Electrochemically Pretreated Carbon Microfiber Electrodes as Sensitive HPLC-EC Detectors

Table 1

Main calibration parameters of the HPLC-EC.

	Intercept	Slope	𝑟^2	LOD (pg/mL)
Gallic acid	0.50998	0.36435	0.99913	45.3
Protocatechuic acid	0.95112	0.41324	0.99912	39.9
Gentisic acid	0.28650	0.35023	0.99995	47.1
4-Hydroxybenzoic acid	−0.00785	0.02738	0.99946	1205.2
Caffeic acid	0.22750	0.34307	0.99998	57.7