Determination of aluminum(III) in crystallized fruit samples using a multicommutated flow system

Ildikó V. Tóth, António O.S.S. Rangel*, João L.M. Santos, José L.F.C. Lima

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A multicommutated flow system was developed for the determination of aluminum in crystallized fruit samples. Spectrophotometric determination is based on the reaction of aluminum with chrome azurol S. The binary sampling technique was implemented to improve mixing conditions and to minimize reagent consumption. Three different working zones were established (0.5-5.0, 5.0-25.0, and 10.0-100 ppm) using the zone sampling approach, allowing us to adapt the extent of the in-line dilution. The influence of the chemical and physical parameters on the performance of the system was studied. Detection limits of 0.1, 0.6, and 0.8 ppm were obtained for the lowest, the medium, and the highest dispersion system, respectively. The procedure was applied to the determination of aluminum in crystallized fruit extracts. The results were in agreement with those obtained by the reference flame atomic absorption procedure at a 95% confidence level. Repeatability (RSD) was better than 2.4% in all of the three application zones.

Original languageEnglish
Pages (from-to)2450-2454
Number of pages5
JournalJournal of Agricultural and Food Chemistry
Volume52
Issue number9
DOIs
Publication statusPublished - 5 May 2004

Keywords

  • Aluminum(III)
  • Crystallized fruits
  • Multicommutation
  • Spectrophotometry
  • Zone sampling

Fingerprint

Dive into the research topics of 'Determination of aluminum(III) in crystallized fruit samples using a multicommutated flow system'. Together they form a unique fingerprint.

Cite this