Application of a new water-soluble polyethylenimine polymer sorbent for simultaneous separation and preconcentration of trace amounts of copper and manganese and their determination by atomic absorption spectrophotometry

Sabermahani, Fatemeh; Taher, Mohammad Ali

doi:10.1016/j.aca.2006.02.048

Cited by 28 publications

(19 citation statements)

References 23 publications

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“…As presented in Table 2, the concentration of Cu in human hair sample obtained in the present procedure (12.53 μg g -1 ) is in the same range as the levels of Sabermahani et al (11.59 μg g -1 ), 14 Mohadesi et al (12.41 μg g -1 ), 15 Ramakrishna et al (13.90 μg g -1 ), 28 Bertazzo et al (14.89 -15.29 μg g -1 ) 29 and Rao et al (4.90 -22.54 μg g -1 ) 30 reported. Also, the results show the presence of Cu(II) in natural water samples.…”

Section: Analytical Applicationssupporting

confidence: 80%

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Overoxidized Polypyrrole Doped with 4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene Disulfonic Acid as a Selective and Regenerable Film for the Stripping Detection of Copper(II)

Mohadesi

Taher

2007

ANAL. SCI.

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Stripping voltammetry is a very sensitive method for the determination of many traces of metal ions and organic compounds. It achieves such fine levels of detection by combining an accumulation process with a voltage scanning measurement. 1,2 The universal working electrodes for stripping analysis are hanging mercury drop electrodes (HMDE) and electrochemically generated mercury film electrodes (MFE). 3 Recently, because of mercury toxic effects, there has been a growing interest in the use of chemically modified electrodes (CME) for trace metal stripping analysis. With this process, accumulation usually occurs by reactions between an analyte and an immobilized modifier at the electrode surface. [1][2][3][4][5] Electrically conducting polymers (ECPs), such as polypyrrole (PPy), can be used for the immobilization of complexing reagents for trace metal complexation/accumulation with voltammetric detection of the complexed metal.6,7 Numerous anionic ligands have been incorporated into a PPy matrix as functional dopants for the stripping analysis of metal ions. 8 The preparation of these functional PPy films is very simple, controllable and reproducible by electrochemical oxidizing pyrrole monomers in the presence of the target anionic reagents. 9 However, a major limitation lies in the high background currents typically encountered with modified PPy films. These currents mask the relatively smaller metal-chelate binding, thereby making metal detection difficult. 10One solution of this problem is to overoxidize PPy via the application of a high anodic potential in high-pH medias. [11][12][13] In the following section we present the ability of overoxidized polypyrrole (OPPy) film doped with an anionic complexing ligand, 4,5-dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene disulfonic acid (SPADNS, Fig. 1), to preconcentrate Cu(II) ions. SPADNS is an anion, and can thus be incorporated into a growing polycationic PPy film, and can also preconcentrate copper ions at an electrode surface by complexation. Experimental ChemicalsPyrrole (Fluka) was distilled under reduced pressure before use. SPADNS three sodium salt (Aldrich) was used as received. Other reagents were purchased from Merck and were of analytical grade. All aqueous solutions were prepared with double-distillated water. ApparatusElectrochemical measurements were made with a Metrohm multipurpose instrument Model 757. Working electrodes were 3 mm diameter platinum disks constructed in-house. The counter electrode was a platinum wire and the reference electrode was Ag/AgCl, both from Metrohm. A Metrohm pH meter, Model 710, was used for pH measurements. Film preparationPPy/SPADNS films were prepared potentiostatically by holding the potential at +0. Department of Chemistry, Shahid Bahonar University of Kerman, P. O. Box 76175-133, Kerman, IranA conducting polymer modified electrode based on the incorporation of 4,5-dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene disulfonic acid, SPADNS, as an anionic complexing ligand into polypyrrole film during electropolymerizati...

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Section: Analytical Applicationssupporting

confidence: 80%

“…14,15 The hair sample was rinsed with acetone, and 4.20 g of dried sample was accurately weighted and burned in a furnace at 700˚C until a white powder was obtained. The obtained ash was dissolved in a minimum volume of concentrated nitric acid with heating.…”

Section: Pretreatment Of Real Samplesmentioning

confidence: 99%

Overoxidized Polypyrrole Doped with 4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene Disulfonic Acid as a Selective and Regenerable Film for the Stripping Detection of Copper(II)

Mohadesi

Taher

2007

ANAL. SCI.

