A new functionalized resin and its application in preconcentration system with multivariate optimization for nickel determination in food samples

Lemos, Valfredo Azevedo; Baliza, Patrícia Xavier; Santos, Juracir Silva; Nunes, Luana Sena; Jesus, Adriana Alves de; Rocha, Marcelo Eça

doi:10.1016/j.talanta.2004.11.004

Cited by 50 publications

(28 citation statements)

References 33 publications

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“…[8][9][10] A number of supports and chelating ligands have been widely used in the design of chelating resins for the preconcentration and separation of trace metal ions from various matrices. The most prominent among the supports used are Amberlite XAD resins, 11,12 silica gel, 13 activated carbon, 14 activated alumina, 15 sepiolite, 16 and related polymeric supports. 17,18 Some important and recently reported chelating matrices described using such supports are: silica gel modified with purpurogallin, 19 1-(2-pyridylazo)-2-naphthol, 20 3-aminopropyltriethoxysilane, 21 1,8-dihydroxyanthraquinone, 22 2-aminothiazole, 23 N-propylsalicylaldimine, 24 surfactant coated alumina modified with 1-(2-pyridylazo)-2-naphthol, 15 Amberlite XAD-2 modified with chromotropic acid, 25 alizarin red-S, 26 Nitroso R salt, 27 Amberlite XAD-4 modified with o-aminobenzoic acid, 28 N-hydroxyethylenediamine, 29 and Amberlite XAD-16 modified with 1-(2-thiazolylazo)-2-naphthol.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration of trace elements by using 1-(2-Pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS

Tokalıoğlu

Büyükbas

Kartal

2006

J. Braz. Chem. Soc.

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Neste estudo foi sintetizada a resina Amberlite XAD funcionalizada por 1-(2-piridilazo)-2-naftol (PAN) e a resina resultante foi usada na pré-concentração dos íons Cr(III), Mn(II), Fe(III), Ni(II), Cu(II), Cd(II) e Pb(II) presentes em baixas concentrações em diferentes amostras. Para isso, o copolímero foi nitrado, reduzido à correspondente amina, convertido ao sal diazonato com nitrito e em reação com PAN produziu a resina complexante XAD-1180-PAN. Para o método descrito, parâmetros analíticos para recuperação dos elementos traço foram avaliados tais como, pH, volume da amostra, quantidade de resina, vazão de retenção e remoção, volume e tipo de eluente. Os metais retidos na resina XAD-1180-PAN foram eluídos com HNO 3 2 mol L -1 . A influência dos íons presentes na matriz, ou seja, Na(I), K(I), Ca(II) e Mg(II), sobre a recuperação dos elementos traço também foi avaliada, quando presentes isoladamente ou em conjunto. A repetibilidade do método foi avaliada nas condições experimentais ótimas estabelecidas. Os valores de recuperação, para todos os elementos, exceto o Cr(III), foram ≥92% e os desvios padrão relativos ≤8.5%. In this study, Amberlite XAD-1180 resin functionalized by 1-(2-pyridylazo)-2-naphthol (PAN) was synthesized and the resulting resin was used for preconcentration of Cr(III), Mn(II), Fe(III), Ni(II), Cu(II), Cd(II) and Pb(II) elements present at trace levels in different matrices. For this purpose, the copolymer was nitrated, reduced to the corresponding amine, converted to the diazonium salt with nitrite and reacted with PAN to produce the XAD-1180-PAN chelating resin. For the described method, the effect of some analytical parameters, such as pH, sample volume, resin amount, flow rates of uptake and stripping, volume and type of eluent, on the recovery of the trace elements was investigated. The metals retained on the XAD-1180-PAN resin were eluted by 2 mol L -1 HNO 3 . The influence of matrix ions, i.e., Na(I), K(I), Ca(II) and Mg(II), on the recovery of trace elements was also examined by using the developed method when they occurred both individually and together. The repeatability of the method at the optimum conditions determined experimentally was investigated. The recovery values for all the elements, except for Cr(III), were found to be ≥92% and the relative standard deviation was ≤8.5%. The 3s/b detection limits for Cr(III), Mn(II), Fe(III), Ni(II), Cu(II), Cd(II) and Pb(II) were found to be 4.1, 0.13, 2.7, 1.2, 0.19, 0.06 and 0.13 μg L -1 , respectively. The developed method was utilized for preconcentration and determination of Mn(II), Fe(III), Ni(II), Cu(II), Cd(II) and Pb(II) in tap water, rain water, and stream water, and of Ni(II), Cd(II) and Pb(II) in a certified reference material (RM 8704 Buffalo river sediment) by flame atomic absorption spectrometry (FAAS).

