Preconcentration of trace elements in sea water with poly (acrylaminophosphonic - dithiocarbamate) chelating fiber for their determination by inductively coupled plasma mass spectrometry

Wen, Bin; Shan, Xiao-quan; Liu, Ruixia; Tang, Hongxiao

doi:10.1007/s002160051183

Cited by 59 publications

(12 citation statements)

References 26 publications

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“…In our previous work, poly(acrylaminophosphonic dithiocarbamate) chelating fiber was developed and used to preconcentrate trace elements from seawater [2,19]. The synthesis was, however, time-consuming -approximately four days.…”

Section: Introductionmentioning

confidence: 99%

Improved immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber and application of the material to the determination of trace metals in seawater by inductively coupled plasma mass spectrometry

Wen

Shan

2002

Analytical and Bioanalytical Chemistry

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A modified synthetic method has been developed for immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber. The synthetic conditions, e.g. reagent concentration, reaction temperature and time, were optimized. The features of the newly-modified fiber are higher exchange capacity compared with most other materials containing immobilized 8-hydroxyquinoline, better mechanic characteristics, high stability at both high and low pH, and ease of synthesis. This modified fiber can concentrate and separate trace metals from matrices with higher concentrations of alkali and alkaline earth elements. To validate the characteristics of the modified fiber, trace metals Ag, Be, Cd, Co, Cu, Mn, Ni, Pb, and Zn in the certified reference materials river water (SLRS-4) and seawater (CASS-4, NASS-5, SLEW-3) were preconcentrated before determination by inductively coupled plasma mass spectrometry. Good agreement was obtained between the data obtained by this method and the certified values.Keywords 8-Hydroxyquinoline immobilized polyacrylonitrile fiber · Trace metals · Sea water · Inductively coupled plasma mass spectrometry IntroductionInductively coupled plasma mass spectrometry (ICP-MS) is one of the most accurate, sensitive, and reliable techniques for the determination of trace metals and has been widely used for determination of trace elements in environmental samples. Its low tolerance of dissolved solids (<0.1%, w/v), however, prohibits the direct analysis of trace elements in seawater by ICP-MS, because of the problem of salt deposition on the torch, sampling interface, or ion lenses. In ICP-MS interferences fall broadly into two groups, "spectroscopic", and "non-spectroscopic" or "matrix effects". The extent of the interferences depends on many factors including extraction geometry, plasma and nebulizer system operating conditions, and, most importantly, on the nature of the analytes and matrix. To minimize interferences many approaches have been recommended, including instrument optimization, use of mixed gases and/or "dry" sample introduction, sample dilution, sample-matrix matching, and use of internal standards, etc.[1]. It should be pointed out that these interferences are usually related to the nature of the sample matrix and much can be done to minimize or even eliminate potential problems by careful sample preparation. It must be admitted that for simultaneous multi-element determination by ICP-MS in a complex matrix such as seawater separation and/or pre-concentration methods are the first choice [1,2,3].8-Hydroxyquinoline is a well-characterized chelating organic ligand. It can form covalent compounds with over 60 metal ions under controlled pH conditions, and its preference for transition and heavy metals to alkali and alkaline-earth elements is well known [4]. Trace elements are usually chelated with solution of 8-hydroxyquinoline and then extracted with organic solvent [5]. In comparison with the most commonly used solvent extraction enrichment procedures, however, column solid-phase extraction...

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Section: Introductionmentioning

confidence: 99%

Improved immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber and application of the material to the determination of trace metals in seawater by inductively coupled plasma mass spectrometry

Wen

Shan

2002

Analytical and Bioanalytical Chemistry

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“…Figures 6 and 7 show the effects of initial concentration (5,10,20,30, and 40 mg/L solutions) of the metal ions uptake onto the polymers. The results indicated that the most suitable metal concentration for maximum recovery of both metal ions was 5 mg/L.…”

Section: The Effect Of Initial Concentration On Adsorptionmentioning

confidence: 99%

“…3,4 In recent years, selective metal ion removal has been widely carried out using specific ligand-modified polymers for the preconcentration of some toxic metal ions. [5][6][7][8][9][10] Some organic polymer sorbents such as Amberlite XAD, Separon, and Polysorb are well known from the literature. 11 Recently, styrenedivinylbenzene-based insoluble resins (e.g., Lewatit), gelatinous and macroporous copolymers, and crosslinked polymer adsorbents gained vital importance because of their ability to remove high quantities of ions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and metal ions sorption properties of styrene‐based polymers

Deveci

Ahmetli

Ersöz

et al. 2009

J of Applied Polymer Sci

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Atactic polystyrene (PS) was chemically modified with maleic (MAH), succinic (SAH), and phtalic (PhAH) anhydrides. Styrene was copolymerized with acrylic (AA) and methacrylic acids (MA). Amount of carboxyl groups (%) bound to polymers was determined in the range of 6.9-25.9. Different modified polystyrenes (MPS) and styrene copolymers were used in the experiments to study Cu(II) and Zn(II) ions adsorption probability and their comparison. Sorption capacity of the polymers for the metal ions were investigated in aqueous media containing different amounts of these ions (5-40 mg/L) and at different pH values (2.0-6.0). Adsorption behavior of heavy metal ions could be modeled using both the Langmuir and Freundlich isotherms. It was found that the adsorption capacity is highest at pH value of 6, whereas it decreases as the pH value decreases at temperature 25C AE 1 C for 240 min. The results obtained from the adsorption capacity experiments for Cu(II) and Zn(II) ions were 3. 47-5.45 and 5.42-6.85 mg/g, respectively. The affinity order of polymers for both metal ions was observed as follows: SMAC > SAAC > MPS with MAH > MPS with SAH > MPS with PhAH. The maximum adsorption capacities of SMAC were 6.85mg/g for Zn(II) and 5.45 mg/g for Cu(II).

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“…Amberlite XAD-2 was modified by different chelating agents such as o-vanilline thiosemicarbazone [23], dimethylglyoxal bis(4-phenyl-3-thio-semicarbazone), salicylic acid [24], alizarin red-S [25], aminophosphonic or dithiocarbamate group containing polyacrylonitrile [26].…”

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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Preconcentration of trace elements in sea water with poly (acrylaminophosphonic - dithiocarbamate) chelating fiber for their determination by inductively coupled plasma mass spectrometry

Cited by 59 publications

References 26 publications

Improved immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber and application of the material to the determination of trace metals in seawater by inductively coupled plasma mass spectrometry

Improved immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber and application of the material to the determination of trace metals in seawater by inductively coupled plasma mass spectrometry

Synthesis and metal ions sorption properties of styrene‐based polymers

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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