Sensitive Determination of Terazosin in Pharmaceutical Formulations and Biological Samples by Ionic-Liquid Microextraction Prior to Spectrofluorimetry

Table 4

Comparison of the proposed approach with other reported methods for determination of terazosin.

Method	Sample	LOD (μg L^−1)	R.S.D. (%)	LR (μg L^−1)	References
Spectrofluorimetry	Serum, urine	210	2.5	Up to 3486.9	[4]
X-ray fluorescence spectrometry	Drug	732	—	732–843000	[5]
HPLC with fluorescence detection	Plasma	0.25	<7	Up to 100	[6]
HPLC with electrospray ionization mass spectrometry detection	Plasma	0.0625	—	—	[7]
Square-wave adsorptive cathodic stripping voltammetry	Plasma, drug	0.0058	<1.1	0.39–11.62	[8]
ionic-liquid microextraction spectrofluorimetry	Urine, plasma, drug	0.027	2.4	0.1–115	This work

LOD: limit of detection, LR: linear range, R.S.D.: relative standard deviation.