Adsorptive Cathodic Stripping Voltammetric Determination of Cefoperazone in Bulk Powder, Pharmaceutical Dosage Forms, and Human Urine

Table 3

Accuracy and intermediate precision analysis for the proposed voltammetric techniques.

Number	Cefoperazone 0.03 µg/mL		Cefoperazone + sulbactam (0.03 µg/mL)
	DP-AdCSV	SW-AdCSV	DP-AdCSV	SW-AdCSV
1	101.4	101.2	99.4	97.3
2	99.5	97.9	101.2	98.4
3	99.1	100.8	101.6	98.9
4	99.6	99.9	100.1	100
5	100.4	100.4	100.3	100.6
6	101.1	98.3	101.2	101.6
Mean	100.2	99.8	100.6	99.5
SD	0.9	1.4	0.8	1.5
RSD (%)	0.9	1.4	0.8	1.5