Preparation of Electrode Material Based to Bismuth Oxide-Attached Multiwalled Carbon Nanotubes for Lead (II) Ion Determination

Table 4

Concentrations of Pb²⁺ determined in river water media.

No.	1	2	3	4	5
Pb^2+ (μg/L)	4.3	4.7	4.7	4.4	4.8