English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Two sensitive linear sweep and square wave anodic stripping voltammetry (LSand SW-) AdASV methods were optimized for trace determination of Pb+2 using carbon paste (CP) microelectrodes modified with mesoporous silica (SBA-15); mesoporous carbon (MC); and multi-walled carbon nanotube (MWCNT). Characterization of these modifiers were performed using XRD, TEM and BET. Lead (II) ion showed an anodic peak at -0.4 V in 0.1M HCl, using either bare or modified CP electrodes. A well-defined oxidation peak and high current response were observed using the MWCNT/CP electrode. Under optimal conditions (accumulation potential of -0.6 V for Ag/AgCl, and accumulation time of 15 min), a calibration curve ranging from 1x10-7 to 1x10-4 M was obtained for Pb+2 determination. A limit of detection (LOD) of 3×10-8 M Pb+2 was achieved using SW-AdASV at MWCNT/CP electrode. This (LOD) is much lower than that observed in most of the reported electrochemical methods. This method was successfully applied for trace determination of Pb+2 in various water samples without interferences from various organic and inorganic species. The results were statistically comparable to ICP-AES.

Anodic Stripping Voltammetry Determination of Lead ions using Highly Sensitive Modified Electrodes Based on Multi-walled Carbon Nanotube