AOAC RI Chemical Cont. Methods-2018 Awards

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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