A Novel Electrochemical Method for Protionamide Determination Based on Its Interaction with Alizarin Red S

Table 2

Results of the determination of PTH in synthetic samples ().

Sample	Coexisting substances	PTH (mg/L)		Recovery (%)
		Added	Found
1	L-Arginine, L-tyrosine, glucose, and Zn^2+	30.0	32.1	107.0
2	L-Tyrosine, L-glutamic acid, Zn^2+, and Cu^2+	30.0	30.8	102.7