Table. 2.

Detection of TET in different milk samples using Aptamer/AuNPs/RGO/PGE

Sample	Spiked value (M)	Determineda (M)	Recovery (%)	RSD (%)
Cow milk	1 × 10–9	(0.942 ± 0.057) × 10–9	94.2	6.5
	1 × 10–11	(0.961 ± 0.061) × 10–11	96.1	6.3
Sheep milk	1 × 10–9	(0.928 ± 0.071) × 10–9	92.8	7.6
	1 × 10–11	(0.984 ± 0.042) × 10–11	98.4	4.3
Goat milk	1 × 10–9	(0.971 ± 0.043) × 10–9	97.1	4.4
	1 × 10–11	(0.957 ± 0.081) × 10–11	95.7	8.4
Water buffalo milk	1 × 10–9	(1.021 ± 0.094) × 10–9	102.1	9.2
	1 × 10–11	(0.977 ± 0.010) × 10–11	97.7	10.2

^aMean of three measurements ± SD.