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“…Recoveries ranging from 98 to 104% were satisfactory. Also, the concentration of Cu in human hair sample obtained in the present procedure is in the same range as the levels that of Sabermahani et al, 23 Ramakrishna et al, 24 Bertazzo et al, 25 Sreenivasa Rao et al 26 and Mohadesi et al 27 reported.…”

Section: Analytical Applicationsupporting

confidence: 79%

“…Figure 2a, b and c show the Fourier-transformed infrared spectra of as carboxylated MWNTs, AHA and AHA-functinalized MWNTs, respectively. It is seen that the COOH-MWNTs yielded three major peaks at wavenumbers near 1400, 1700 and 3500 cm ¹1 , which were associated with aromatic -C=C groups, carbonyl groups (-C=O) from carboxylic acids (-COOH), and alcoholic groups (-COH) or hydroxyl groups (-OH) from carboxylic acids, [22][23][24] respectively. However, when MWNTs is functionalized with AHA, the FT-IR spectra of AHA-MWNT exhibited additional bands at 1100, 2900 and 2359 cm ¹1 which resembled those in the presence of AHA modified onto MWNT surface.…”

Section: Stripping Determination Of Cu(ii) On Aha-mwnt/gcementioning

confidence: 99%

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4-Aminohippuric Acid-functionalized Carbon Nanotubes for Stripping Voltammetric Determination of Copper(II) Ions

et al. 2016

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In this study, we have demonstrated that 4-aminohippuric acid (AHA) can be coupled to acid-treated multiwalled carbon nanotubes (MWNTs) in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) and Nhydroxysuccinimide (NHS) and assembled as AHA-MWNT composites. These functionalized MWNTs can be used for modification of glassy carbon electrode and applied for determination of copper(II) ions. The electrochemical method was based on preconcentration of copper ions onto an electrode surface and then their anodic stripping voltammetric determination. The analytical curve for Cu(II) ions covered the linear range varying from 1.0 up to 230.0 µg L −1 . The limit of detection was found to be 0.4 µg L −1, while the relative standard deviation at 5.0 and 200.0 µg L −1 were 1.5 and 1.1%, respectively. Most of the coexisting ions had little or no effect on the determination of copper(II). The obtained results suggest that the proposed method can be applied as a simple and efficient alternative way for the determination of copper ions which have good accuracy in real samples such as human hair and natural waters.

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Synthesis and characterization of water‐soluble oligosalicylaldehyde‐sulfanilic acid and its Cu(II), Co(II), Pb(II) complexes

Turaç

Sürme

Şahmetlioğlu

et al. 2008

J of Applied Polymer Sci

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This work presents the synthesis and characterization of a new water-soluble oligophenol derivative, 4-(2-hydroxybenzylideneamino)benzenesulfanilic acid (OSAL-SA) and its metal complexes. The chemical structure of the water-soluble polymer was characterized by nuclear magnetic resonance ( 1 H NMR) and Fourier transform infrared (FTIR) spectroscopies and thermogravimetric analyses (TGAs). Pb(II), Cu(II), Co(II) complexes of the polymer were also synthesized in methanol. Characterizations of water insoluble polymer-metal complexes were performed by FTIR, flame atomic absorption spectroscopy, and TGA. The conductivity measurements of OSAL-SA and polymer-metal complexes were carried out by the four-probe technique.

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Application of a new water-soluble polyethylenimine polymer sorbent for simultaneous separation and preconcentration of trace amounts of copper and manganese and their determination by atomic absorption spectrophotometry

Cited by 28 publications

References 23 publications

Overoxidized Polypyrrole Doped with 4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene Disulfonic Acid as a Selective and Regenerable Film for the Stripping Detection of Copper(II)

Overoxidized Polypyrrole Doped with 4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene Disulfonic Acid as a Selective and Regenerable Film for the Stripping Detection of Copper(II)

4-Aminohippuric Acid-functionalized Carbon Nanotubes for Stripping Voltammetric Determination of Copper(II) Ions

Synthesis and characterization of water‐soluble oligosalicylaldehyde‐sulfanilic acid and its Cu(II), Co(II), Pb(II) complexes

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