Spectrofluorimetric determination of Zn2+ ions in aqueous medium using 5-(4-flourophenyl)-quinolin-8-ol

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Abstract

A spectrofluorimetric method based on complex formation between Zn2+ ions and 5-(4-flourophenyl)-quinolin-8-ol has been developed for the rapid determination of trace levels of zinc ions. The method is sensitive and selective. The complex formed emit strongly at 535nm with excitation wavelength at 394nm. Complexation formation was optimized by studying the effect of pH, molar ratio of the metal to the ligand and the type of buffers. The study indicated that maximum complexation resulted when the pH of the mixture was maintained at 8.0 with 0.2M carbonate buffer and metal to ligand was at a stoichiometric ratio of 1:2. Under the optimum conditions, the detection limit was 3ppb. Appropriate validation of the method, yielded acceptable relative standard deviations of less than 2% (n =5). The method was applied to the trace determination of Zn2+ ions in tap water, mineral water, fresh milk and cream samples successfully.

Original languageEnglish
JournalJournal of the Association of Arab Universities for Basic and Applied Sciences
DOIs
Publication statusAccepted/In press - Jul 21 2016

Fingerprint

Ions
ions
Complexation
ion
Buffers
Metals
Ligands
complexation
ligand
Buffer
Mineral Waters
buffers
water
Carbonates
Trace
metals
Water
mineral water
Detection Limit
Zinc

Keywords

  • 5-(4-Flourophenyl)-quinolin-8-ol
  • Analysis
  • Spectrofluorimetry
  • Zinc ions

ASJC Scopus subject areas

  • General

Cite this

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title = "Spectrofluorimetric determination of Zn2+ ions in aqueous medium using 5-(4-flourophenyl)-quinolin-8-ol",
abstract = "A spectrofluorimetric method based on complex formation between Zn2+ ions and 5-(4-flourophenyl)-quinolin-8-ol has been developed for the rapid determination of trace levels of zinc ions. The method is sensitive and selective. The complex formed emit strongly at 535nm with excitation wavelength at 394nm. Complexation formation was optimized by studying the effect of pH, molar ratio of the metal to the ligand and the type of buffers. The study indicated that maximum complexation resulted when the pH of the mixture was maintained at 8.0 with 0.2M carbonate buffer and metal to ligand was at a stoichiometric ratio of 1:2. Under the optimum conditions, the detection limit was 3ppb. Appropriate validation of the method, yielded acceptable relative standard deviations of less than 2{\%} (n =5). The method was applied to the trace determination of Zn2+ ions in tap water, mineral water, fresh milk and cream samples successfully.",
keywords = "5-(4-Flourophenyl)-quinolin-8-ol, Analysis, Spectrofluorimetry, Zinc ions",
author = "Maryam Al-Jabri and Al-Kindy, {Salma M Z} and Suliman, {Fakhr Eldin O} and Beena Varghese and Al-Busafi, {Saleh N.} and Al-Lawati, {Haider J.}",
year = "2016",
month = "7",
day = "21",
doi = "10.1016/j.jaubas.2017.01.004",
language = "English",
journal = "Arab Journal of Basic and Applied Sciences",
issn = "1815-3852",
publisher = "Taylor and Francis Ltd.",

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T1 - Spectrofluorimetric determination of Zn2+ ions in aqueous medium using 5-(4-flourophenyl)-quinolin-8-ol

AU - Al-Jabri, Maryam

AU - Al-Kindy, Salma M Z

AU - Suliman, Fakhr Eldin O

AU - Varghese, Beena

AU - Al-Busafi, Saleh N.

AU - Al-Lawati, Haider J.

PY - 2016/7/21

Y1 - 2016/7/21

N2 - A spectrofluorimetric method based on complex formation between Zn2+ ions and 5-(4-flourophenyl)-quinolin-8-ol has been developed for the rapid determination of trace levels of zinc ions. The method is sensitive and selective. The complex formed emit strongly at 535nm with excitation wavelength at 394nm. Complexation formation was optimized by studying the effect of pH, molar ratio of the metal to the ligand and the type of buffers. The study indicated that maximum complexation resulted when the pH of the mixture was maintained at 8.0 with 0.2M carbonate buffer and metal to ligand was at a stoichiometric ratio of 1:2. Under the optimum conditions, the detection limit was 3ppb. Appropriate validation of the method, yielded acceptable relative standard deviations of less than 2% (n =5). The method was applied to the trace determination of Zn2+ ions in tap water, mineral water, fresh milk and cream samples successfully.

AB - A spectrofluorimetric method based on complex formation between Zn2+ ions and 5-(4-flourophenyl)-quinolin-8-ol has been developed for the rapid determination of trace levels of zinc ions. The method is sensitive and selective. The complex formed emit strongly at 535nm with excitation wavelength at 394nm. Complexation formation was optimized by studying the effect of pH, molar ratio of the metal to the ligand and the type of buffers. The study indicated that maximum complexation resulted when the pH of the mixture was maintained at 8.0 with 0.2M carbonate buffer and metal to ligand was at a stoichiometric ratio of 1:2. Under the optimum conditions, the detection limit was 3ppb. Appropriate validation of the method, yielded acceptable relative standard deviations of less than 2% (n =5). The method was applied to the trace determination of Zn2+ ions in tap water, mineral water, fresh milk and cream samples successfully.

KW - 5-(4-Flourophenyl)-quinolin-8-ol

KW - Analysis

KW - Spectrofluorimetry

KW - Zinc ions

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U2 - 10.1016/j.jaubas.2017.01.004

DO - 10.1016/j.jaubas.2017.01.004

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