Sensitive detection of Pb ions by square wave anodic stripping voltammetry by using iron oxide nanoparticles decorated zinc oxide nanorods modified electrode

2021 ◽  
pp. 125148
Author(s):  
Haslinda Abdul Hamid ◽  
Zainovia Lockman ◽  
Noorhashimah Mohamad Nor ◽  
Nor Dyana Zakaria ◽  
Khairunisak Abdul Razak
Keyword(s):  
Zinc Oxide ◽  
Iron Oxide ◽  
Modified Electrode ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanoparticles ◽  
Oxide Nanorods ◽  
Anodic Stripping ◽  
Pb Ions

Direct in situ measurement of dissolved zinc in the presence of zinc oxide nanoparticles using anodic stripping voltammetry

2014 ◽  
Vol 16 (11) ◽  
pp. 2536-2544 ◽  
Author(s):  
Chuanjia Jiang ◽  
Heileen Hsu-Kim
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Primary Particle ◽  
Zinc Concentration ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Oxide Nanoparticles ◽  
Anodic Stripping ◽  
20 Nm

Anodic stripping voltammetry can be used to measure the dissolved zinc concentration in aqueous suspensions of ZnO nanoparticles with primary particle diameters of 20 nm or larger.

scholarly journals Simultaneous determination of trace levels of Cd(II) and Pb(II) in tap water samples by anodic stripping voltammetry with 2-mercaptobenzothiazole modified electrode

2019 ◽  
Vol 9 (4) ◽  
pp. 231-242 ◽  
Author(s):  
Sophy Phlay ◽  
Weena Aemaeg Tapachai ◽  
Supunnee Daungthong ◽  
Puchong Worarattananurak ◽  
Pipat Chooto
Keyword(s):  
Mesoporous Silica ◽  
Modified Electrode ◽  
Tap Water ◽  
Anodic Stripping Voltammetry ◽  
Optical Emission ◽  
Standard Addition ◽  
Stripping Voltammetry ◽  
Emission Spectrometry ◽  
In Situ Preparation ◽  
Anodic Stripping

Glassy carbon electrode (GCE) modified by 2-mercaptobenzothiazole (MBT), mesoporous silica (Meso) and bismuth was developed to determine Cd(II) and Pb(II) simultaneously by square wave anodic stripping voltammetry (SWASV). In-situ preparation was found to work best in optimum conditions of acetate buffer pH 6, accumulation potential of -1.1 V, deposition time of 300 s and scan rate of 200 mV/s. SW peaks revealed the linear range of 5-50 µg/L Cd(II) and 5-50 µg/L Pb(II). LOD and LOQ for Cd(II) and Pb(II) were determined as 0.56, 0.80, 1.87 and 2.66 µg/L, respectively. The interaction of metals with bismuth and MBT, as well as higher surface area due to mesoporous silica, support beneficial performance of the modified electrode. Insignificant interferences from other regularly present metal ions were found. With SRM1640 standard, the SWASV results are found comparable to those obtained by inductive coupled plasma optical emission spectrometry (ICP-OES). The method was used to analyze the metals in tap water by standard addition method with the satisfactory recovery of 100.7 % for Cd(II) and 100.8 % for Pb(II).

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