A New Functionalized Resin for Preconcentration and Determination of Cadmium, Cobalt, and Nickel in Sediment Samples

Lemos, Valfredo Azevedo; Nascimento, Geisa Santos do; Nunes, Leane Santos

doi:10.1007/s11270-014-2281-6

Cited by 15 publications

(8 citation statements)

References 25 publications

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“…The limit of detection (LOD) and the relative standard deviation (RSD, n = 6) of Cd were 0.1 µg/L and 1.0% with a preconcentration factor of 10, respectively. The LOD that was obtained in this study was the same as that reported by using resin for preconcentration [14], both are one magnitude smaller than the value obtained by using amino-functionalized mesoporous sorbent for Cd(II) preconcentration [22].…”

Section: Limit Of Detectionsupporting

confidence: 76%

“…Therefore, preconcentration is necessary during analytical procedures [5,13]. Adsorbents, like chelating resins [14], mesoporous sorbent [15], etc., have been investigated for the preconcentration of Cd(II) in water samples. However, a desorption process was needed after preconcentration with these solid adsorbents, which made the analytic process complicated, time-consuming, and the recovery ratio was not good because of the incomplete desorption.…”

mentioning

confidence: 99%

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The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Lü

Zhang

2020

Applied Sciences

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Nanomaterials have been applied in the analysis of trace contaminants in aquatic samples; however, the adsorption affinity of heavy metal ions to metallic oxide nanoparticles is low. Meso-2,3-dimercaptosuccinic acid-polydopamine-zinc oxide (DMSA/PDA/ZnO) was synthesized through a facile self-assembly process for enhancing the adsorption capacity of ZnO to cadmium cation (Cd(II)). A method for the analysis of trace Cd(II) in water samples was developed while using dimercaptosuccinic acid/Polydopamine/zinc oxide (DMSA/PDA/ZnO) as an adsorbent and atomic absorption spectrometry (AAS) as a means of determination. The results demonstrate that the adsorption ratio of DMSA-PDA-ZnO to 1 mg/L Cd(II) is around 95% at pH 6.0–8.0 with a contact time of 31 h, and the enrichment rate can be more than 98% with the dosage of DMSA-PDA-ZnO exceeding 1.0 g/L. The adsorption isotherm of Cd(II) to DMSA/PDA/ZnO fits the Langmuir equation well, and the saturated adsorption of DMSA-PDA-ZnO to Cd(II) is 28.5 mg/g. The detection limit (3σ) of this method is 0.1 μg/L, with a relative standard deviation of 1%. Additionally, this method presents satisfactory performance with a recovery rate of 86−90% when applied to the detection of Cd(II) in environmental water samples.

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Section: Limit Of Detectionsupporting

confidence: 76%

mentioning

confidence: 99%

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Lü

Zhang

2020

Applied Sciences

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“…The tolerance limit of ± 5% was considered for the interfering species, which is commonly applied in other studies. 36,37 Other species frequently present in the matrix such as alkali and alkaline earth metals do not form stable complexes under the optimized conditions for this system.…”

Section: Iip Selectivitymentioning

confidence: 97%

Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design

Felix¹,

Barreto²,

Novaes³

et al. 2018

J. Braz. Chem. Soc.

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This study describes the preparation of a novel ion-imprinted polymer (IIP) to apply preconcentration of cadmium ions in water samples of the Pontal Bay in Ilhéus, Brazil. First, cadmium ion was complexed with 2-(2-thiazolylazo)-p-cresol (TAC). Subsequently, there was the polymerization using ethylene glycol dimethacrylate and methacrylic acid monomers along with the radical azobisisobutyronitrile initiator. The mold ions were removed using 2:1 (v v-1) nitric acid. The thermal stability of the polymer was evaluated by thermogravimetry and the characterization was performed by Fourier transform infrared spectroscopy. The maximum adsorption capacity for IIP (q max = 84.75 mg g-1) could be described by the Langmuir isotherm. The variables: sample flow rate, pH and eluent (nitric acid) were optimized using Box-Behnken design with determination by flame atomic absorption spectrometry (FAAS). The enrichment factor, as well as the limits of detection and quantification (LOQ), were found to be 44, 0.14 and 0.46 μg L-1 , respectively. Selectivity was evaluated by using solutions containing Cd II , Cu II , Ni II , Pb II , Co II , SO 4 2-, and Clions. The concentration of cadmium ions in the samples varied between < LOQ to 1.25 μg L-1 .

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“…A vazão da amostra é importante porque está diretamente relacionada com o tempo de contato entre os analitos e o absorvente HDL (Lemos et al, 2015).…”

Section: Estudo Da Vazão De Pré-concentraçãounclassified

“…Uma vazão adequada/ótima para a eluição depende do quanto fortemente o analito está retido no sorvente e na força de dessorção do eluente. O estudo da vazão tem influência sobre a fase de pré-concentração e de eluição, uma vez que controla o tempo de contato entre a amostra, eluente e adsorvente(Lemos et al, 2015). Sabendo que a vazão do eluente na etapa de eluição pode A massa do adsorvente também foi avaliada por estar diretamente ligada a eficiência de extração, uma vez que define o número de sítios ativos para troca iônica.…”

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Estratégias de microextração em fases sólida e líquida para determinação de cobre e cromo em água empregando técnicas eletroanalíticas e espectrométricas

Néri¹

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Agradeço imensamente ao grande mestre e criador desse universo, que me deu a oportunidade de desfrutar desse imenso planeta, Deus! Agradeço também a Ele a oportunidade de gerar um filho o que tem dado mais sentido a minha vida e vontade incomensurável de ser feliz! À minha orientadora, Profª. Dra. Nívia Maria Melo Coelho pela orientação e pela confiança, pelas conversas e orientações, meu muito obrigada.

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A New Functionalized Resin for Preconcentration and Determination of Cadmium, Cobalt, and Nickel in Sediment Samples

Cited by 15 publications

References 25 publications

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design

Estratégias de microextração em fases sólida e líquida para determinação de cobre e cromo em água empregando técnicas eletroanalíticas e espectrométricas

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