Modification of Carbon Paste Electrodes using Pyridine Functionalized SBA-15 and Multi-walled Carbon Nanotubes (MWCNTs) for Determination of Lead Ions in Real Aqueous Solutions

作者：Amani Vahid; Zhad Hamid Reza Lotfi Zadeh; Ebadi Amin; Sadeghi Omid; Najafi Ezzatollah; Tavassoli Najmeh^*

来源：Journal of New Materials for Electrochemical Systems, 2011, 14(1): 39-42.

• Carbon paste electrode
• Lead
• Modified SBA-I5
• MWCNTs
• Potentiometty

For determination of trace amounts of lead(II) ions, a carbon paste electrode was modified with functionalized SBA-15 and Multi-Walled Carbon Nanotubes. The electrode composition was graphite powder 59%, Paraffin 23%, modified SBA-15 14%, MWCNTs 4% (W/W). The linear range for lead(II) was 6.5 x 10(-8) to 2.0 x 10(-3) and the limit of detection was obtained 5.5 x 10(-8) mol L(-1). The lifetime of the electrode was 4 months and a fast response time was observed. The electrode was used for determination of trace amounts of lead in real samples.

• 出版日期2011-1