Development of a dispersive liquid–liquid microextraction method for iron speciation and determination in different water samples

Tabrizi, Ahad Bavili

doi:10.1016/j.jhazmat.2010.07.080

Cited by 64 publications

(19 citation statements)

References 29 publications

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“…The membrane-based sensor may not be as ultrasensitive as other reported methods, 7,8 as shown in Table 2, but it offers a simple one-step procedure with an easy colorimetric readout. Most of the reported methods are multistep 4 that involve complex methodologies, 2,6 or device fabrication 18,19 that require a high-degree of expertise.…”

Section: Figure Of Meritsmentioning

confidence: 99%

“…[4][5][6][7][8][9] Even though most of these technique are highly selective as well as sensitive, but lack of easy operational protocols along with complex methodology limit their usage in field applications. The rapidly growing issues of water pollution make it an ambulatory necessity to design sensing devices that are easy to operate and read by non-technical personnel.…”

Section: Introductionmentioning

confidence: 99%

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A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

et al. 2017

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An optical assay for the rapid determination and chemical speciation of Fe 2+ /Fe 3+ species has been proposed for the first time on a polyether sulfone (PES) membrane platform. The small pore size and low wettability (θ ~82 ) of the membrane disallowed the dissipation of analyte droplets on the surface, thus localizing it onto nanoliter arrayed 1,10-phenanthroline spots. Under optimized conditions and within ~5 min, an acceptable limit of detection (0.1 μg mL -1 ) and linear dynamic range (1 -100 μg mL -1 ) were achieved. The proposed method was also successfully applied for indirect determination of Fe 3+ ions in synthetic samples after reduction to Fe 2+ using SO2. The performance of the proposed sensor was validated for its robustness and stability. Due to high selectivity and accuracy, the method was satisfactorily applied for the analysis of Fe 2+ /Fe 3+ species in marine water samples. The proposed method is an easy and low-cost system coupled with good reproducibility and ruggedness, applicable for point-of-use testing.

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Section: Figure Of Meritsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

et al. 2017

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“…Many techniques are useful in determination of iron ions (5,6). The most significant of these techniques useful in determination of iron ions are UV-Vis spectrophotometry, graphite furnace atomic absorption spectrometry (GFAAS), inductive coupled plasma-atomic/optic emission spectrometry (ICP-AES/OES), cathodic stripping voltammetry techniques (CLE-ACSV), flow injection analysis (FIA), ion chromatography (IC) and X-ray fluorescence (XRF) (7)(8)(9)(10)(11). Iron at high concentrations may cause various health problems.…”

Section: Introductionmentioning

confidence: 99%

“…The most important of these methods are liquid-liquid extraction (LLE), co-precipitation, solid phase extraction (SPE), cloud point extraction (CPE), microextraction and adsorption/ Downloaded by [The University of Manchester Library] at 02: 10 12 October 2014 absorption (9,(24)(25)(26). Water insoluble or crosslinked polymeric resins and the modified resins with selective groups for iron ions are used for selective sorption and pre-concentration of iron ions from aqueous media (27)(28)(29)(30).…”

Section: Introductionmentioning

confidence: 99%

Separation and Speciation of Iron Ions by Using Colorimetric Hydrogels

Özay

2014

Journal of Macromolecular Science, Part A

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In this study, Fe 3+ ion selective N-(Rhodamine-6G)lactam-N'-acryloyl-ethylenediamine (RH6GAC) monomer was synthesized. Then, p(Acrylamide-co-N-(Rhodamine-6G)lactam-N'-acryloyl-ethylenediamine) (p(AAm-co-RH6GAC)) and p(2-hydroxyethylmethacrylate-co-N-(Rhodamine-6G)lactam-N'-acryloyl-ethylenediamine) (p(HEMA-co-RH6GAC)) colorimetric hydrogels were synthesized by using acrylamide (AAm) and 2-hydroxyethylmethacrylate (HEMA) as primary monomers. FT-IR, SEM, polymerization yield and swelling characterizations were conducted for the resulting hydrogels. Then, these hydrogels were used in selective absorption of Fe 3+ ions from aqueous media. The hydrogels, which could absorb Fe 3+ ions selectively from a mixture of metal ions, were used as column packing material. The solutions containing Fe 2+ and Fe 3+ ions at different concentrations were separated at a rate of 97.7 ± 0.7%.

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“…8 Although good analytical methods of metal ion estimation like atomic absorption spectrometry (AAS), inductively coupled plasma atomic emission spectrometry (ICP-AES) and X ray fluorescent spectrometry (XRF) detect metal ions at mg L −1 (ppm) and even lower concentrations, they cannot distinguish any difference in the metal oxidation states and as such are inappropriate for iron speciation. Many alternate methods [9][10][11][12][13] have been reported in literature for simultaneous determination of iron(II) and iron(III) in different samples. However, sampling, sample handling, pre-concentration and/or separation of the speciated forms requires rigorous procedures with sophisticated instrumentation inaccessible to common labs.…”

Section: Introductionmentioning

confidence: 99%

1,10-Phenanthroline Modulated Redox Potentials Explored for Benign Iron Speciation Analysis

Rizvi¹,

Teshima²,

Peerzada³

2013

Croat. Chem. Acta

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Abstract. The objective of this study is to develop a simple, environmentally benign alternate analytical method for simultaneous estimation of iron oxidation states. This proposed method of iron speciation is based on 1,10-phenanthroline (phen) modified redox potential of transition metal ions. In a pre-step excess cerium(IV) oxidizes iron(II) in sample to iron(III). Initial back titration of un-reacted cerium(IV) with cobalt(II) in presence of phen gives amount of iron(II) in sample, reduction of iron(III) with cobalt(II) is then used to estimate total iron as iron(III). The potentiometric titration method has been successfully tested for determinations of iron(II) and total iron in synthetic and natural samples and represents a distinctively green alternative to other reported protocols of iron speciation analysis.

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Development of a dispersive liquid–liquid microextraction method for iron speciation and determination in different water samples

Cited by 64 publications

References 29 publications

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

Separation and Speciation of Iron Ions by Using Colorimetric Hydrogels

1,10-Phenanthroline Modulated Redox Potentials Explored for Benign Iron Speciation Analysis

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