SPIFAN Nutrients ERP Book_9-29-15

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Table 4. Demonstration of reproducibility for several analysts on 9 different days using one ICP-OES NIST SRM 1849a; Infant/Adult Nutritional Formula mg/kg ᵃ

Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Day 9 Average RSD, %

Analyte

5190 5124 5185 5118 5207 5198 5063 5053 5198 19,53 19,83 19,30 19,31 19,63 20,08 20,05 20,14 19,39 167,8 166,1 166,1 167,6 167,9 169,7 166,3 164,5 167,4 9438 9506 9388 9414 9457 9513 9822 9545 9441 1570 1552 1585 1574 1585 1573 1553 1529 1577 48,13 47,96 48,02 49,61 48,38 49,41 49,07 48,43 49,63 4179 4248 4209 4229 4220 4237 4296 4354 4230 4086 4137 4073 4024 4109 4144 4093 4068 4042 147,3 145,3 146,4 146,2 146,7 148,0 149,8 145,2 146,9

5148 19,69 167,0 9502 1566 48,74 4244 4086 146,8 4189 3,53 57,01 5938 488,3 1,12 1829 2355 44,32

1,2 1,7 0,9 1,4 1,2 1,4 1,2 1,0 1,0 0,7 2,5 1,9 1,5 0,8 2,6 1,3 1,2

Ca Cu Fe

K

Mg Mn

Na

P

Zn

Laboratory control sample: IF powder milk based; Infant Food mg/kg b

4219 4162 4186 4188 4203 4215 4146 4153 4228

Ca Cu Fe

3,68

3,46

3,47

3,52

3,56

3,61

3,39

3,56

3,47

55,91 56,67 56,01 58,63 56,98 57,11 57,88 55,51 58,40 5909 5791 5845 5929 5970 6010 6070 6024 5895 491,0 483,8 494,6 491,4 492,7 485,2 485,6 483,6 487,1

K

Mg Mn

1,07

1,12

1,11

1,13

1,11

1,11

1,15

1,11

1,17

Na 1818 1801 1831 1821 1831 1846 1840 1877 1802 2353 2317 2338 2329 2374 2402 2376 2371 2339 46,01 44,91 43,67 44,52 44,35 43,57 43,57 43,28 45,04 2,0 ᵃ Reference values, mg/kg: Ca = 5253 ± 51; Cu = 19.78 ± 0.26; Fe = 17.,6 ± 2.9; K = 9220 ± 110; Mg = 1648 ± 36; Mn = 49.59 ± 0.97; Na = 4265 ± 83; P = 3990 ± 140; Zn = 151.0 ± 5.6. b Interlab values, mg/kg: Ca = 4207 ± 6%; Cu = 3.51 ± 10%; Fe = 56.7 ± 10%; K = 5846 ± 6%; Mg = 481.9 ± 6%; Mn = 1.13 ± 10%; Na = 1811 ± 6%; P = 2408 ± 6%; Zn = 43.7 ± 10%, P Zn

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