Number

of the sample

Concentration introduced (µM)

Concentration found (µM)

Recovery rate ± SD

1

1.98

1.707

86.25 ± 0.92

2

3.309

3.02

91.27 ± 0.51

3

5.95

5.78

97.17 ± 0.72

4

11.89

11.68

98.25 ± 0.91

5

13.87

13.56

97.80 ± 0.14