Electrochemical Sensor for o-Nitrophenol Based on β-Cyclodextrin Functionalized Graphene Nanosheets

Table 1

The recoveries of o-NP from water sample.

Sample	Added (μM)	Found (μM)	Recovery (%)	RSD (%)
1	10	10.12	101.2	2.6
2	20	19.48	97.4	3.2
3	50	49.93	99.9	4.4
4	80	81.84	102.3	2.5
5	100	98.61	98.6	3.5