Trace Detection of Pb(II) using Square Wave Anodic Stripping Voltammetry with Stainless Steel Electrodes

Sendika Harrista (State Islamic University Sunan Kalijaga Jalan Marsda Adisucipto, Catur Tunggal, Daerah Istimewa Yogyakarta, 55281, Indonesia)
Muhammad Zamhari (State Islamic University Sunan Kalijaga Jalan Marsda Adisucipto, Catur Tunggal, Daerah Istimewa Yogyakarta, 55281, Indonesia)
Adinda Fara Aulia (State Islamic University Sunan Kalijaga Jalan Marsda Adisucipto, Catur Tunggal, Daerah Istimewa Yogyakarta, 55281, Indonesia)
Safina Nur Faizah (State Islamic University Sunan Kalijaga Jalan Marsda Adisucipto, Catur Tunggal, Daerah Istimewa Yogyakarta, 55281, Indonesia)
Tawatchai Kangkamano (Thaksin University 140 Kanjanavanich Rd, Khao Rup Chang, Mueang Songkhla District, Songkhla 90000, Thailand)

ALCHEMY Jurnal Penelitian Kimia
Vol 20, No 2 (2024): September

Lead (Pb(II)) is well known as a dangerous environmental contaminant that harms public health worldwide. Early Pb(II) detection before release into the water system is important. This work describes an inexpensive Pb(II) determination using 5 mm diameter stainless steel rod type 304 as a working electrode. Using a batch system, the research employed 10 mL of 0.1 M acetate buffer at pH 4.5. The best operation was at a deposition potential of -1.2V for 300 s. It provides a linear range in the concentration range of 0.075 – 1 µg/mL Pb(II) (r = 0.994). The limit of detection (LOD) and limit of quantification (LOQ) of Pb(II) were at 0.057 µg/mL and 0.189 µg/mL, respectively. Repeatability and reproducibility were expressed in the relative standard deviation range of 1.26-3.71% in the testing a Pb(II) concentration range of 0.2-1.0 µg/mL and 5.32% in testing a Pb(II) concentration of 0.4 µg/mL. A very low-cost stainless-steel electrode proposed a high operational stability up to 10 measurements with RSD of 4.39%.