Single-Walled-Carbon-Nanotube-Modified Pyrolytic Graphite Electrode Used as a Simple Sensor for the Determination of Salbutamol in Urine

Table 1

Determination of salbutamol in different pharmaceutical preparations using SWNT/EPPGE.

Tablet	Amount labeled (mg)	Amount detected^a (mg)	Error %
Salbetol-2	2.00	2.05	+2.5%
Asthalin-2	2.00	2.04	+2.0%
Asthalin-4	4.00	3.90	−2.5%
Ventorlin-8	8.00	7.99	−0.12%
Eto-Salbetol	2.00	1.99	– 0.5%

^aThe RSD value for the determination of salbutamol was less than ±2.2% for 𝑛=3.