Bismuth/Polyaniline/Glassy Carbon Electrodes Prepared with Different Protocols for Stripping Voltammetric Determination of Trace Cd and Pb in Solutions Having Surfactants

Abstract

To improve reproducibility, stability and sensitivity, a bismuth (Bi) thin film was coated on glassy carbon (GC) substrates which surfaces were modified with a porous thin layer of polyaniline (PANI) via multipulse potentiostatic electropolymerization to form Bi/PANI/GC electrodes (Bi/PANI/GCEs). The Bi/PANI/GCEs were used successfully for simultaneous detection and determination of Cd 2þ and Pb 2þ ions, and various parameters were studied with reference to square wave anodic stripping voltammetric (SWASV) signals. The experimental results depicted that the environment-friendly Bi/PANI/GCEs had the ability to rapidly monitor trace heavy metals even in the presence of surface-active compounds.

Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

“…The semilogarithmic nature of the calibration curve at the higher concentration range can be ascribed to saturation of the polymeric film with silver species. A similar behavior has been described earlier [58,59]. Plot (d) in Fig.…”

“…The results revealed that peak currents enhanced with time till 125 s and then remained constant, which may be due to the electrode saturation effects [58]. A preconcentration time of 100 s was used to prevent the saturation of the electrodes for higher silver ion concentration.…”

Development of a novel cyano group containing electrochemically deposited polymer film for ultrasensitive simultaneous detection of trace level cadmium and lead

“…Recently, modified electrodes based on incorporation of conducting polymer (CP) films have received considerable attention for the detection of trace heavy metals due to their superior electrical conductivities, good film formation capability and structural characteristics [20]. CP films deposited on electrode could enhance stripping responses toward detection of heavy metal [10].…”

Nanostructure Restoration of Thermally Reduced Graphene Oxide Electrode upon Incorporation of Nafion for Detection of Trace Heavy Metals in Aqueous Solution

“…These methods are highly reliable and sensitive, but they incur high cost and long processing time. Thus, anodic stripping voltammetry (ASV) becomes an alternative due to its high sensitivity, portability, realtime analysis and low cost [7].…”