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A novel approach for in situ monitoring of Zn2+ in citrus plants using two-step square-wave anodic stripping voltammetry

Published online by Cambridge University Press:  23 April 2018

Jared Church
Affiliation:
Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida 32816, USA
Woo Hyoung Lee*
Affiliation:
Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida 32816, USA
*
Address all correspondence to Woo Hyoung Lee at Woohyoung.lee@ucf.edu
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Abstract

This study presents in situ detection of Zn2+ using a novel two-step square-wave anodic stripping voltammetry (SWASV)-based needle-type microsensor for citrus plant applications. A double-barrel bismuth/platinum (Bi/Pt) microelectrode was fabricated with a solid metal tip (~110 µm), which was durable enough to penetrate the thick skin of the citrus leaves and sensitive enough to detect ppb changes in Zn2+ concentration using SWASV. The microelectrode tip size was also determined to reduce mass transport limitation and improve limit of detection. Overall, the developed Bi/Pt microelectrode successfully measured Zn2+ concentrations within the vascular bundle of citrus plants.

Type
Research Letters
Copyright
Copyright © Materials Research Society 2018 

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