Simultaneous Determination of Zn(II), Cd(II), Pb(II), and Cu(II) Using Differential Pulse Anodic Stripping Voltammetry at a Bismuth Film-Modified Electrode

Table 5

Concentration of Cu, Pb, Cd, and Zn determined using DP-ASV and GF-AAS for the water samples taken from the rivers.

River	DP-ASV (ppb)				GF-AAS (ppb)
	Cu	Pb	Cd	Zn	Cu	Pb	Cd	Zn
Cau Rao river	9.1 ± 2.5	13.3 ± 1.4	2.9 ± 0.7	12.5 ± 0.5	8.7 ± 1.5	14.5 ± 3.6	3.2 ± 0.5	13.7 ± 2.8
Kien Giang river	7.2 ± 3.9	17.2 ± 7.3	3.1 ± 0.9	7.8 ± 2.8	6.5 ± 2.1	18.8 ± 4.2	2.5 ± 0.6	7.3 ± 1.8
Nhat Le river	8.6 ± 3.1	22.5 ± 3.6	3.1 ± 0.4	6.2 ± 2.6	9.4 ± 1.2	21.8 ± 3.1	3.5 ± 0.7	6.9 ± 1.5
Gianh river	5.5 ± 1.8	11.2 ± 4.4	3.1 ± 1.6	7.9 ± 1.7	5.8 ± 0.9	10.2 ± 2.7	2.6 ± 0.5	8.7 ± 1.6
Son river	4.6 ± 2.1	7.3 ± 2.1	2.9 ± 0.9	5.5 ± 1.4	4.2 ± 0.3	7.1 ± 1.2	2.1 ± 0.6	5.6 ± 1.4

Number of experiments n = 3.