Inductively coupled plasma–optical emission spectrometry/mass spectrometry for the determination of Cu, Ni, Pb and Zn in seawater after ionic imprinted polymer based solid phase extraction

Otero-Romaní, Jacobo; Moreda-Piñeiro, Antonio; Bermejo-Barrera, Pilar; Martín‐Esteban, Antonio

doi:10.1016/j.talanta.2009.04.066

Cited by 134 publications

(52 citation statements)

References 34 publications

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“…6,7 These polymers have a high affinity and selectivity for the target ion, are easy to produce, are low cost and stable. Separation/ preconcentration using IIPs has been employed, for example, in the separation of Fe 3+ from plant and water samples with a posterior determination by ICP OES, 7 of Dy 3+ from synthesized seawater and spectrophotometric determination 8 , and of Cu 2+ , Ni 2+ , Pb 2+ and Zn 2+ from celery samples with determination by ICP-MS. 9 In spite of the outstanding performance by IIPs for metal ion adsorption, a survey of the literature shows that few studies have been devoted to zinc preconcentration and further determination by FAAS. A Zn(II) IIP was recently prepared with acryloyloxyquinoline (8-AOQ) as the monomer.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Santos¹,

Bezerra²,

Lima³

et al. 2014

Quím. Nova

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In this paper, we describe the synthesis of an ion imprinted polymer (IIP) by homogeneous polymerization and its use in solid-phase to extract and preconcentrate zinc ions. Under optimal conditions (pH 5.0, preconcentration flow rate of 12.0 mL min -1 , and eluted with 1.0 mol L −1 HNO 3 ) this procedure allows the determination of zinc with an enrichment factor of 10.2, and with limits of detection and quantification of 1.5 and 5.0 μg L −1 , respectively. The accuracy of our results was confirmed by analysis of tap water and certified reference materials: NIST 1570a (Spinach leaves) and NIST 1515 (Apple leaves).

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Santos¹,

Bezerra²,

Lima³

et al. 2014

Quím. Nova

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“…26 Entretanto, muitos estudos ainda devem ser realizados com intuito de aperfeiçoar as propriedades seletivas dos polímeros preparados pela técnica de impressão superfícial, pois em alguns casos os IIPs apresentam capacidade de retenção semelhantes aos NIPs, além de apresentarem baixa seletividade. 29,30 Os IIPs sintetizados por aprisionamento se baseiam na polimerização de monômeros vinilados que realizam ligações químicas com íon molde e com a matriz do polímero, via o grupo vinila, e agentes complexantes não vinilados, que reagem somente com íon molde, mas que, ao término da polimerização, são aprisionados dentro da matriz polimérica. As interações específicas entre o grupo funcional (presente no monômero e no agente complexante) conferem seletividade ao polímero.…”

Section: Polímeros Orgânicos Impressos Com íOnsunclassified

Polímeros impressos com íons: fundamentos, estratégias de preparo e aplicações em química analítica

