Publication: Determination of Fe<sup>3+</sup> in Water Samples by Reduced Schiff Base Ligand
0
0
Issued Date
2024-07-01
Resource Type
eISSN
29850290
Scopus ID
2-s2.0-105005580218
Journal Title
Science Essence Journal
Volume
40
Issue
2
Start Page
12
End Page
25
Rights Holder(s)
SCOPUS
Bibliographic Citation
Science Essence Journal Vol.40 No.2 (2024) , 12-25
Suggested Citation
Doungchandeng S., Apiratikul N., Sungwienwong I., Srivilai P., Tongraung P. Determination of Fe<sup>3+</sup> in Water Samples by Reduced Schiff Base Ligand. Science Essence Journal Vol.40 No.2 (2024) , 12-25. 25. Retrieved from: https://hdl.handle.net/20.500.14740/21026
Author's Affiliation
Corresponding Author(s)
Other Contributor(s)
Abstract
This research presents the development of a method for the quantification of Fe3+ using a reduced Schiff base ligand, which was synthesized via a simple two-step process with a high yield of 84%. The quantification of Fe3+ was analyzed using UV-Visible spectrophotometry. The selective binding of ligand with various cations (Fe3+, Cr3+, Pb2+, Co2+, Cu2+, Zn2+, Cd2+, Hg2+, Mn2+, Ni2+, Fe2+, Mg2+, Ag+, Na+, K+) was investigated. The results revealed that the reduced Schiff base ligand specifically formed a complex with Fe3+, indicated by a new absorption peak in the 350–400 nm range due to ligand-to-metal charge transfer (LMCT). In contrast, other cations induced no significant spectral changes. Quantitative studies of Fe3+ showed that the absorbance at 380 nm increased linearly with Fe3+ concentration, displaying a correlation coefficient (R2) of 0.9994 within the Fe3+ concentration range of 2.00 × 10–6 to 1.00×10–3 M. The method exhibited a limit of detection (LOD) of 1.22×10–6 M and a limit of quantification (LOQ) of 2.03×10–5 M. The reduced Schiff base ligand was successfully applied for Fe3+ quantification in real water samples, corresponding to the results obtained by inductively coupled plasma optical emission spectroscopy (ICPOES).