Liquid/liquid extraction and column solid phase extraction procedures for iron species determination in wines

Tašev, Krste; Karadjova, Irina; Arpadjan, Sonja; Cvetković, Julijana; Stafilov, Trajče

doi:10.1016/j.foodcont.2005.02.010

Cited by 29 publications

(25 citation statements)

References 10 publications

(10 reference statements)

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“…Ionexchange chromatography coupled to FAAS was used by Ajlec anď Stupar for determination of the ratio of Fe (II) and Fe (III) in wines [140]. Tasev et al used liquid/liquid extraction and column SPE procedures combined with FAAS for Fe species determination in wines from Bulgaria and Macedonia and found <15% Fe (II), 30-40% Fe (III) and 30-50% organically stable bounded Fe species [141]. A tandem column SPE and FAAS were used by Pohl and Prusisz for the determination of inorganic and organically bound forms of Fe in wine [142].…”

Section: Fe Speciationmentioning

confidence: 99%

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

Grindlay

Mora

Gras

et al. 2011

Analytica Chimica Acta

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Section: Fe Speciationmentioning

confidence: 99%

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

Grindlay

Mora

Gras

et al. 2011

Analytica Chimica Acta

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“…The latter-often termed speciation measures for Cu-includes solid phase extraction, liquid extraction, and electrochemical techniques [6][7][8][9]. The speciation measures have the possibility to provide an improved link between Cu activity in wine and the development of the oxidized or reduced characters.…”

Section: Introductionmentioning

confidence: 99%

“…Ideally, when performing the speciation measure, the pretreatment of the sample is minimized to limit methodologically induced changes in Cu forms. The degree to which the pretreatment of the wine is minimized is dependent upon the technique, with some requiring extensive dilution of the wine, digestion, pH changes and/or the application of extraction techniques [1,[7][8][9]. Such operations are often necessary prior to instrumental analysis to achieve isolation of Cu forms, removal of interferents and/or to sufficiently optimize sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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Increasing the Efficiency and Accuracy of Labile Cu Measurement in Wine with Screen-Printed Electrodes

Clark

Kontoudakis

2018

Chemosensors

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Development of oxidative and reductive flavors in wine can be influenced by the concentration and form of Cu within the wine. Electrochemical techniques have been devised to quantitate electrochemically active Cu (labile) in wine, as opposed to inactive Cu (non-labile). However, the electrochemical methods to measure labile Cu may be biased by the wine matrix, require lengthy calibration processes and/or unduly perturb the wine matrix during measurement. In this study, medium exchange stripping potentiometry was utilized with a thin mercury film on a screen-printed carbon electrode to provide a quantitation method that could largely overcome these limitations. The best average recoveries for 0.040 mg/L of labile Cu of 101 ± 15% (n = 12) were observed using composite calibration graphs prepared in oxidized wines and on multiple electrodes and using Pb as an internal standard. Composite calibration curves performed on different electrodes to the sample analysis were as effective in quantifying labile Cu as calibration curves performed on the same electrode as the sample. The results allow selection of a quantitation procedure that will suit the required speed and accuracy of labile Cu determination.

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“…However, the uses of classical extraction methods for this purpose are usually time-consuming, labor-intensive and require large amounts of high purity solvents for extraction. Nevertheless, several other techniques for the preconcentration and separation of iron have been proposed using an adsorbent, such as Aspergillus niger [19] or ammonium tetraphenylborate-naphthalene [20] followed by solid-phase extraction (SPE) [21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction and flame atomic absorption spectroscopic determination of trace amounts of iron(III) using octadecyl silica membrane disks modified with 2-mercaptopyridine-1-oxide

Khayatian

Pouzesh

2007

JICS

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A simple and selective method for rapid extraction and determination of trace amounts of iron(III) using octadecyl-bonded silica membrane disks modified with 2-mercaptopyridine-1-oxide and flame atomic absorption spectroscopy is presented. The factors influencing extraction efficiency were evaluated, including the nature of the counter anion, pH of the sample solution, amount of ligand, flow rate of the sample and type of stripping solution. The maximum capacity of the membrane disk, modified by 10 mg of the ligand, was found to be 926 ± 6 g of iron(III). The breakthrough volume was greater than 2500 ml. Iron(III) was completely recovered ( 99%) from water with a preconcentration factor of more than 166. The limit of detection of the proposed method was 0.63 ng ml -1 . The various cationic interferences had no effect on the recovery of iron(III) from the binary mixtures. The proposed method was applied to the determination of iron(III) from three different water samples.

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Liquid/liquid extraction and column solid phase extraction procedures for iron species determination in wines

Cited by 29 publications

References 10 publications

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

Increasing the Efficiency and Accuracy of Labile Cu Measurement in Wine with Screen-Printed Electrodes

Solid phase extraction and flame atomic absorption spectroscopic determination of trace amounts of iron(III) using octadecyl silica membrane disks modified with 2-mercaptopyridine-1-oxide

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