Disposable Carbon Dots Modified Screen Printed Carbon Electrode Electrochemical Sensor Strip for Selective Detection of Ferric Ions

Table 2

Percentage recovery of spiked Fe³⁺ ions for various water samples using C-Dots modified SPCE sensor strips and AAS.

Real sample	Sample Fe(III) (ppm)	Spiked Fe(III) (ppm)	Measured Fe(III) (ppm)	Recovery (%)	RSD (%)	Measured Fe(III) (ppm)	Recovery (%)	RSD (%)
			AAS			C-Dots modified SPCE sensor strip
Tap water	<0.3 [25]	10	9.0100	89.10	0.90	9.7018	94.02	5.16
Reverse osmosis water	ND	10	9.6215	96.21	0.10	9.7449	97.45	5.11
Mineral water	ND	10	8.6015	86.01	0.30	9.2336	92.34	6.85

ND = not detected.