Electrochemical Detection of Pb(II) Using A Pencil Electrode with Square Wave Anodic Stripping Voltammetry Method

• Main Authors: Muhammad Zamhari (Author), Muhamad Aditya Hidayah (Author), Gerda Pintoko Tunjungsari (Author), Endaruji Sedyadi (Author)
• Format: Book
• Published: Universitas Sultan Ageng Tirtayasa, 2022-07-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

<p class="Abstract"><span lang="EN-US">This work describes a simple and inexpensive Pb(II) determination by a pencil electrode using the square wave anodic stripping voltammetry (SWASV) method. This research was applied using a batch cell system on 10 mL of 0.1 M acetate buffer pH 4.5. The precision was performed with repeatability and reproducibility in Pb(II) concentrations of 0.</span><span lang="IN">2, </span><span lang="EN-US">0.</span><span lang="IN">4, </span><span lang="EN-US">0.</span><span lang="IN">6, </span><span lang="EN-US">and</span><span lang="EN-US">0.8</span><span lang="IN">µg mL^-1</span><span lang="EN-US">. Two linear ranges were obtained in the concentration of 0.1-1.0 and 2.0-8.0 µg mL^-1. This method offers a detection limit of 0.07 µg mL^-1 and a quantification limit of 0.24 µg mL^-1. The technique performed good repeatability (RSD= 7.28-9.53%) and good reproducibility (RSD=7.07-15.10%). The precisions are accepted according to the Association of Official Analytical Chemists (AOAC) standard (RSD repeatability <11% and RSD reproducibility <16% at a concentration of 1 µg mL^-1). The method offered high operational stability up to 18 measurements (RSD=4.6%). The technique performs acceptable results with low random error in determining Pb(II).</span></p>

Item Description

2502-4779
2502-4787
10.30870/educhemia.v7i2.14756