16.2
1.7
3.9
0.16
% of Day 0
97%
83%
RSD (%) =
35.0%
5.2%
19.0%
149.2%
% of Day 0
72%
44%
0.24%
g. Wet glass microbeads spiked with dissolved WP in min-
eral oil and stored in 120-mL jars.
c. Wet soil equilibrated four days with solid WP then stored
Day 0
Day 14
Day 28
Day 76
in ampoules.
Day 0
Day 14
Day 64
Day 239
0.00419
0.00394
0.00364
0.00341
0.00418
0.00365
0.00262
0.00343
6.41
5.69
1.26
0.001
0.00403
0.00383
0.00378
0.00390
18.3
2.37
2.13
0.009
Mean=
0.00413
0.00380
0.00335
0.00358
18.7
7.78
0.17
not
Std. Dev. =
0.0001
0.0001
0.0006
0.0003
analyzed
RSD (%) =
2.1%
3.9%
19.0%
7.8%
Mean=
14.5
5.3
1.2
0.005
% of Day 0
92%
81%
87%
Std. Dev. =
7.0
2.7
1.0
0.006
RSD (%) =
48.3%
51.6%
82.9%
113.1%
Note: Also used aqueous solution and spiked samples in jars,
but no WP detected after three additions totaling 1.5 g
% of Day 0
36%
8.20%
0.03%
Ampoules--10 mL, flame-sealed
Vials--22 mL
d. Wet soil spiked with dissolved WP in mineral oil and
Jars--120 mL
stored in ampoules.
Day 0
Day 14
Day 189
0.00796 <0.00044
0.00049
0.00849
0.00435
<0.00044
0.00772
0.00255
<0.00044
Mean=
0.0081
0.0024
0.000457
Std. Dev. =
0.0004
0.0020
RSD (%) =
4.9%
79.9%
% of Day 0
30%
6%
5
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