CUPRAC Voltammetric Determination of Antioxidant Capacity in Tea Samples by Using Screen-Printed Microelectrodes

Table 2

Recovery rates for trolox standard addition to a tea sample.

Sample	Trolox added (×10^−4 mol·L^−1)		Trolox found (×10^−4 mol·L^−1)		Recovery (%)
	DPV	Spectrophotometry	DPV	Spectrophotometry	DPV	Spectrophotometry
Addition 1	2	2	1.954	2.059	97.692	102.941
Addition 2	3	3	3.023	2.864	100.769	95.466
Addition 3	4	4	4.077	3.882	101.925	97.059
Addition 4	5	5	4.958	5.118	99.160	102.353
Addition 5	6	6	6.130	6.235	101.166	103.922