Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid Electrode

Table 4

Recovery results for HQ, CC, and RS in water samples.

Sample number	Detected (μM)			Added (μM)			Found (μM)			Recovery (%)
	HQ	CC	RS	HQ	CC	RS	HQ	CC	RS	HQ	CC	RS
1	ND	ND	ND	40	40	40	39.5	40.6	40.2	98.8	101.5	100.5
2	ND	ND	ND	30	30	30	30.8	31.0	29.8	102.7	103.3	99.3
3	ND	ND	ND	20	20	20	20.4	19.6	19.6	102.0	98.0	98.0
4	ND	ND	ND	10	10	10	10.4	10.6	10.2	104.0	106.0	102.0