Table 2.

Recoveries for the detection of Pb²⁺ in real water and 1% human blood serum (n = 3).

Sample	Spiked (nM)	Detected (nM)	RSD (%)	Recovery (%)
Tap water	5	4.93	1.73	98.6
	10	9.95	2.43	99.5
	100	101.47	4.33	101.47
River water	5	4.86	3.75	97.2
	10	10.02	2.10	100.2
	100	96.81	3.19	96.81
Human serum	5	5.03	2.41	100.6
	10	10.13	5.27	101.3
	100	100.73	4.13	100.73