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494 

M

astovska

et al

.

:

J

ournal of

AOAC I

nternational

V

ol

. 98, N

o

. 2, 2015

Table 4. Collaborative study results (in µg/kg) obtained by the participating laboratories in blind duplicates fortified at the

mid PAH level in shrimp

Laboratory No.

PAH

Sample ID

1

2

3

4

5

6

7

8

9

1,7-DMP SFC S9

28.6

17.4

26.2

14.9

21.6

21.0

20.3

23.9

25.1

SFC S14

27.9

23.8

28.4

14.9

23.3

21.1

22.4

21.8

26.6

1-MN

SFC S9

84.6

111.5

89.1

59.8

83.7

70.1

72.8

75.4

56.9

SFC S14

99.7

101.4

101.7

66.1

85.9

74.9

81.9

83.3

67.6

1-MP

SFC S9

26.8

17.8

29.6

18.6

24.5

24.7

23.7

26.1

27.1

SFC S14

26.6

23.9

30.8

18.5

25.6

25.0

26.5

29.2

24.2

2,6-DMN SFC S9

80.0

a

46.5

40.8

40.3

38.5

33.4

38.1

31.3

23.4

SFC S14

102.1

a

43.2

42.9

51.7

37.8

31.7

42.3

27.0

36.8

6-MC

SFC S9

27.0

33.9

37.2

30.0

30.9

30.5

30.7

37.5

33.6

SFC S14

24.5

33.0

38.7

30.2

31.3

30.8

33.6

32.0

33.2

Ant

SFC S9

9.2

10.8

13.4

9.4

9.8

9.8

9.3

11.1

11.8

SFC S14

8.3

10.4

15.2

9.5

9.8

9.7

10.8

12.2

10.0

BaA

SFC S9

13.3

17.0

16.2

14.3

14.4

14.0

14.1

17.0

15.4

SFC S14

12.4

16.2

15.5

14.3

14.6

14.2

15.6

15.2

15.9

BaP

SFC S9

4.5

5.7

5.1

4.9

4.7

4.7

4.7

4.5

5.5

SFC S14

3.9

5.2

5.9

4.9

4.7

4.7

5.1

5.3

5.0

BbF

SFC S9

8.8

10.8

10.6

9.8

9.3

9.2

9.4

10.2

10.1

SFC S14

8.8

10.5

11.1

9.7

9.4

9.4

10.1

10.0

9.5

BghiP

SFC S9

4.6

5.6

5.8

4.9

4.6

4.7

4.6

4.5

11.5

b

SFC S14

4.3

5.3

5.9

4.8

4.6

4.8

4.9

5.1

2.5

b

BkF

SFC S9

7.9

8.6

9.5

7.7

7.7

8.0

7.6

7.6

8.5

SFC S14

6.5

8.6

9.6

8.0

7.7

8.1

8.3

8.2

8.3

Chr

SFC S9

46.8

52.4

55.8

48.4

48.2

47.7

47.8

57.6

54.7

SFC S14

42.8

50.2

57.8

48.5

49.1

48.1

52.3

51.4

53.1

DBahA

SFC S9

4.2

6.1

5.1

5.0

4.8

4.9

4.7

6.0

4.3

SFC S14

4.0

5.3

5.7

5.0

4.8

5.0

5.2

5.4

4.9

Fln

SFC S9

14.8

15.8

16.6

14.4

14.6

14.8

14.0

16.9

17.0

SFC S14

13.3

15.7

17.2

14.6

14.7

14.4

15.5

15.4

16.4

Flt

SFC S9

21.7

26.6

27.5

24.6

23.8

23.5

23.4

26.7

29.1

SFC S14

19.9

26.7

28.9

24.6

24.0

23.2

26.7

25.6

25.0

IcdP

SFC S9

4.4

5.7

4.5

5.0

4.8

5.3

4.8

5.1

6.7

SFC S14

4.1

5.4

5.5

5.0

4.8

5.1

5.2

5.4

5.1

Naph

SFC S9

86.2

88.1

86.8

75.9

80.2

71.9

79.4

75.3

90.1

SFC S14

104.3

86.4

90.6

73.6

80.6

76.2

90.2

80.2

97.8

Phe

SFC S9

46.8

50.9

54.2

47.6

48.9

47.9

46.5

48.7

51.3

SFC S14

44.7

50.3

56.2

47.8

50.0

47.4

51.3

50.7

53.5

Pyr

SFC S9

36.5

41.8

45.3

39.3

39.2

38.6

38.2

38.8

43.6

SFC S14

32.6

42.0

46.6

39.4

39.7

38.5

42.3

41.5

42.1

a

Outliers removed by the Cochran test.

b

Outliers removed by single Grubbs’ test.