A sequential injection method for the fluorimetric determination of aluminum in drinking water using 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid

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Abstract

A robust and simple sequential injection (SI) method for the assay of aluminum ions in drinking water is described. The method is based on the complex formation between aluminum and 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ). The fluorescence of the complex is monitored at an emission wavelength of 492 nm with excitation at 357 nm. The HSNQ concentration, aspirated reagent and sample volumes were optimized simultaneously using 33 full factorial design. The optimum operating conditions are aspirated sample and reagent volumes of 90 and 70 μL, respectively, and HSNQ concentration of 20 μM. With these conditions linear calibration curves were obtained from 100 to 800 ppb. The detection limit was 4 ppb. The maximum relative standard deviation of the method was 1.43% (n = 5). The method was successfully applied for the determination of aluminum in drinking water samples.

Original languageEnglish
Pages (from-to)1174-1179
Number of pages6
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume68
Issue number5
DOIs
Publication statusPublished - Dec 31 2007

Fingerprint

drinking
sulfonic acid
quinoline
Aluminum
Potable water
Drinking Water
injection
aluminum
reagents
Acids
water
factorial design
standard deviation
Assays
Fluorescence
Calibration
Ions
Wavelength
fluorescence
curves

Keywords

  • Aluminum
  • SIA
  • Spectrofluorimetry 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ)
  • Water analysis

ASJC Scopus subject areas

  • Spectroscopy

Cite this

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title = "A sequential injection method for the fluorimetric determination of aluminum in drinking water using 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid",
abstract = "A robust and simple sequential injection (SI) method for the assay of aluminum ions in drinking water is described. The method is based on the complex formation between aluminum and 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ). The fluorescence of the complex is monitored at an emission wavelength of 492 nm with excitation at 357 nm. The HSNQ concentration, aspirated reagent and sample volumes were optimized simultaneously using 33 full factorial design. The optimum operating conditions are aspirated sample and reagent volumes of 90 and 70 μL, respectively, and HSNQ concentration of 20 μM. With these conditions linear calibration curves were obtained from 100 to 800 ppb. The detection limit was 4 ppb. The maximum relative standard deviation of the method was 1.43{\%} (n = 5). The method was successfully applied for the determination of aluminum in drinking water samples.",
keywords = "Aluminum, SIA, Spectrofluorimetry 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ), Water analysis",
author = "Al-Kindy, {Salma M Z} and Al-Ghamari, {Salwa S.} and Suliman, {Fakhr Eldin O}",
year = "2007",
month = "12",
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doi = "10.1016/j.saa.2007.01.018",
language = "English",
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pages = "1174--1179",
journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
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TY - JOUR

T1 - A sequential injection method for the fluorimetric determination of aluminum in drinking water using 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid

AU - Al-Kindy, Salma M Z

AU - Al-Ghamari, Salwa S.

AU - Suliman, Fakhr Eldin O

PY - 2007/12/31

Y1 - 2007/12/31

N2 - A robust and simple sequential injection (SI) method for the assay of aluminum ions in drinking water is described. The method is based on the complex formation between aluminum and 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ). The fluorescence of the complex is monitored at an emission wavelength of 492 nm with excitation at 357 nm. The HSNQ concentration, aspirated reagent and sample volumes were optimized simultaneously using 33 full factorial design. The optimum operating conditions are aspirated sample and reagent volumes of 90 and 70 μL, respectively, and HSNQ concentration of 20 μM. With these conditions linear calibration curves were obtained from 100 to 800 ppb. The detection limit was 4 ppb. The maximum relative standard deviation of the method was 1.43% (n = 5). The method was successfully applied for the determination of aluminum in drinking water samples.

AB - A robust and simple sequential injection (SI) method for the assay of aluminum ions in drinking water is described. The method is based on the complex formation between aluminum and 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ). The fluorescence of the complex is monitored at an emission wavelength of 492 nm with excitation at 357 nm. The HSNQ concentration, aspirated reagent and sample volumes were optimized simultaneously using 33 full factorial design. The optimum operating conditions are aspirated sample and reagent volumes of 90 and 70 μL, respectively, and HSNQ concentration of 20 μM. With these conditions linear calibration curves were obtained from 100 to 800 ppb. The detection limit was 4 ppb. The maximum relative standard deviation of the method was 1.43% (n = 5). The method was successfully applied for the determination of aluminum in drinking water samples.

KW - Aluminum

KW - SIA

KW - Spectrofluorimetry 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ)

KW - Water analysis

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JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

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