A Cost‐Effective, Unmodified Platform for the Detection of Heavy Metals via Anodic Stripping Voltammetry at Nanomolar Level

Abstract

A new carbon based cost‐effective platform for stripping voltammetry has been reported. A Flat, self‐standing polymer composite chip electrode, having less than 500 micron thickness, has been developed using graphite and poly (methyl methacrylate) in 3:2 ratio. The dimensions and physical state of the chip is best suited for off‐laboratory applications. The utilization of such chip in detection of mercury, lead and cadmium by anodic stripping voltammetry has been tried individually as well as simultaneously over as‐prepared electrode without any modification. Under optimized conditions, limit of detection was found to be 200, 60, 350 nM (40, 15, 40 ppb) in individual analysis, whereas 250, 130, 400 nM (50, 25, 50 ppb) in simultaneous analysis for Hg (II), Pb (II) and Cd (II) ions respectively. The protocol has been extended for the estimation of aforesaid ions in the natural water samples.

Plastic Chip Electrode: An Emerging Multipurpose Electrode Platform

“…The bare PCE platform has been used for the detection of heavy metals, mercury, lead and cadmium individually as well as simultaneously by ASV [93] . On the bare electrode itself very good sensitivity, viz 600, 920 and 480 μg/μM, has been obtained for Hg(II), Pb(II) and Cd(II) respectively in individual runs in pH 4.5 acetate buffer.…”

Producing green hydrogen in an efficient way using a nexus of a waste-biomass derived catalyst and a cost-effective & scalable electrode platform

“…26 Furthermore, these electrodes have a very high potential for scalability in gas evolution reactions. [27][28][29][30][31][32][33] In this work, we used a large-scale PCE (42 cm 2 ) for hydrogen evolution reaction in an acidic medium using a two-electrode system and compared it with a small-scale PCE (0.196 cm 2 ).…”

Surface tailored graphite–polymer composite electrodes through cold plasma for electrochemical applications

“…[9][10][11] The plastic chip electrode (PCE) is one such polymer composite electrode developed by our group. [12] Having bulk conductivity coupled with self-standing flat and thin morphology, these electrodes helped in improving the efficiencies in sensing [13][14][15] electrocatalysis, [16] and electrometallurgy [17] applications. The PCE is fabricated by mixing its components in the solution phase followed by evaporation of the solvent under ambient conditions.…”