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Table 2 Recovery study

From: Sensitive and selective determination of vitamin B2 in non-alcoholic beverage and milk samples at poly (glutamic acid)/zinc oxide nanoparticles modified carbon paste electrode

Sample

Added (µM)

Found (µM) ± RSD (%)

n = 3

Recovery (%)

Malt Guinness

0

0.51 ± 3.01

–

 

0.2

 ± 0.78

94

 

0.5

0.95 ± 1.8

88

 

1

1.41 ± 0.52

90

 

2

2.41 ± 1.15

95

 

2.5

2.83 ± 1.63

92.8

Nido milk

0

0.39 ± 1.5

–

 

0.2

0.57 ± 1.04

90

 

0.5

0.85 ± 5.8

92

 

1

1.33 ± 3.5

94

 

2

2.4 ± 2.2

100.5

 

2.5

2.9 ± 1.5

100.4

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BMC Chemistry

ISSN: 2661-801X

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