From: On-line solid-phase enrichment coupled to packed reactor flow injection analysis in a green analytical procedure to determine low levels of folic acid using fluorescence detection
Concentration (20 ng/mL)
Recovery % a ( ± RSD)
Proposed method
Official method
Tablets
99.31 ± 0.30
99.56 ± 0.23
t-
0.29 (2.30) b
F-
1.74 (6.38) b
Recoveryc (%, ± RSD)
99.24 ± 0.34