Table 2.

Results of Pb²⁺ and Cu²⁺ detection in water samples.

Water Samples	Pb2+		Cu2+
	LOD (M)	R2	LOD (M)	R2
Tap water	1.6 × 10−4	0.9933	1.5 × 10−4	0.9811
Drinking water	1.1 × 10−4	0.9923	9.3 × 10−5	0.9868

* R²: Correlation coefficient.