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Pacquette & Thompson:
J
ournal of
AOAC I
nternational
V
ol.
98, N
o.
6, 2015
1709
Table 8. Collaborative study raw individual results for Se (mg/kg, as is)
a
Lab No.
Adult milk
powdered
Infant powdered
hydrolyzed milk
Adult powdered
low fat
Child powder
Infant elemental
powdered
Adult RTF high
protein
Adult RTF
high fat
1
a
0.182 0.203 0.183 0.182 0.208 0.211 0.193 0.210 0.123 0.112 0.045 0.073 0.087 0.098
2
0.236 0.215 0.227 0.244 0.304 0.291 0.214 0.205 0.210 0.220 0.109 0.107 0.135 0.143
3
0.225 0.230 0.234 0.238 0.299
b
0.245
b
0.235 0.250 0.253 0.252 0.107 0.0982
c
0.129
d
0.151
d
4
0.213 0.209 0.235 0.229 0.249 0.254 0.215 0.204 0.200 0.203 0.0893 0.0913 0.138 0.135
5
0.247 0.237 0.240 0.269
e
0.273 0.290 0.230 0.275
f
0.213
g
0.266g 0.0969 0.0989 0.129 0.137
8
0.227 0.232 0.243 0.247 0.273 0.273 0.218 0.222 0.206 0.216 0.0957 0.0919 0.134 0.134
9
0.235 0.230 0.234
h
0.230 0.282 0.254
i
0.219
j
0.244 0.225 0.224 0.100 0.106 0.135
k
0.135
10
0.204
l
0.252
l
0.237 0.231 0.245 0.256 0.195 0.215 0.216 0.199 0.0854 0.0849
m
0.122 0.125
11
0.215 0.215 0.236 0.235 0.263 0.261 0.210 0.207 0.201 0.202 0.0914 0.0913 0.136 0.136
SLV (
n
= 6)
0.225
0.245
0.272
0.220
0.214
0.0961
0.140
a
Other rejected data are indicated by footnotes below. The value in each cell is the mean of the duplicate analyses required by the method. The paired
results are the blind duplicates tested during the study.
b
Although rejected by Cochran’s test these data points were kept in the final statistical analysis, as the data appear extraordinarily tight; if excluded, the
RSD
R
falls to from 7.2 to 6.8%, and the HorRat from 0.37 to 0.35 for this product.
c
Rejected, 8.4% duplicate precision, no retest result supplied.
d
Although rejected by Cochran’s test these data points were kept in the final statistical analysis, as the data appear extraordinarily tight; if excluded, the
RSD
R
falls to from 5.0 to 4.1%, and the HorRat from 0.23 to 0.19 for this product.
e
Rejected, 7.5% duplicate precision, no retest result supplied.
f
Rejected, 8.8% duplicate precision, no retest result supplied.
g
Although rejected by Cochran’s test these data points were kept in the final statistical analysis as a conservative measure; if excluded, the RSD
R
falls
to from 9.3 to 8.2%, and the HorRat from 0.46 to 0.41 for this product.
h
Rejected, 15.1% duplicate precision, no retest result supplied.
i
Rejected, 12.7% duplicate precision, no retest result supplied.
j
Rejected, 8.4% duplicate precision, no retest result supplied.
k
Rejected, 8.7% duplicate precision, no retest result supplied.
l
Although rejected by Cochran’s test these data points were kept in the final statistical analysis, as the data appear extraordinarily tight; if excluded, the
RSD
R
falls to from 6.1 to 5.2%, and the HorRat from 0.31 to 0.26 for this product.
m
Rejected, 8.3% duplicate precision, no retest result supplied.
Table 9. Collaborative study individual results for Mo (mg/kg, as is)
a
Lab No.
Adult milk
powdered
Infant powdered
hydrolyzed milk
Adult powdered
low fat
Child powder
Infant elemental
powdered
Adult RTF high
protein
Adult RTF
high fat
1
a
0.273 0.271 0.154 0.158 0.535 0.517 0.234 0.234 0.139 0.131 0.161 0.155 0.205 0.194
2
0.317
b
0.366
b
0.217
c
0.194
c
0.633 0.618 0.304
d
0.272
d
0.173 0.167 0.163 0.161 0.210 0.210
3
0.375 0.383 0.222 0.220 0.598 0.597 0.267 0.255 0.204 0.211 0.205
e
0.203
e
0.207 0.202
4
0.309 0.311 0.199 0.190 0.566 0.580 0.273 0.275 0.183 0.177 0.157 0.159 0.211 0.204
5
0.321 0.320 0.206 0.204
f
0.606 0.592 0.290 0.280 0.185 0.188 0.164 0.166 0.203 0.203
8
0.301 0.304 0.192 0.192 0.564 0.586 0.272 0.269 0.171 0.170 0.154 0.155 0.195 0.192
9
0.312 0.314 0.195 0.195 0.583 0.592 0.275 0.275 0.169 0.172 0.157 0.155 0.193 0.196
10
0.341 0.334 0.225 0.228 0.592 0.593 0.299 0.289 0.199 0.203 0.160 0.156 0.195 0.195
11
0.327 0.330 0.207 0.211 0.613 0.599 0.288 0.287 0.181 0.181 0.167 0.167 0.213 0.213
SLV (
n
= 6)
0.294
0.184
0.565
0.261
0.160
0.154
0.193
a
Other rejected data are indicated by footnotes below. The value in each cell is the mean of the duplicate analyses required by the method. The paired
results are the blind duplicates tested during the study.
b
Rejected by Cochran’s test; if not excluded (to maintain eight laboratories’ data) RSD
R
is unchanged at 7.9%.
c
Although rejected by Cochran’s test these data points were kept in the final statistical analysis, as the paired data appear extraordinarily tight; if
excluded, the RSD
R
remains essentially unchanged.
d
Although rejected by Cochran’s test these data points were kept in the final statistical analysis, as the data appear extraordinarily tight; if excluded, the
RSD
R
falls to from 4.6 to 4.3%, and the HorRat from 0.24 to 0.22 for this product.
e
Rejected by Single Grubbs’ test; if not excluded (to maintain eight laboratories’ data) RSD
R
rises from 3.0 to 9.0%.
f
Rejected, 6.4% duplicate precision.
164