AOAC SPIFAN Nutrients ERP (December 7, 2022)

Amino-07 (SLV) 10-2022 FOR ERP USE ONLY DO NOT DISTRIBUTE

Appendix H: Data—Recovery Table H1: Data recovery experiment day 1

Taurine (mg hg − 1 )

Sample a

Rep-1

Rep-1

Rep-1

blank unspiked

0.3 1.2 7.0

0.3 1.3 7.5

0.3 1.3 7.6

LFAN spiked low b blank spiked low b LFAN spiked middle c blank spiked middle c LFAN spiked high d blank spiked high d Concentration level

73.5

71.9

73.2

1.0 7.0

1.2 6.9

1.0 7.4

71.2

69.9

72.2

Recovery (%)

low

92.6 96.0

91.1

106.5

medium

105.6 102.4

98.5

high

102.8

101.1

a LFAN = low-fat adult nutritional powder b low spike = nominal concentration equivalent to 2 mg hg − 1 c medium spike = nominal concentration equivalent to 20 mg hg − 1 d high spike = nominal concentration equivalent to 200 mg hg − 1

Table H2: Data recovery experiment day 2

Taurine (mg hg − 1 )

Sample a

Rep-1

Rep-1

Rep-1

blank unspiked

0.3 1.3 1.1 6.9 7.0

0.3 1.4 1.1 6.9 6.8

0.4 1.4 0.9 7.7 7.2

LFAN spiked low b blank spiked low b LFAN spiked middle c blank spiked middle c LFAN spiked high d blank spiked high d Concentration level

70.4 71.6

69.4 68.6

71.3 69.4

Recovery (%)

low

92.3 93.9 97.9

95.8 95.7

102.1 100.5 102.2

medium

high

100.8

a LFAN = low-fat adult nutritional powder b low spike = nominal concentration equivalent to 2 mg hg − 1 c medium spike = nominal concentration equivalent to 20 mg hg − 1 d high spike = nominal concentration equivalent to 200 mg hg − 1