2. AOACRIChemContMethods-2018Awards
S chneider & A ndersen : J ournal of AOAC I nternational V ol . 98, N o . 3, 2015 663
Table 3. Statistical summary of interlaboratory study data
Analyte added, µg/kg
Statistical outlier lab No. a
Mean concn, µg/kg
No of labs
No. of replicates b
Trueness (recovery, %)
RSD r
,
RSD R
, % HorRat
Analyte Matrix
s r
s R
%
10 c ,2 d None
MG Salmon
0.42 0.90
12 14
24 28
92.8 92.2
0.39 0.83
0.02 0.05 5.53 13.76 0.26 0.05 0.13 6.13 16.22 0.35
1.75
None
14
28
89.7
1.57
0.06 0.16 3.84 10.33 0.24
Incurred
None
14
28
1.48
0.10 0.36 6.46 24.06 0.56
12 d ,3 e ,11 e
Catfish
0.42
11
22
90.5
0.38
0.04 0.05 10.64 14.15 0.27
7 c ,12 d
0.90
12
24
77.8
0.70
0.04 0.23 5.31 32.61 0.68
12 d
1.75
13
25
79.4
1.39
0.09 0.36 6.79 25.87 0.60
Incurred
None
14
28
3.23
0.18 1.18 5.47 36.38 0.96
Shrimp
0.42
None
13
26
100.0
0.42
0.04 0.14 9.82 32.31 0.63
0.90
None
13
26
97.8
0.88
0.08 0.22 9.37 25.55 0.55
4 c
1.75
12
24
88.0
1.54
0.09 0.56 6.04 36.06 0.85
Inc:0.75
None
13
26
94.7
0.71
0.05 0.16 6.98 22.54 0.47
2 d ,10 e ,14 e
LMG Salmon
0.42
11
22
97.6
0.41
0.02 0.03 3.94 6.72
0.13
10 d
0.90
13
26
103.3
0.93
0.03 0.06 3.11 6.59
0.14
1.75
None
14
28
97.1
1.70
0.09 0.19 5.14 11.17 0.27
Incurred
None
14
28
0.81
0.03 0.12 3.57 14.25 0.31
12 d
Catfish
0.42
13
26
104.8
0.44
0.01 0.02 2.89 5.45
0.11
12 d , 5 e , 6 e
0.90
11
22
107.8
0.97
0.03 0.03 2.84 3.50
0.08
12 d 12 c 11 c
1.75
13
25
101.1
1.77
0.08 0.10 4.71 5.91
0.14
Incurred
13
26
2.39
0.05 0.16 2.20 6.81
0.17
Shrimp
0.42
13
26
102.4
0.43
0.01 0.04 3.22 8.98
0.17
0.90
None
14
28
106.7
0.96
0.04 0.07 3.69 7.07
0.16
1.75
None
14
28
101.7
1.78
0.07 0.16 4.14 8.81
0.21
4 e
Inc:0.76
13
26
99.8
0.76
0.03 0.05 3.64 6.22
0.13
2 d , 13 d
CV
Salmon
0.42
12
24
102.4
0.43
0.02 0.03 4.22 6.15
0.12
11 c 11 c 11 c 14 c
0.90
13
26
103.3
0.93
0.05 0.11 5.49 11.38 0.25
1.75
13
26
99.4
1.74
0.05 0.18 3.06 10.36 0.25
Incurred
13
26
0.03
0.01 0.05 42.14 159.6 2.10
Catfish
0.42
12
24
102.4
0.43
0.02 0.05 5.15 11.04 0.21
0.90
None
13
26
103.3
0.93
0.04 0.11 4.20 12.28 0.27
14 c
1.75
12
23
98.3
1.72
0.03 0.17 3.66 10.10 0.24
14 c , 6 c
Incurred
11
22
0.15
0.04 0.05 28.64 31.77 0.53
Shrimp
0.42
None
14
28
102.4
0.43
0.06 0.09 13.21 21.41 0.42
14 d 14 c
0.90
13
26
104.9
0.94
0.03 0.10 3.11 10.70 0.23
1.75
13
26
99.4
1.74
0.05 0.23 3.10 13.09 0.31
2 d , 8 c
Inc:0.85
12
24
97.6
0.83
0.02 0.07 2.30 8.70
0.19
2 d
LCV
Salmon
0.42
13
26
97.6
0.41
0.02 0.05 5.09 11.26 0.22
0.90
None 11 c , 3 c
14
28
102.2
0.92
0.05 0.09 5.50 9.48
0.21
1.75
12
24
102.8
1.80
0.04 0.15 2.19 8.10
0.20
Incurred
None
14
28
0.39
0.02 0.06 6.17 14.63 0.28
12 d 12 d
Catfish
0.42
13
26
109.5
0.46
0.02 0.05 4.60 10.34 0.20
0.90
13
26
107.8
0.97
0.03 0.08 3.38 8.04
0.18
4 c , 12 d
1.75
12
23
103.4
1.81
0.06 0.11 3.19 6.30
0.15
12 c
Incurred
13
26
4.04
0.16 0.40 4.01 9.98
0.27
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