Table 3.

Limit of detection (LOD), limit of quantification (LOQ), and calibration curve parameters for all analytes.

Compound	LOD (ng/μL)	LOQ (ng/μL)	R2	Linearity range (ng/μL)
Gallic acid	0.05	0.1	0.9991	0.1- 10
Protocatechuic acid	0.01	0.02	0.9967	0.025-25
Gentisic acid	0.008	0.015	0.9993	0.025-25
4-OH-benzoic acid	0.05	0.1	0.9972	0.1-5
Vanillic acid	0.1	0.2	0.9999	0.2-50
Caffeic acid	0.04	0.085	0.9975	0.1-5
Syringic acid	0.05	0.1	0.9997	0.1-50
p-Coumaric acid	0.01	0.025	0.9982	0.05-2.5
Ferulic acid	0.01	0.025	0.9997	0.025-5
Salicylic acid	0.01	0.02	0.9986	0.02-0.7
Veratric acid	0.4	0.7	0.9977	0.5-25
Sinapic acid	0.007	0.025	0.9987	0.025-5
m-Coumaric acid	0.02	0.05	0.9994	0.05-2.5
Rosmarinic acid	0.005	0.01	0.9985	0.025-25