From: Development of new analytical methods for the determination of caffeine content in aqueous solution of green coffee beans
Methods
Liner range
R
LOD
LOQ
RSD (%)
FT-IR-ATR
(1–6) g/L
0.993
0.15 g/L
0.5 g/L
5.9
NIR
(1–5) g/L
0.994
0.3 g/L
1 g/L
9.3*
Fluorescence
(5.95 × 10−4–87.3 × 10−4) g/L
0.998
1.75 × 10−4 g/L
5.82 × 10−4 g/L
3.7