Research Article

Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Tablets

Table 3

Effect of potential interfering species on the response of CH-CPE to 25 mg L−1 APAP in PBS.

Interfering speciesConcentration (mg L−1) of added species% variation in the SWV peak current (with = 100%)

Hydroquinone25
50
75
100

Para-aminophenol25
50
75
100

Dopamine25
50
75
100

Ascorbic acid25
50
75
100

Aspartic acid25
50
75

Glucose25
50
75