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Quick and Green Procedure for the Quantification of Chromium in an Anionic Surfactant System

Authors :
Muhammad Aslam Korai
Muhammad Bachal Korai
Maqsood Ahmed Mirbahar
Ghulam Abbas Shar
Gul Afshan Soomro
Akhtiar Ahmed Kalhoro
Source :
Kemija u Industriji, Vol 73, Iss 5-6, Pp 207-214 (2024)
Publication Year :
2024
Publisher :
Croatian Society of Chemical Engineers, 2024.

Abstract

This study aims to establish a facile, user-friendly, accurate, and repeatable spectrophotometric detection method for Cr(III) ions in trace quantities. The method utilises reagent 1-nitroso-2-naphthol (NNPh) in a sodium dodecyl sulphate (SDS) 1.0 % micellar solution, replacing the old, time-consuming, and expensive solvent extraction method that employs hazardous solvents such as carbon tetrachloride and chloroform. SDS surfactant is used to solubilise indissoluble chelates, making the proposed technique easy, rapid, and environmentally friendly. The established method exhibits an improved linear calibration range, sensitivity, limit of detection, and selectivity compared to earlier spectrophotometric methods employing different complexing agents. The stoichiometric ratio between Cr and NNP was observed to be 1 : 3. The molar absorption coefficient (ε) was determined to be 2.05 ∙ 104 l mol−1 cm−1 at λmax 579 nm. The limits of detection for Cr(III) was measured as 3.49 ng l−1. A calibration linear curve was achieved in the concentration range of 0.5–5.0 μg ml−1. Results obtained showed good comparison with the results obtained by atomic absorption spectrometry. The developed method has been adapted for the analysis of Cr(III) in various alloys, pharmaceutical, environmental, and biological samples.

Details

Language :
English, Croatian
ISSN :
00229830 and 13349090
Volume :
73
Issue :
5-6
Database :
Directory of Open Access Journals
Journal :
Kemija u Industriji
Publication Type :
Academic Journal
Accession number :
edsdoj.0ad965ad64684a3ea4be715495d456bb
Document Type :
article
Full Text :
https://doi.org/10.15255/KUI.2023.034