Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

Lee, Kyue-Hyung; Oshima, Mitsuko; Takayanagi, Toshio; Motomizu, Shoji

doi:10.2116/analsci.16.731

Cited by 27 publications

(10 citation statements)

References 37 publications

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“…Since the certified values of Ti, V, Ga, Mo, W and Bi are still not available in the river certified reference materials, the values obtained by this work are compared with the literature values (see Tables 3 and 4). [15][16][17] The analytical data obtained by the proposed method are in good agreement with the literature values.…”

Section: Adsorption/concentration and Determination Of Oxoanions In Rsupporting

confidence: 86%

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Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column

et al. 2000

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Chitosan, an N-deacetylation product of chitin, is one of the useful chelating polymers, and is capable of adsorbing a number of metal ions. Muzzarelli et al. have reported that chitosan without cross-linking can adsorb transition-metal ions from aqueous solutions at neutral pH, 1,2 and other researchers have reported that chitosan can adsorb Hg(II), Cu(II), Cr(III), Pb(II), UO2 + and Cd(II). [3][4][5][6][7][8] However, the adsorption behavior of metal ions has not yet been investigated in detail, though chitosan seems to possess a promising ability of metal collection.Non-cross-linked chitosan can be easily soluble in some acidic media. Such a characteristic is one of the serious disadvantages from a practical viewpoint of metal collection and concentration. Therefore, several types of chemically cross-linked chitosan have been prepared and their metal adsorption properties have been examined. Cross-linking can make chitosan hardly soluble in acidic media. Ohga et al. reported that cross-linked chitosan, which was prepared by cross-linking with (chloromethyl)oxyrane after complexation of chitosan with metal ions, can act as effective adsorbents for Cu(II) and Hg(II), 9 and Inoue et al. reported the adsorption behavior of 15 elements on cross-linked chitosan by a batchwise method.10,11 Koyama et al. and Kurita et al. also synthesized a cross-linked chitosan with glutaraldehyde, and examined the adsorption behavior of Cu. 12,13 Further, Rorrer et al. examined adsorption isotherms of Cd(II) on porous chitosan beads crosslinked with glutaraldehyde at 25˚C and pH 6.5 over the concentration range 1 -1690 mg l -1 .14 Such studies mainly examined the adsorption behavior of several metal ions at ppm levels on a cross-linked chitosan by batchwise equilibration techniques, and did not aim to collect and concentrate trace amounts of metal ions at ppb and subppbs (1 ppb = 1 ng ml -1 ). Further, few papers have reported so far about the desorption and recovery of metal ions adsorbed on cross-linked and non-cross-linked chitosan.In this work, the authors examined in detail, for the first time, the adsorption behavior of a number of elements (60 elements) at the 10 ng ml -1 level by a column pretreatment method using commercially available high-porous cross-linked chitosan beads (CHITOPEARL AL-01) (Fuji Spinning Co., Ltd. Tokyo, Japan), and found the useful ability of the cross-linked chitosan as a packing material for collecting and concentrating trace amounts of metal ions in river-water samples. Furthermore, the determination of six oxoanions in river-water samples (reference materials distributed by the Japan Society for Analytical Chemistry: JAC 0031 and JAC 0032) was carried out using air-segmented flow injection/ICP-MS (AFI/ICP-MS) after preconcentration with a chitosan column. The analytical results obtained for the determination of oxoanions agreed well with other literature values. [15][16][17] Experimental InstrumentationThe ICP-MS system used for the determination of metal ions was a Model SPQ 8000H (Seiko Instrum...

