Ultrasensitive and Selective Electrochemical Detection of Dopamine Based on CuO/PVA Nanocomposite-Modified GC Electrode

Table 2

Determination of DA in human urine samples using the CuO/PVA/GCE sensor (practical application of the proposed method ).

Urine sample	Added (μM)	Found (μM)	RSD (%)	Recovery (%)
A	5	4.13	2.69	98.50
B	5	4.54	2.45	98.89
C	5	4.13	2.39	98.79
D	5	4.49	1.94	99.43
E	5	4.67	2.23	99.63