Marestoni¹,

Sotomayor²,

Segatelli³

et al. 2013

Quím. Nova

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Recebido em 29/1/13; aceito em 18/5/13; publicado na web em 1/7/13 ION IMPRINTED POLYMERS: FUNDAMENTALS, PREPARATION STRATEGIES AND APPLICATIONS IN ANALYTICAL CHEMISTRY. Chemical imprinting technology has been widely used as a valuable tool in selective recognition of a given target analyte (molecule or metal ion), yielding a notable advance in the development of new analytical protocols. Since their discovery, molecularly imprinted polymers (MIPs) have been extensively studied with excellent reviews published. However, studies involving ion imprinted polymers (IIPs), in which metal ions are recognized in the presence of closely related inorganic ions, remain scarce. Thus, this review involved a survey of different synthetic approaches for preparing ion imprinted adsorbents and their application for the development of solid phase extraction methods, metal ion sensors (electrodes and optodes) and selective membranes.Keywords: imprinting technology; preconcentration; sensors. INTRODUÇÃOO desenvolvimento de novos materiais tem se expandido para diversos campos do conhecimento e trazido grandes inovações em diversas áreas. Neste sentido, o estudo de novos materiais pode contribuir significativamente na área de química analítica, introduzindo maior seletividade e sensibilidade aos métodos analíticos conhecidos, por exemplo, através da variação da composição química, das dimensões físicas e da inclusão de componentes biológicos fazendo com que estes apresentem propriedades novas, o que potencializa uma ampla aplicabilidade. Tais materiais incluem os materiais híbridos, nanomateriais e materiais biomoleculares.1 Diante de uma nova realidade, na qual se tem buscado o estabelecimento de padrões de concentrações cada vez menores de poluentes em amostras de interesse ambiental, farmacêutica, clínica e alimentí-cia, métodos alternativos vêm sendo investigados, dentre os quais o uso de materiais adsorventes, que promovam a retenção seletiva e reversível do analito. A determinação de espécies químicas em concentrações baixas (em geral ≤ µg L -1 ) constitui, até os dias atuais, um dos grandes desafios para os químicos analíticos, apesar dos mesmos terem em mãos técnicas significativamente precisas, seletivas e sensíveis.2 Em face à concentração baixa do elemento de interesse e, ainda aos efeitos da matriz, em muitos casos torna-se uma tarefa difícil a determinação direta de concentrações baixas de analitos em amostras. Sendo assim, etapas de pré-concentração se fazem necessárias a fim de viabilizar a análise. Em determinadas situações, as etapas de pré-concentração além de conferir aumento de sensibilidade do método, deve também garantir seletividade ao sistema em estudo. Isto ocorre porque, em geral, os níveis dos analitos são muito baixos, da ordem de µg L -1 , na presença de concentrações altas de concomitantes, da ordem de g L -1 . Sendo assim, os tratamentos prévios da amostra, conferidos por etapas de extração e/ou pré-concentração, visam eliminar o interferente e/ou pré-concentrar o analito.As principais estratégias ana...

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“…IIPs have been used for other application than solid phase extraction such as catalytic applications [15] , chromatographic stationary phases [16] , membrane separations [17] and sensors [18][19][20] . IIPs mainly used for the selective SPE of the trace metal pollutants from complex matrices [21][22][23][24][25][26][27][28][29][30][31][32][33] . This selective extraction and clean up cannot possible with the conventional sorbent.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, for ion imprinting of zinc ions, following monomers have been used: styrene [26] , methacrylic acid [23] , 8-acryloyloxyquinoline [28] , 4-vinylpyridine [24] , 2-(diethylamino) ethyl methacrylate [22] , 4-vinylpyridine [29] . While the following chelating agents have been used for the selective interaction with zinc ions: oxine [26] , 3,5,7,20,40-pentahydroxyflavone [23] , 2,2'-bipyridyl [24] , 8-hydroxyquinoline [22] , 2,2'-bipyridyl [29] .…”

Section: Introductionmentioning

confidence: 99%

“…While the following chelating agents have been used for the selective interaction with zinc ions: oxine [26] , 3,5,7,20,40-pentahydroxyflavone [23] , 2,2'-bipyridyl [24] , 8-hydroxyquinoline [22] , 2,2'-bipyridyl [29] . Salicylic acid has been extensively used for the extraction of metal ions as a difunctional chelating reagent [34][35][36][37] .…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of Zn(II) ion-imprinted polymer based on salicylic acrylate for recovery of Zn(II) ions

2016

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SbstractThis work describes the synthesis of new ion-imprinted polymers (IIPs) for selective solid phase extraction of Zn(II) ions from aqueous samples. IIPs were synthesized by copolymerization of salicylic acrylate (SA) as a functional monomer and ethylene glycol dimethacrylate (EGDMA) as a crosslinker in the presence of 2,2'-azobisisobutyronitrile (AIBN) as an initiator. The template ions were removed from IIPs particles by leaching with 0.1 M Ethylenediaminetetraacetic acid (EDTA) which leaves cavities in the particles with the capability of selective extraction of the Zn(II) ions. The monomer and the polymer after synthesis have been characterized by 1 H NMR, 13 C NMR and FT-IR studies. The effect of the pH on the extraction efficiency of Zn(II) ions was studied and optimized in pH around 6. The selectivity of the synthesized IIPs was studied in the presence of Co(II), Cd(II) and Ni(II) ions, and the IIPs showed higher affinity for Zn(II) in the presence of other interfering ions.

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Inductively coupled plasma–optical emission spectrometry/mass spectrometry for the determination of Cu, Ni, Pb and Zn in seawater after ionic imprinted polymer based solid phase extraction

Cited by 134 publications

References 34 publications

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Polímeros impressos com íons: fundamentos, estratégias de preparo e aplicações em química analítica

Preparation and characterization of Zn(II) ion-imprinted polymer based on salicylic acrylate for recovery of Zn(II) ions

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