Determination of some trace elements in high-purity aluminium, zinc and commercial steel by AAS after preconcentration on amberlite XAD-1180 resin

Tokahoglu, Serife; Kartal, Şenol; Elçi, Latif

doi:10.1007/bf01242736

Cited by 23 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…31 Amberlite XAD-1180 resin has been used for the preconcentration and separation of trace metals in various samples in our previous works. 31,32 1-(2-pyridylazo)-2 naphthol forms stable complexes with many transition metals of interest; it is one of the most extensively used complexing agents for trace element analysis. Essentially it is insoluble in water and in alkaline solutions in which [OH -] is < 0.01 mol L -1 .…”

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.

View full text Add to dashboard Cite

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).

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…The eluate was evaporated to near dryness and the residue was dissolved in 0.7 mL of 2 mol L -1 nitric acid. Cu, Pb and Ni were determined by FAAS using an injection method, 17,18 while the determinations of Cr and Cd were performed by GFAAS.…”

Section: Separation Of Metal-humic Complexes From Free Metal Ionsmentioning

confidence: 99%

Speciation and Determination of Heavy Metals in Lake Waters by Atomic Absorption Spectrometry after Sorption on Amberlite XAD-16 Resin

2000

View full text Add to dashboard Cite

The trace heavy metals existing in freshwaters are present in various physico-chemical forms, which include simple hydrated ions, hydroxo complexes, inorganic and organic complexes, and colloidal particles. 1 These physico-chemical forms can effectively change their bioavailabilities and toxicities. For example, chromium(III) is an essential element, whereas chromium(VI) is highly toxic and even carcinogenic. Arsenic(III) is much more toxic than arsenic(V).2,3 The heavy metal speciation, therefore, arouses substantial interest in water analysis because the geochemical behavior and biological effects of heavy metals depend greatly on their physicochemical forms. The chemical speciation has been a topic of increasing research interest in geochemical, biological and environmental sciences, and waste water treatment processes.Humic and fulvic acids are also known to interact with various metal ions, hydrated metal oxides, clay minerals and organic compounds. 1 Humic substances, major organic constituents of natural waters, interact strongly with various heavy metals to form humic complexes and affect adsorption-desorption behavior of metals. Physico-chemical forms of metal humic-complexes, however, are complicated because they may exist alone or be adsorbed on other colloidal particles. 4 Up to now, methods such as coprecipitation, 5,6 sorption on adsorbent resins 7-10 and separation by ion exchange resins 4,11,12 have been used in determining metal ions both free and bound to humic substances present in natural and waste waters. Among these techniques used in trace element determination, adsorption is one of the most widely used. For this purpose, commercially available Amberlite XAD copolymers [13][14][15][16] have been widely used as adsorbents suitable for multielement preconcentration from different matrices, because of their purity and good adsorption properties. Amberlite XAD-16 resin is an adsorbent based on polystyrene divinylbenzene-copolymer. It is used in continuous filtration for adsorption of water-soluble substances. XAD-16 has excellent physical resistance, hydraulic characteristics and thermal stability. In addition, it has high porosity, low polarity and the largest surface area (825 m 2 g -1 ) among the XAD series of Amberlite resins. Therefore, it was selected as an adsorbent resin, owing to these high performance characteristics. But it can show little swelling/shrinking upon changing between organic solvent and aqueous media (Rohm and Haas Co.).In the present work, determinations were carried out of metals bound to humic substances and to suspended particles, and of the free metal ions in water samples taken from different regions of Sultansazlıg ı, a wetland and wildlife refuge. Due to very low metal contents of natural water samples to be analyzed, enrichment procedures are often required. A column filled with Amberlite XAD-16 resin as a preconcentration means was used to determine the metals bound to humic substances and free metal ions. The measurements of the metal concentrations were pe...

show abstract

“…These include hydride generation inductivelycoupled plasma optical emission spectrometry (HG-ICP-OES), 4 electrothermal vaporization ICP mass spectrometry (ETV-ICP-MS), 5 atomic absorption spectrometry (AAS), 6,7 potentiometric stripping analysis (PSA), 8 anodic stripping voltammetry 9,10 and spectrophotometry. 11 However, due to the presence of bismuth in environmental and biological samples at low levels, its separation from other elements present and also the use of a preconcentration is usually necessary.…”

Section: Introductionmentioning

confidence: 99%

Cloud point extraction spectrophotometric determination of trace quantities of bismuth in urine

Afkhami¹,

Madrakian²,

Siampour³

2006

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Investigamos o processo de extração no ponto-nuvem para bismuto, a partir de soluções aquosas, usando o surfactante não-iônico Triton X-114. O método consiste na reação de complexação do Bi(III) com vermelho de bromopirogalol e extração mediada pelo sistema micelar. As condições ótimas de extração e reação (pH, concentração de reagentes, efeito do tempo de incubação etc.) foram estudadas, e as características analíticas do método (por exemplo, limite de detecção, intervalo de linearidade) foram estabelecidas. Uma resposta linear para o íon Bi(III) foi obtida no intervalo de 4,60-120,0 ng mL -1 . O limite de detecção obtido foi de 2,0 ng mL -1 . O efeito da interferência de alguns ânions e cátions foi também testado. O método foi aplicado para a determinação de bismuto em amostras de urina humana.A cloud point extraction process using the nonionic surfactant Triton X-114 to extract bismuth from aqueous solutions was investigated. The method is based on the complexation reaction of Bi(III) with bromopyrogallol red (BPR) and micelle-mediated extraction of the complex. The optimal extraction and reaction conditions (e.g., pH, reagent concentration, effect of time) were studied, and the analytical characteristics of the method (e.g., limit of detection, linear range) were obtained. Linearity was obeyed in the range of 4.60-120.0 ng mL -1 of Bi(III) ion. The detection limit of the method was 2.0 ng mL -1 of Bi(III) ion. The interference effect of some anions and cations was also tested. The method was applied to the determination of bismuth in human urine sample.

show abstract

Determination of some trace elements in high-purity aluminium, zinc and commercial steel by AAS after preconcentration on amberlite XAD-1180 resin

Cited by 23 publications

References 12 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

Speciation and Determination of Heavy Metals in Lake Waters by Atomic Absorption Spectrometry after Sorption on Amberlite XAD-16 Resin

Cloud point extraction spectrophotometric determination of trace quantities of bismuth in urine

Contact Info

Product

Resources

About