Spectrophotometric determination of aluminium with ferron and a quaternary ammonium salt

Goto, Katsumi; Tamura, Hiroki; Onodera, Mitsuko; Nagayama, Masaichi

doi:10.1016/0039-9140(74)80110-4

Cited by 21 publications

(10 citation statements)

References 11 publications

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“…In this study, 8-hydroxy-7-iodoquinoline-5-sulfonic acid (Ferron, C 9 H 6 INO 4 S), as a classical ligand used for spectrophotometric determination of metal ions [19,20], was used as a complexing agent for cloud point extraction of both iron species. The procedure was applied to the speciation of iron in water and determination of total iron in water and milk samples.…”

Section: Introduvtionmentioning

confidence: 99%

Separation, preconcentration and measurement of inorganic iron species by cloud point extraction and flow injection flame atomic absorption spectrometry

Shakerian

Dadfarnia

Shabani

2009

JICS

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A sensitive and simple method for determination of iron species after separation/preconcentration by cloud point extraction (CPE) has been developed. When the temperature is higher than the cloud point extraction temperature (60 °C), the complexes of iron(II) and iron(III) species with ferron enter the surfactant-rich phase. Total amount of iron in the surfactant-rich phase was analyzed by FI-AAS, whereas, Fe(II) concentration was determined by a spectrophotometric method using mathematical equation to overcome the interference of Fe(III), when they are both present in the same solution. In this way the time-consuming and labor-intensive steps of preoxidation of Fe(II) or reduction of Fe(III) were eliminated. The parameters affecting could point extraction, such as concentrations of ferron and Triton X-114, pH, and equilibrium temperature were systematically investigated. Under the optimum conditions, the calibration curves were linear over the range of 10-250 and 5-150 μg l -1 for 20 and 40 ml preconcentration volume, respectively. The detection limit was 1.7 μg l -1 , and relative standard deviation (RSD) was 2.1% for 20 ml preconcentration volume. The method was applied to the determination of iron species in water samples and total iron in milk. The accuracy was determined by recovery experiment, independent analysis by furnace atomic absorption spectrometry and analysis of certified reference water.

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Section: Introduvtionmentioning

confidence: 99%

Separation, preconcentration and measurement of inorganic iron species by cloud point extraction and flow injection flame atomic absorption spectrometry

Shakerian

Dadfarnia

Shabani

2009

JICS

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“…whereas the absorbance at 370 nm only comes from AlQ 3 3− . 15,21,35 Hence, when the [Ferron] concentration increases, the distribution ratio of the four species Al 3+ , AlQ + , AlQ 2 − , and AlQ 3 3− ) continuously changes. The concentrations of Al 3+ , AlQ + , and AlQ 2 − falls, and the concentration of AlQ 3 3− rises.…”

Section: Resultsmentioning

confidence: 99%

“…The useful pH range was also widened. 15,16 Langmyhr et al 17 measured the two dissociation constants of 2.50 and 7.11 for ferron by potentiometric titration, and the stepwise stability constants of the Al–ferron complexes were 10 7.6 , 10 7.1 , and 10 5.6 .…”

Section: Introductionmentioning

confidence: 99%

An Important Improvement in Ferron-Timed Spectrophotometry

Zhang

Chang

Ren³

et al. 2013

Appl Spectrosc

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Ferron dosage ([Ferron]) is key to ferron-timed spectrophotometry (ferron assay). In order to clarify some important questions, the following studies were conducted: (1) The effect of [Ferron] on the sensitivity of total aluminum (AlT) determination was experimentally investigated and ²⁷Al nuclear magnetic resonance (²⁷Al NMR) spectroscopy was used to verify our developed Ferron assay; (2) the chemical equilibrium calculation was employed to analyze the effect of [Ferron] on the determination of AlT; and (3) the main reason for insufficient [Ferron] was further analyzed. This is the first study to standardize a ferron assay operating procedure.

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“…Kekurangan seperti penggunaan reagen spektofotometri bagi logam yang tidak spesifik (mudah diganggu oleh kehadiran ion logam lain), kompleks logam yang terbentuk tidak mudah larut di dalam air (terpaksa menggunakan pelarut yang khusus) dan dalam kes-kes tertentu, Hukum Beer tidak dipatuhi walaupun nilai pH dan parameter lain dikawal dengan teliti (Goto et al 1974). Permasalahan ini telah mendorong para penyelidik untuk mengatasinya dengan perbagai kaedah diperkenalkan seperti pensintesisan reagen yang baru (Lobinski & Marczenko 1992), percampuran dua atau lebih bagi reagen pengesanan logam (Warner & McGown 1992) dan penambahan surfaktan kepada kompleks logam-reagen (Alarfaj & El-Tohamy 2015;Diaz Garcia & Sanz-Medel 1986;Piñeiro et al 2015).…”

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Kesan Penambahan Surfaktan tak-Ionik kepada Kompleks Al(III)-Morin dalam Penentuan Aluminium (III) Akues secara Spektrofotometri

Suah

Ahmad²,

Lee³

2016

JSM

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ABSTRAK Dalam kajian ini, kesan surfaktan tak-ionik terhadap kompleks Al(III)-morin telah dijalankan. Surfaktan tak-ionik The effect of surfactants on the Al(III)-morin complex have been studied. It was found that non-ionic surfactant noticeably enhances the absorbance of the Al(III)-morin complex. Determination of submicrogram quantities of Al(III) ion at pH4.00 was made possible by the addition of triton X-100. Maximum absorption was obtained at wavelength of 425 nm

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Spectrophotometric determination of aluminium with ferron and a quaternary ammonium salt

Cited by 21 publications

References 11 publications

Separation, preconcentration and measurement of inorganic iron species by cloud point extraction and flow injection flame atomic absorption spectrometry

Separation, preconcentration and measurement of inorganic iron species by cloud point extraction and flow injection flame atomic absorption spectrometry

An Important Improvement in Ferron-Timed Spectrophotometry

Kesan Penambahan Surfaktan tak-Ionik kepada Kompleks Al(III)-Morin dalam Penentuan Aluminium (III) Akues secara Spektrofotometri

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