Flow Injection Potentiometric Assay of Hexoprenaline in Its Pure State, Pharmaceutical Preparations, and Biological Samples

Table 6

Statistical treatment of data obtained for the determination of Hexoprenaline using Hx conventional electrodes in comparison with the official method.

	Hx-PTA		Hx-PMA
	Batch	FIA	Batch	FIA
Pure solutions
X±S.E.^∗	100.23±0.85	99.85±0.74	99.80±0.93	101.27±0.21
Relative error (%)	0.13	0.15	0.07	0.22
𝐹^3,3 value (9.27)^∗∗	2.56	2.98	3.45	4.21
Slope of regression line	0.998	0.986	0.995	0.978
Intercept of regression line	−0.087	−0.073	0.045	−0.062
Asmadol^0𝑥000𝑎𝑒
X±S.E.^∗	100.54±0.23	100.75±0.74	99.63±0.44	100.82±0.50
Relative error (%)	0.05	0.13	0.09	0.24
𝐹^3,3 value (9.27)^∗∗	3.78	4.12	2.68	2.49
Slope of regression line	0.999	0.988	0.986	0.993
Intercept of reg. line	0.012	−0.023	−0.031	0.009
Gynipral^0𝑥000𝑎𝑒
X±S.E.^∗	100.81±0.34	100.25±0.62	100.26±0.48	101.2±0.21
Relative error (%)	0.14	0.52	0.18	0.31
𝐹^3,3 value (9.27)^∗∗	4.57	3.51	2.88	3.69
Slope of regression line	0.992	0.989	0.996	0.985
Intercept of regression line	−0.091	0.036	0.018	0.042
Urine
X±S.E.^∗	100.54±0.41	99.48±0.56	100.56±0.45	100.12±0.34
Relative error (%)	0.09	0.12	0.24	0.06
𝐹^3,3 value (9.27)^∗∗	3.74	3.92	4.53	5.26
Slope of regression line	0.991	0.984	0.975	0.994
Intercept of regression line	0.029	−0.015	−0.026	−0.035
Plasma
X±S.E.^∗	100.2±0.85	99.8±0.74	99.8±0.93	100.36±0.54
Relative error (%)	0.18	0.14	0.25	0.32
𝐹^3,3 value (9.27)^∗∗	2.87	3.19	3.57	2.96
Slope of regression line	0.999	0.978	0.982	0.990
Intercept of regression line	−0.014	−0.026	0.034	0.091

X±S.E.^∗: average ± standard error.
^∗∗One tailed critical 𝐹-value. N.B.: for the official method (X ± S.E.) = 100.8±0.65.