Research Article
A Novel Electrochemical Method for Protionamide Determination Based on Its Interaction with Alizarin Red S
Table 1
Effect of coexisting substances on the determination of 3.0 mg/L PTH.
| | Coexisting substances | Concentration (mg/L) | Relative error (%) | Coexisting substances | Concentration (mg/L) | Relative error (%) |
| | Glucose | 5.0 | 3.49 | Ca2+ | 5.0 | 3.16 | | L-Arginine | 5.0 | −2.78 | Cu2+ | 5.0 | 2.50 | | L-Tyrosine | 5.0 | 2.95 | Zn2+ | 5.0 | −1.60 | | L-Glutamic acid | 5.0 | 3.38 | Mn2+ | 5.0 | −2.58 | | HSA | 5.0 | 5.72 | Mg2+ | 5.0 | −2.27 |
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