A
A. Hamza
Researcher at King Abdulaziz University
Publications - 10
Citations - 717
A. Hamza is an academic researcher from King Abdulaziz University. The author has contributed to research in topics: Aqueous solution & Sorbent. The author has an hindex of 6, co-authored 9 publications receiving 631 citations.
Papers
More filters
Journal ArticleDOI
An overview on the accumulation, distribution, transformations, toxicity and analytical methods for the monitoring of persistent organic pollutants
TL;DR: A comprehensive review with 108 references referring to the distribution, source, accumulation, transformation, types and toxicity of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) is presented.
Journal ArticleDOI
Analysis of some selected catechins and caffeine in green tea by high performance liquid chromatography.
TL;DR: The developed HPLC method demonstrated excellent performance, with low limits of detection and quantification of the tested catechins of 0.004-0.05 μg ml(-1) and 0.17 μg ml (-1), respectively, and recovery percentages of 96-101%.
Journal ArticleDOI
A new method for analysis of sunset yellow in food samples based on cloud point extraction prior to spectrophotometric determination
TL;DR: In this article, a micelle mediated preconcentration method was developed for analysis of sunset yellow (SY) prior to its spectrophotometric determination, based upon cloud point extraction of the ion associate of SY and trioctylamine (TOA).
Journal ArticleDOI
Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o
TL;DR: A simple, fast, low cost and sensitive direct beta-correction spectrophotometric assay of cyanide ions based on its reaction with the reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-1,3-thiazin-6(3H)-one in aqueous media of pH 7-10 is described.
Journal ArticleDOI
Fast and selective removal of trace concentrations of bismuth (III) from water onto procaine hydrochloride loaded polyurethane foams sorbent: Kinetics and thermodynamics of bismuth (III) study
TL;DR: In this paper, a fast and selective method for removal of bismuth (III) species has been developed based upon the formation of tetraiodobismuthate [BiI4]-aq in the test aqueous solution in the presence of KI-H2SO4 followed by subsequent extraction of [biI4)-aq by procaine hydrochloride (PQ+·Cl-) immobilized polyurethane foams (PUFs).