Preparation and Evaluation of Acetabularia-Modified Carbon Paste Electrode in Anodic Stripping Voltammetry of Copper and Lead Ions

Table 3

Summary of concentrations of complex samples as suggested by various analytical methods.

Samples	Concentration of heavy metal detected in complex samples (ppm) (𝑛=2)
	AAS		Acetabularia-CPE
	Pb(II)	Cu(II)	Pb(II)	Cu(II)
Black soil	0.24±0.03	0.18±0.01	<0.20	1.53±0.11
NPK fertilizer 1	0.27±0.05	1.00±0.05	<0.20	1.35±0.02
NPK fertilizer 2	0.24±0.03	0.34±0.00	<0.20	1.51±0.12
Evaporated sea salt	0.17±0.01	0.32±0.00	1.36±0.10	0.49±0.06