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Section: Introductionmentioning

confidence: 99%

Preconcentration of trace elements by using 1-(2-Pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS

Tokalıoğlu

Büyükbas

Kartal

2006

J. Braz. Chem. Soc.

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“…6 In the last fifteen years, several spectrophotometric method have been successfully employed in the individual and simultaneous determinations of nickel in mixtures. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Dioxolenes are derived from 1,2-di-oxo-benzene and can assume the quinone (L), radical-anion semiquinone (L 1-) and di-anion catecholate (L 2-), structures, Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Determination of Ni(II) in metal alloys by spectrophotometry UV-Vis using dopasemiquinone

Barreto

Scarmínio

et al. 2010

Quím. Nova

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Recebido em 12/2/09; aceito em 10/7/09; publicado na web em 13/11/09 A spectrophotometric method was proposed for Ni(II) determination in alloys using a dopa-semiquinone (L. The optimal conditions for the determination were: wavelength 590 nm, temperature 25 °C, reaction time 45 min and pH 7.5. The Beer's law was obeyed for nickel from 3.33 x 10 -5 to 1.78 x 10 -4 mol L -1. The method was applied to complex samples, such as inox, nickel-titanium and cobalt-chromium alloys. A study of the potential interferents revealed that Mn was the major interferent. The limit of detection and quantification were 2.88 x 10 -5 mol L -1 and 3.06 x 10 -5 mol L -1 , respectively.

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“…Styrene-divinylbenzene is commercially available in the Amberlite XAD resin series. Many ligands were covalently coupled with a polymer backbone, such as 4,5-dihydroxy-1,3-benzenedisulfonic acid [18], pyrocatechol violet [19], o-aminobenzoic acid [20], or 3,4 dihydroxybenzoic acid [21,22].…”

Section: Introductionmentioning

confidence: 99%

Solid phase selective separation and green preconcentration of Cu, Zn, Pb and Cd in drinking water by using novel functionalized resin

2009

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Abstract:A new solid -phase extraction sorbent was developed based on stepwise anchoring of two ligand molecules for the determination of copper, zinc, lead and cadmium in drinking water by flame AAS. Amberlite XAD-2 functionalized with 4´-(2-hydroxyphenylazo)-3´-methyl-1´-phenyl-2´-pyrazolin-5´-one (HPAPyr) was utilized for preconcentration/separation of these elements. The sorbent was prepared by two successive azo coupling reactions. First, 2-aminophenol was anchored to the amino groups in the resin resulted from nitration followed by reduction. Then, the resulted 2-aminophenol functionalized resin was further diazotized and coupled to the pyrazolone compound and the final product HPAPyr-XAD-2 was characterized by IR and elemental analysis. The optimum pH range for sorption, shaking time, exchange capacity, sample flow rate, preconcentration factor and interference from co-existing ions were investigated. All metal ions were quantitatively desorbed from the resin by 4.5 mol L -1 nitric acid solution. The sorbent provides limit of detection within the range 0.9-3.3 μg L -1 and concentration factor up to 250. The procedure was validated by analysis of certified material NIST-SRM 1577b. Application to drinking water showed satisfactory results with relative standard deviation RSD ≤ 8.5%. Warsaw and Springer-Verlag Berlin Heidelberg. © Versita

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A new functionalized resin and its application in preconcentration system with multivariate optimization for nickel determination in food samples

Cited by 50 publications

References 33 publications

Preconcentration of trace elements by using 1-(2-Pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS

Preconcentration of trace elements by using 1-(2-Pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS

Determination of Ni(II) in metal alloys by spectrophotometry UV-Vis using dopasemiquinone

Solid phase selective separation and green preconcentration of Cu, Zn, Pb and Cd in drinking water by using novel functionalized resin

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