SERS Detection of Dopamine Using Label-Free Acridine Red as Molecular Probe in Reduced Graphene Oxide/Silver Nanotriangle Sol Substrate

Table 3 Results for the detection of dopamine hydrochloride in samples

Added (μmol/L)	Single value (μmol/L)	Average (μmol/L)	Recovery (%)	RSD (%)
0	28.4, 27.9, 25.9, 26.3, 27.5	27.2	-	3.9
25	54.3, 48.6, 53.5, 50.2, 55.1	52.3	103	5.3
75	100.0, 95.2, 98.4, 104.9, 106.1	100.9	98.3	4.5
200	231.2, 206.9, 232.0, 228.4, 229.2	225.5	99.2	4.7