AOAC Methods for Review in Codex STAN 234_11-2018

AOAC Official Methods Listed in CXS 234 for Milk and Milk Products

162

Table 12. Comparison of results from the AAS determinations with those from the ICP/ICP–MS determinations after microwave digestion a

Parameter

Minced fish

Wheat bran

Milk powder

Livers

Mushroom, NFA Simulated diets E and F, NFA Bovine Muscle, NIST 8414

Pb

Mean GFAAS ± S R b Mean ICP–MS ± S R

0.0049 ± 0.0188 c

0.476 ± 0.129

0.150 ± 0.091

0.130 ± 0.055

1.62 ± 0.26

0.394 ± 0.098

0.398 ± 0.086

0.431 ± 0.048

0.091 ± 0.012

0.0071 ± 0.0016

0.122 ± 0.042

1.28 ± 0.13

0.315 ± 0.030

0.415 ± 0.068

Agreement d

Y e

N f

Y

Y

N

Y

Y

Cd

0.171 ± 0.022 –0.000038 ± 0.0032 c

Mean GFAAS ± S R Mean ICP–MS ± S R

0.211 ± 0.035

0.164 ± 0.034

0.482 ± 0.053

0.764 ± 0.105

0.0124 ± 0.0034

0.183 ± 0.013

0.175 ± 0.018

0.0041 ± 0.0029

0.167 ± 0.021

0.489 ± 0.052

0.742 ± 0.059

0.0179 ± 0.0086

Agreement

Y

Y

N

Y

Y

Y

Y

Zn

Mean FAAS ± S R Mean ICP g ± S R

4.50 ± 0.41

73.5 ± 3.5

35.3 ± 3.3

182 ± 9

56.9 ± 3.0

47.8 ± 2.5

147 ± 3

J ORHEM & E NGMAN : J OURNAL OF AOAC I NTERNATIONAL V OL . 83, N O . 5, 2000 1201

4.25 ± 0.59

79.1 ± 2.2

35.4 ± 3.5

189 ± 5

58.1 ± 6.8

50.4 ± 9.4

150 ± 20

Agreement

Y

N

Y

Y

Y

Y

Y

Cu

Mean FAAS ± S R Mean ICP g ± S R

0.241 ± 0.094

10.1 ± 0.8

108 ± 4

37.7 ± 2.2

63.4 ± 1.9

2.63 ± 0.17

0.263 ± 0.032

10.8 ± 0.8

107 ± 9

38.1 ± 1.5

64.0 ± 4.3

2.99 ± 0.35

Agreement

Y

Y

Y

Y

Y

Y

Fe

Mean FAAS ± S R Mean ICP g ± S R

7.42 ± 1.27

123 ± 10

0.6 ± 8.1

487 ± 31

105 ± 8

303 ± 18

75.0 ± 8.1

7.36 ± 1.28

130 ± 5

6.17 ± 9.20

479 ± 21

105 ± 8

305 ± 13

74.4 ± 7.4

Agreement

Y

Y

Y

Y

Y

Y

Y

a Results in mg/kg dry wt (minced fish, mg/kg fresh wt). b S R = reproducibility standard deviation. c Result below the detection limit. d Agreement is based on 2-tailed t -test, P = 0.05.

e Y = yes. f N = no. g Both ICP–AES and ICP–MS.

10/9/2018