Cited by 86Analytical chemistry methods developmentElectrochemical Analysis and ApplicationsAnalytical Chemistry and Chromatography

Combination of ionic liquid-based dispersive liquid–liquid micro-extraction with stopped-flow spectrofluorometry for the pre-concentration and determination of aluminum in natural waters, fruit juice and food samples

Abdolmohammad-Zadeh, H., Sadeghi, G.H.·2010·Talanta

Abstract

In this research, we combined ionic liquid-based dispersive liquid-liquid micro-extraction (IL-based DLLME) with stopped-flow spectrofluorometry (SFS) to evaluate the concentration of aluminum in different real samples at trace level. 1-Hexylpyridinium hexafluorophosphate [Hpy][PF(6)] ionic liquid and 8-hydroxyquinoline (oxine), which forms a highly fluorescent complex with Al(3+), were chosen as the extraction solvent and chelating agent, respectively. The hydrophobic Al-oxine complex was extracted into the [Hpy][PF(6)] and separated from the aqueous phase. Then, the concentration of the enriched aluminum in the sediment phase was determined by SFS. Some effective parameters that influence the SFS signals and the micro-extraction efficiency, such as the suction and sending time, the concentration of the chelating agent, pH, the amount of the ionic liquid, the type of disperser solvent and diluting agent, ionic strength, extraction time, equilibration temperature and centrifugation time were investigated and optimized. In the optimum experimental conditions, the limit of detection (3s) and enrichment factor were 0.05microgL(-1) and 100, respectively. The relative standard deviation (RSD) for six replicate determinations of 6microgL(-1) Al was 1.7%. The calibration graph using the pre-concentration system was linear in the range of 0.06-15microgL(-1) with a correlation coefficient of 0.9989. The developed method was validated by the analysis of certified reference materials and applied successfully to the determination of aluminum in several water, fruit juice and food samples.

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Crossref · 10.1016/j.talanta.2010.01.012

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Authors
Abdolmohammad-Zadeh, H., & Sadeghi, G. H.
Affiliations
Azarbaijan Shahid Madani University (IR)
Venue
Talanta
Publisher
Elsevier BV
Published
2010-05
Volume
81
Issue
3
Pages
778-785
ISSN
0039-9140 (ISSN-L)
OpenAlex
W2025031598
Cited by
86
References
38
Citations by year
2024: 2 · 2023: 3 · 2022: 5 · 2021: 2 · 2020: 1 · 2019: 4 · 2018: 3 · 2017: 6 · 2016: 6 · 2015: 5 · 2014: 8 · 2013: 9 · 2012: 16
FWCI
13.02
Type
journal article
Language
en
Open access
closed
Locations
  • Talanta (publishedVersion)
  • PubMed (publishedVersion)
Funders
Azarbaijan Shahid Madani University
Topics
  • Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
  • Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Analytical Chemistry and Chromatography
Keywords
aluminum determination, 8-hydroxyquinoline, natural waters, fruit juice, food samples, extraction optimization
MeSH terms
Aluminum, Beverages, Chelating Agents, Chemistry Techniques, Analytical, Food Analysis, Fruit, Hydrogen-Ion Concentration, Ions, Solvents, Spectrometry, Fluorescence, Temperature, Time Factors, Triticum, Reproducibility of Results, Solid Phase Microextraction

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