OMB Winter Mtg.-February 5-6, 2015

1102  J ulshamn et al . : J ournal of AOAC I nternational V ol . 96, N o . 5, 2013

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Table 1. Interlaboratory study results for As, Cd, Hg, and Pb Matrix x , mg/kg a n b s r , mg/kg c s R

, mg/kg d RSD r

, % e RSD R

, % f

r, mg/kg g

R, mg/kg h

HorRat i

As

Carrot

4 [0/8]

—

— — — —

—

—

Fish muscle Mushroom Wheat flour Simulated diet

1.6

11 [0/1] 9 [1/2] 2 [0/10] 5 [1/6] 12 [0/0] 12 [0/0] 13 [0/0] 13 [0/0] 13 [0/0] 12 [1/0] 13 [0/0] 11 [2/0] 12 [1/0] 4 [0/8] 11 [1/0] 10 [2/0] 3 [0/9] 8 [2/2] 12 [0/0] 11 [1/0] 13 [0/0] 13 [0/0] 12 [1/0] 7 [0/6] 13 [0/0] 13 [0/0] 13 [0/0]

0.086 0.014

0.14

5.4

9

0.24

0.4

0.6 1.2

0.057

0.016

24

28

0.038

0.044

— —

— — — — — — — —

— —

— —

Scampi Mussel

19.1

0.73 0.45

2.3 1.2

3.8 4.9

12 13

3.8 1.2

6.4 3.4

1.2 1.2

9.3

Cd

Carrot

0.3

0.008

0.027 0.095 0.033 0.006 0.044 0.012

2.7 6.9 3.8 6.4 2.6 2.8 2.5

9

0.023

0.076

0.47 0.67

Fish muscle Mushroom Wheat flour Simulated diet

0.87 0.46 0.03 0.52

0.06

11

0.17

0.27

0.017 0.002 0.013

7.2

0.049 0.084 0.037

0.092

0.4 0.8

18

0.24 0.12

8.4 2.8 9.9

0.48 0.63 0.67

Scampi Mussel

0.078

0.0022 0.0043

0.0062

0.032

1.7

0.17

0.12

0.47

Hg

Carrot

—

— — — —

—

—

Fish muscle Mushroom Wheat flour Simulated diet

0.0079

0.016 0.023

8.2

17

0.022 0.032

0,045 0.063

0.74

0.23

0.011

5

9.9

0.5

—

— — — —

—

—

0.0035

0.01

8.3 4.8 6.9 4.5 4.8 6.7 8.7 4.9 2.9 27

24 17 15

0.0099

0.029

1.1

Scampi Mussel

0.56 0.15

0.027

0.093 0.023

0.075 0.029

0.26

0.96 0.72

0.01

0.064

Pb

Carrot

0.086

0.0039

0.0091

11

0.011

0.025

0.45 0.56 0.63 0.57 0.59 0.57 2.2

Fish muscle Mushroom Wheat flour Simulated diet

2.1 1.5

0.1

0.17 0.14

8

0.29 0.27

0.47 0.39

0.098

9.5

0.013

0.0034

0.0063

50 11

0.0095

0.018 0.082

0.26 1.14

0.023 0.056 0.068

0.029

0.063

Scampi Mussel

0.11 0.19

9.3

0.16 0.19

0.3

2.4

8

0.53

a x = Mean. b n = Number of laboratories remaining after elimination of outliers/reporting