Preconcentration of Trace Amounts of Copper in Aqueous Samples by Octadecyl Silica Membrane Modified Disks and Determination by Flame Atomic Absorption Spectrometry

Ghasemi, Zahra; Basiripour, Fatemeh; Poursaberi, Tahereh; Masoud, Salavati Niasari; Shamsipour, M; Hashemi, Omid Reza; Raoufi, Farhad

doi:10.1080/03067310108044345

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…Our recent conductometric studies in an acetonitrile solution revealed that it can form a fairly 1:1 stable and selective complex with Pb 2+ and Cu 2+ ions. 29 Thus, we decided to consider its capability as a suitable modifier for the separation and preconcentration of Pb and Cu 2+ ions with silanized MCM-41.…”

Section: Resultsmentioning

confidence: 99%

Novel Method for the Fast Preconcentration and Monitoring of a ppt Level of Lead and Copper with a Modified Hexagonal Mesoporous Silica Compound and Inductively Coupled Plasma Atomic Emission Spectrometry

et al. 2004

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Section: Resultsmentioning

confidence: 99%

Novel Method for the Fast Preconcentration and Monitoring of a ppt Level of Lead and Copper with a Modified Hexagonal Mesoporous Silica Compound and Inductively Coupled Plasma Atomic Emission Spectrometry

et al. 2004

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“…The solution LOD were between 0.024 and 0.20 mg l 21 . Ghasemi and co-workers 61,62 developed procedures for the FAAS determination of Cu in waste water and black tea in which the analyte was retained after complexation on octadecyl silica membrane discs. For complexation with H(2)Salphen, the LOD was 0.07 ng ml 21 , and with N,N'-bis(salicylidene)ethylenediamine it was 0.04 ng ml 21 .…”

Section: Solid Phase Extractionmentioning

confidence: 99%

Atomic spectrometry update. Advances in atomic emission, absorption and fluorescence spectrometry and related techniques

Evans

Day

Price

et al. 2003

J. Anal. At. Spectrom.

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“…Schiff base compounds have the ability to form selective stable complexes with metal ions of compatible dimensions and can potentially be used in their separation and determination [1][2][3]. Thus, they have been widely applied as ionophores for construction of membrane sensors for metal ions [4,5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of an iron(III)-selective PVC membrane sensor based on a bis-bidentate Schiff base ionophore

Zamani

Salavati‐Niasari

2008

Transition Met Chem

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A Fe 3? ion-selective membrane sensor was fabricated from polyvinyl chloride (PVC) matrix membrane containing bis-bidentate Schiff base (BBS) as a neutral carrier, sodium tetraphenyl borate (NaTPB) as anionic excluder, and o-nitrophenyloctyl ether (NPOE) as a plasticizing solvent mediator. The effects of the membrane composition, pH, and additive anionic influence on the response properties were investigated. The best performance was obtained with a membrane containing 32% PVC, 62.5% NPOE, 3% BBS, and 2.5% NaTPB. The electrode shows a Nernstian behavior (slope of 19.3 ± 0.6) over a very wide iron ion concentration range (1.0 9 10 -7 -1.0 9 10 -2 M) and has a low detection limit (7.4 9 10 -8 M). The potentiometric response of the sensor is independent of pH of the solution in the pH range 1.9-5.1. The proposed sensor has a very low response time (\15 s) and a good selectivity relative to a wide variety of other metal ions including common alkali, alkaline earth, heavy, and transition metal ions. The electrode can be used for at least 60 days without any considerable divergence in potentials. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of 1.0 9 10 -2 M Fe 3? ions with a 1.0 9 10 -4 M EDTA and the direct determination of Fe 3? in mineral water and wastewater samples.

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Preconcentration of Trace Amounts of Copper in Aqueous Samples by Octadecyl Silica Membrane Modified Disks and Determination by Flame Atomic Absorption Spectrometry

Cited by 12 publications

References 22 publications

Novel Method for the Fast Preconcentration and Monitoring of a ppt Level of Lead and Copper with a Modified Hexagonal Mesoporous Silica Compound and Inductively Coupled Plasma Atomic Emission Spectrometry

Novel Method for the Fast Preconcentration and Monitoring of a ppt Level of Lead and Copper with a Modified Hexagonal Mesoporous Silica Compound and Inductively Coupled Plasma Atomic Emission Spectrometry

Atomic spectrometry update. Advances in atomic emission, absorption and fluorescence spectrometry and related techniques

Fabrication of an iron(III)-selective PVC membrane sensor based on a bis-bidentate Schiff base ionophore

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