Research Article
Detection of Cu2+ in Water Based on Histidine-Gold Labeled Multiwalled Carbon Nanotube Electrochemical Sensor
Figure 4
DPASV of detection of copper ions based on modified electrodes ( = 10ā8āmol/L). [(A) bare GCE; (B) AuNPs/MWCNT-SH/AuNPs/GCE; (C) histidine/AuNPs/MWCNT-SH/AuNPs/GCE; and (D) histidine/AuNPs/GCE].