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

Table 4

Determination of hexoprenaline employing the different Hx-PTA electrodes applying the standard additions method under batch conditions.

		Hx-PTA (I)		Hx-PTA (II)		Hx-PTA (III)		Hx-PTA (IV)		Hx-PTA (V)
Sample	Taken	Recovery	RSD^(b)	Recovery	RSD^(b)	Recovery	RSD^(b)	Recovery	RSD^(b)	Recovery	RSD^(b)
	^(a)/mg	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)	(%)
Pure solutions	5.186	98.7	0.19	99.5	0.15	99.7	0.25	99.2	0.39	98.7	0.24
	51.860	99.5	0.15	99.7	0.21	99.4	0.29	98.6	0.24	98.3	0.35
	518.60	99.8	0.19	100.2	0.35	99.9	0.31	99.5	0.35	99.0	0.18
Asmadol^0𝑥000𝑎𝑒	5.186	98.8	0.09	98.5	0.30	97.8	0.24	99.6	0.28	100.0	0.31
	51.860	100.2	0.36	99.3	0.19	98.4	0.19	100.0	0.44	100.6	0.46
	518.60	101.4	0.24	99.9	0.28	99.3	0.35	100.5	0.37	101.6	0.52
Gynipral^0𝑥000𝑎𝑒	5.186	98.5	0.18	99.2	0.37	98.6	0.41	100.1	0.19	99.6	0.22
	51.860	100.5	0.16	100.1	0.19	99.8	0.33	99.8	0.25	98.8	0.36
	518.60	99.9	0.21	100.9	0.26	100.4	0.27	99.4	0.42	100.4	0.48
Urine	5.186	97.5	0.15	100.0	0.37	100.2	0.22	99.6	0.17	98.9	0.21
	51.860	98.6	0.19	100.6	0.42	100.1	0.34	100.2	0.26	97.6	0.38
	518.60	99.8	0.23	101.2	0.36	101.6	0.16	101.5	0.37	99.4	0.29
Plasma	5.186	98.0	0.41	99.3	0.29	98.6	0.33	99.4	0.36	97.5	0.36
	51.860	98.6	0.25	98.7	0.17	99.2	0.24	98.5	0.45	98.3	0.45
	518.60	98.8	0.22	99.6	0.23	100.4	0.44	97.3	0.38	98.6	0.40

^(a)Taken mg per 50 mL.
^(b)Five determinations.