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Section: Adsorption/concentration and Determination Of Oxoanions In Rsupporting

confidence: 86%

“…The analytical results obtained for the determination of oxoanions agreed well with other literature values. [15][16][17] …”

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Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column

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“…Commercially available chitosan's potential in the adsorption of heavy metals such as zinc, copper, cadmium and lead from aqueous solutions under various physicochemical conditions was investigated by Bassi et al (2000). A new technique for preconcentration of trace elements and matrix elimination with a chitosan-based chelating resin was proposed as a useful pretreatment prior to measurements by ICP-MS. A small volume of the sample solution (80µ1) was discretely introduced into the nebulizer of ICP-MS using a segment flow injection (SFI) system; a maximum of fifteen elements were simultaneously measured by this single injection (Lee et al, 2000).…”

Section: Waste Treatment and Purification Of Watermentioning

confidence: 99%

“…Water samples from a zinc mining site were analyzed using ICP-MS, which is a powerful detection system for elemental analysis at very low concentrations (trace and ultratrace level) (Lee et al, 2000). Since ICP-MS has a very low detection limit and a very wide analytical concentration range, it is often used for elemental analysis (Harada and Hatanaka, 1998) and studies on environmental materials (Yamasaki and Tsumura, 1992; Lee et al, 2000).…”

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Use of chitosan for the removal of metal ion contaminants and proteins from water

2007

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“…methods using chelating resins, such as a batch method with Chelex-100, 14 a column method with chelating beads, 15 and a filtration method with a chelating disk, 16 have been developed to improve the sensitivity as well as to effect the elimination of interfering sample matrix prior to the ICP-MS measurement.…”

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Determination of Heavy Metals and Rare Earth Elements in Environmental Samples by ICP-MS after Solid Phase Preconcentration with Chelating Resin Fibers and Anion Exchanger Filters

et al. 2004

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The determination of trace-or ultra-trace amounts of elements becomes more and more important in fields such as environmental, biological, and material sciences.1-3 However, it is very difficult to determine trace-and ultra-trace elements directly even by the highly sensitive instruments now available, because the detection sensitivity is sometimes insufficient and the effect of matrices in samples can not be neglected. The enrichment of analyte elements together with the elimination of matrices in sample solutions are important to achieve the sensitivity with less interference from matrices in atomic spectroscopic methods, such as AAS, ICP-AES and ICP-MS. Of these methods, ICP-MS is an ideal analytical method for the simultaneous and highly sensitive determination of trace elements in various samples. However, there still remain some problems which should be solved in order to fully demonstrate the performance of ICP-MS, such as isobaric interference due to polyatomic ions, 4-9 sensitivity changes caused by co-existing major elements, 10-13 and relatively low capacity of ions in detector. Therefore, it is necessary to separate analyte elements from major components to obtain more reliable analytical results.The preconcentration methods using chelating resins have increasingly replaced the traditional liquid-liquid extraction methods which generally use great amounts of organic solvents to obtain high enrichment factors and often require laborious processes. Various types of solid phase collection/concentration methods using chelating resins, such as a batch method with Chelex-100, 14 a column method with chelating beads, 15 and a filtration method with a chelating disk, 16 have been developed to improve the sensitivity as well as to effect the elimination of interfering sample matrix prior to the ICP-MS measurement.In this study, iminodiacetate type of chelating resin fibers and strong anion exchange type of filter were used for collecting metal ions and metal oxonium anions. The main purposes of the present pretreatment procedure are to enhance the adsorption efficiency for many metal species, to downsize the experimental conditions, such as samples, reagents, materials, vessels and wastes, and to perform the rapid and simple operation (less than 30 min excluding the dissolution process). Compared to the conventional pretreatment methods, such as solvent extraction, batchwise and column separation methods with chelating resins, the proposed method has several advantages: small sample size, less consumption of reagents, short pretreatment time, less contamination and easy portability. In a practical sense, 5 ml (pH 6.0) of 0.2 M (1 M = 1 mol dm -3 ) ammonium acetate was used for the conditionings of resins and filters, and 2 -20 ml of 1 M nitric acid was used as an eluent. The enrichment factor from 2.5 to 20-fold can be easily attained by varying sample volumes from 5 to 40 ml with 2 ml eluent.Sample digestions for peach leaves (NIST 1547) and pond sediment (NIES No. 2) were carried out by a microwave digestio...

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Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

Cited by 27 publications

References 37 publications

Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column

Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column

Use of chitosan for the removal of metal ion contaminants and proteins from water

Determination of Heavy Metals and Rare Earth Elements in Environmental Samples by ICP-MS after Solid Phase Preconcentration with Chelating Resin Fibers and Anion Exchanger Filters

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