Voltammetric Determination of Anethole on La₂O₃/CPE and BDDE

Table 8

Standard addition voltammetry of anethole in herbal matrix C (n = 3).

Electrode	Added (mg L^−1)	a ± SDa (µA/mg L^−1)	b ± SDb (µA)	Found ± SD (mg L^−1)	Recovery (%)	r
BDDE 3 mm	3.48	0.0939 ± 0.04	0.3460 ± 0.05	3.68 ± 0.70	105.87	0.9951
	6.96	0.0973 ± 0.03	0.6859 ± 0.03	7.05 ± 0.51	101.30	0.9982
	10.44	0.0963 ± 0.04	1.0814 ± 0.02	11.22 ± 0.61	107.51	0.9987
La2O3/CPE 3 mm	1.39	0.4306 ± 0.02	0.5995 ± 0.11	1.39 ± 0.19	100.02	0.9951
	2.78	0.435 ± 0.003	1.186 ± 0.001	2.728 ± 0.039	95.79	0.9999
	4.18	0.4409 ± 0.01	1.8124 ± 0.01	4.11 ± 0.07	98.45	0.9999