3 years ago

Construction and characterization a non-amalgamation voltammetric flow sensor for online simultaneous determination of lead and cadmium ions

Construction and characterization a non-amalgamation voltammetric flow sensor for online simultaneous determination of lead and cadmium ions
A non-amalgamation electrochemical flow sensor is proposed for application in the continuous flow simultaneous determination of the Cd2+ and Pb2+ ions by Differential Pulse Anodic Stripping Voltammetry (DPASV). The sensor was simply constructed by immobilization of a uniform and homogeneous composite film of MWCNTs and poly alizarin red S (MWCNTs-PARS) on the surface of a glassy carbon electrode (MWCNTs-PARS/GCE) via in situ electro-polymerization from a homogeneous suspension of MWCNTs and alizarin red S (ARS). The trapping of metals through the Anodic Stripping Voltammetry (ASV) electrochemical accumulation step is based upon a complex formation instead of the conventional amalgamation process. Under the optimum conditions, well-defined sharp stripping peaks were observed in the determination of the Cd2+ and Pb2+ ions. Linear responses were obtained for these ions in the ranges of 5.0–160.0 and 5.0–150.0μgL−1, respectively, and with the detection limits of 0.43 and 0.47μgL−1 for them, respectively. MWCNTs-PARS/GCE was successfully applied for the simultaneous determination of these ions in soil, wastewater, and tap water samples with satisfactory results. The results obtained were in agreement with those obtained by the AAS method.

Publisher URL: www.sciencedirect.com/science

DOI: S0925400517311188

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.