Anodic stripping voltammetric determination of zinc at a 3-D printed carbon nanofiber-graphite-polystyrene electrode using a carbon pseudo-reference electrode

作者：Honeychurch Kevin C^*; Rymansaib Zuhayr; Iravani Pejman

来源：Sensors and Actuators B: Chemical , 2018, 267: 476-482.

DOI：10.1016/j.snb.2018.04.054

• 3D printed
• Stripping voltammetry
• Zinc
• Tap water

The application of a novel fully 3-D printed carbon nanofiber-graphite-polystyrene electrode has been investigated for the trace determination of Zn2+ by differential pulse anodic stripping voltammetry. The possibility of utilising a carbon pseudo-reference electrode was found to be successful. The effect of accumulation potential and time were investigated and optimised. Using an accumulation potential of -2.9 V (vs. C) and an accumulation time of 75 s a single sharp anodic stripping peak was recorded exhibiting a linear response from 12.7 mu g/L to 450 mu g/L. The theoretical detection limit (3 sigma) was calculated as 8.6 mu g/L. Using the optimised conditions a mean recovery of 97.8%, (%CV = 2.0%, n= 5) for a tap water sample fortified at 0.990 mu g/mL was obtained indicating the method holds promise for the determination of Zn2+ in such samples.

• 出版日期2018-8-15