Surfactant-mediated extraction of iron and its spectrophotometric determination in rocks, minerals, soils, stream sediments and water samples

Tarafder, Pranab Kumar; Thakur, Raghbendra

doi:10.1016/j.microc.2004.09.004

Cited by 44 publications

(22 citation statements)

References 4 publications

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“…29,30 Gas Sensing Characterization. Gas sensors were prepared by dispersing perovskite powders in ethanol and dropping the obtained suspension over alumina substrates provided with interdigitated Pt electrodes and a Pt meander acting as heating element.…”

Section: ■ Introductionmentioning

confidence: 99%

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study

et al. 2014

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A simple and cheap wet chemical approach is exploited to synthesize\ud LaFe1‑xGaxO3 (x = 0−1) crystalline perovskites. Ga doping level deeply influences not only\ud the microstructure, but also the iron chemical features and consequently the responses to\ud external chemicals. Sensitivity toward gases (NO2, CO, and ethanol), in fact, is driven by both\ud Fe/Ga ratio and iron oxidation states, which are demonstrated playing a role much stronger\ud than morphological parameters, such as grain size and specific surface area, usually dominating\ud the performances of metal oxide based gas sensors. Results highlight that sensing behavior is\ud tunable within a large extent by a simple and effective modulation of the chemical composition,\ud obtaining sensitivities comparable with state of the art perovskite based gas sensors

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Section: ■ Introductionmentioning

confidence: 99%

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study

et al. 2014

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“…On the other hand, among cationic surfactants, cetyltrimethylammonium bromide (CTAB) constitutes undoubtedly an example of self-assembled ordered medium as micelles, and other structures and phases, in function of its concentration and characteristics of the dissolvent, having been widely employed in analytical chemistry with different purposes [13][14][15][16][17][18].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

New room temperature coacervation scheme for lead traces determination by solid surface fluorescence. Application to wines produced in Argentina

Talio

Kaplan

Acosta

et al. 2015

Microchemical Journal

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“…510 nm (Harvey et al 1955;Lozano-Camargo et al 2007). In turn, thiocyanate ions and Fe(III) form a red complex with the maximum absorption at 475-485 nm (Tarafder and Thakur 2005), while 1,10-phenanthroline forms a yellow complex with the maximum absorption of 396 nm (Harvey et al 1955).…”

Section: Introductionmentioning

confidence: 99%

Determination of Iron Species in Samples of Iron-Fortified Food

et al. 2014

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The paper presents the determination of iron forms in food products. The procedure of sample extraction was developed and optimized, preserving the content of particular forms of iron. The colorimetric method using 2,2′-bipirydyl (measurements at 520 nm) was applied in Fe(II) determinations, while in Fe(III) determinations, the colorimetric method with potassium thiocyanate (measurements at 470 nm) was applied. The total content of iron was determined by the technique of atomic absorption spectrometry, which allowed for the determination of iron content in organic and inorganic complex compounds. Detection limits of 1 mg kg −1 were obtained for all determined iron forms, with the precision ranging between 0.7 % and 1.5 % for 10 mg kg −1 concentration. The optimized analytical procedure was applied in the determinations of iron forms in iron-fortified food products.

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Surfactant-mediated extraction of iron and its spectrophotometric determination in rocks, minerals, soils, stream sediments and water samples

Cited by 44 publications

References 4 publications

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study

New room temperature coacervation scheme for lead traces determination by solid surface fluorescence. Application to wines produced in Argentina

Determination of Iron Species in Samples of Iron-Fortified Food

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Surfactant-mediated extraction of iron and its spectrophotometric determination in rocks, minerals, soils, stream sediments and water samples

Cited by 44 publications

References 4 publications

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe1-xGaxO3, a Case Study

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe1-xGaxO3, a Case Study

New room temperature coacervation scheme for lead traces determination by solid surface fluorescence. Application to wines produced in Argentina

Determination of Iron Species in Samples of Iron-Fortified Food

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Product

Resources

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Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study

Chemical Tuning versus Microstructure Features in Solid-State Gas Sensors: LaFe_1-xGa_xO₃, a Case Study