Table 2.

Results of the Ag(I) recovery experiments in river water using the proposed biosensor.

Sample	Adding Ag(I)	DNAyme/SWNTs/FET	AAS	Recovery
	nM	nM	nM	%
1	-	1.23	1.17	105.12
	5	6.31		102.27
2	-	1.46	1.42	102.82
	5	6.35		98.91
3	-	0.98	1.06	92.45
	5	6.14		101.32