Synthesis of a chitosan-based chelating resin and its application to the selective concentration and ultratrace determination of silver in environmental water samples

Katarina, Rosi Ketrin; Takayanagi, Toshio; Oshima, Mitsuko; Motomizu, Shoji

doi:10.1016/j.aca.2005.11.010

Cited by 100 publications

(58 citation statements)

References 30 publications

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“…6 Since concentrations of trace elements in seawater are very low in comparison to those of major (matrix) elements such as Na, K, Mg and Ca, the separation of matrix elements and preconcentration of trace elements should be performed prior to their determination by ICP-MS/AES. As the separation and/or preconcentration methods, coprecipitation, 7-10 chelating resin adsorption, [11][12][13][14][15][16][17][18][19] and solvent extraction 20,21 have been widely employed in seawater analysis. Among them, it appears that the chelating resin method is one of most suitable techniques for simultaneous multielement preconcentration due to its excellent ability to collect several elements simultaneously, accompanied with high enrichment factor and high collection efficiency.…”

Section: Introductionmentioning

confidence: 99%

On-line Preconcentration System Using Mini-column Packed with a Chelating Resin for the Characterization of Seasonal Variations of Trace Elements in Seawater by ICP-MS and ICP-AES

et al. 2006

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An on-line column preconcentration technique coupled with inductively coupled plasma-mass spectrometry (ICP-MS) and -atomic emission spectrometry (ICP-AES) was developed using a mini-column (ca. 3 mm i.d., 40 mm length), that was packed with chelating resin (0.2 g) of iminodiacetic acid groups, Muromac A-1. After the preconcentration step, the column was washed with ammonium acetate buffer (pH 5.5) and water to remove major elements, such as Ca and Mg, and then eluted with 4 ml of 2 mol l -1 nitric acid. Eleven trace elements (Al, V, Fe, Co, Ni, Cu, Zn, Cd, Pb, Th and U) in seawater were determined by ICP-MS/AES. Recoveries for most of the elements tested were over 90%, although those for Al, V and Th were around 70%. The accuracy of the proposed method was evaluated by analyzing a standard reference material of seawater (NASS-4, NRC Canada). The values of Fe, Co, Ni, Cu, Zn, Cd and Pb obtained with the present method showed good agreement with the certified values as judged from the standard deviation. The method was successfully applied to characterize seasonal variations of trace elements in deep seawater (DSW) and surface seawater (SSW). In addition, no serious decrease in analytical performance of the present column system was observed during the experimental period of about 1 year.

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Section: Introductionmentioning

confidence: 99%

On-line Preconcentration System Using Mini-column Packed with a Chelating Resin for the Characterization of Seasonal Variations of Trace Elements in Seawater by ICP-MS and ICP-AES

et al. 2006

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“…Compared with the ethylenediamine-type chitosan resin which can selectively adsorb silver from pH 1 to 8, as reported in a previous paper, 30 the proposed resin, synthesized by introducing an acetyl group to the amino group of the ethylenediamine-type chitosan, EDTriA-type chitosan resin, has a totally different adsorption behavior. There are 26 elements that can be adsorbed with greater than 95% on the EDTriA-type chitosan resin, including silver.…”

Section: Adsorption Behavior Of Elements On Edtria-type Chitosan Resinmentioning

confidence: 99%

“…The EDTriA-type chitosan resin was synthesized by modifying ethylenediamine-type chitosan 30 using bromoacetic acid, as follows. Bromoacetic acid, 3.9 g (28 mmol) was dissolved in 16 mL of ice-cold water.…”

Section: Procedures For Synthesis Of Edtria-type Chitosan Resinmentioning

confidence: 99%

Sample Pretreatment Using Chitosan-based Chelating Resin for the Determination of Trace Metals in Seawater Samples by Inductively Coupled Plasma-Mass Spectrometry

et al. 2008

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Trace metals in aquatic systems have become a significant topic of concern in various fields associated with water quality, as well as a concern of the general public. Among several kinds of water samples, the determination of trace metals in seawater is the most interesting challenge in analytical chemistry, because of high concentrations of matrix and very low concentrations of analytes.Although inductively coupled plasma-mass spectrometry (ICP-MS) provides most accurate, sensitive and reliable detection for trace metals, its low tolerance of dissolved solids prohibits the direct analysis of trace metals in seawater samples by using this instrument. In the determination of trace metals in seawater by ICP-MS, the transition metals are interfered by polyatomic ions derived from alkali and alkalineearth metals, such as oxide and hydroxide. 1-3 Therefore, preconcentration and matrix separation are required prior to the determination of trace metals by ICP-MS.Sample pretreatment for the collection/concentration of analytes and the removal of matrix and interfering substances using chelating resin, such as commercially available iminodiacetate chelating resin, known as Chelex-100, 4,5 Muromac A-1 6-9 and Toyopearl AF Chelate 650M, [10][11][12] have been used for the determination of transition metals or rare-earth elements in seawater by ICP. The resins, however, can separate only some parts of alkali and alkaline-earth metals from analytes, and such sample matrix as Na can remain with analytes and interfere with the determination of trace metals. Several kinds of chelating resins have been proposed for the determination of transition metals or rare-earth elements in seawater samples. 13-18Since ICP-MS enables multi-element detection simultaneously, it is desirable to determine as many trace elements as possible, including transition metals and rareearth elements, for a comprehensive study of the distribution of trace elements in a marine environment.Among the chelating reagents, ethylenediamine tetraacetic acid (EDTA) is one of the most stable chelating reagents, and can form chelates with a number of trace metal ions. Therefore, EDTA is a suitable chelating moiety for a multianalyte adsorption. Some chelating resins that possess the EDTA moiety have been synthesized using several kinds of polymer matrixes, such as cellulose, 19 glycidyl methacrylate divinylbenzene, 20 or chitosan. [21][22][23] Nowadays, a chelating resin that possesses the EDTA moiety, Nobias Chelate-PA1, has been commercially available (Hitachi High Technologies, Tokyo, Japan). The resin has a good adsorption ability of transition and rare-earth metals, and can separate them from alkali and alkaline-earth metals. However, a high concentration of nitric acid was necessary to recover analytes from the resin, acetone was necessary for cleaning the resin, and furthermore resin particles were very small, which makes it difficult to use in a batchwise or a column pretreatment method, because of the slow flow rate.We are mainly interested in a sorbent b...

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“…Cross-linked chitosan itself has been derivatized with several functional groups, and has been applied to solid phase extraction techniques; For example, cross-linked chitosan derivatized with serine moiety for U collection [26], leucine moiety for Mo collection [27], dithiocarbamate [28] and iminodi(methylphosponic acid) [29] moieties for trace elements collection, N-methyl-D-glucamine moiety for B collection [30], 3,4-diaminobenzoic acid moiety for As and Se collection [31], and ethylenediamine moiety for Ag collection [32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry

Hakim

Sabarudin

Oshima

et al. 2007

Analytica Chimica Acta

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A novel chelating resin functionalized with serine diacetic acid moiety was synthesized by using chitosan as base material, and applied to the collection/concentration of trace elements in environmental water samples, followed by the determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan serine diacetic acid (CCTS-SDA), showed good adsorption behavior toward trace amounts of Cd, Pb, Cu, Ni, V, Ga, Sc, In, and Th in a wide pH range.Additionally, rare earth elements also can be retained on the resin at neutral pH region. The adsorbed elements can be easily eluted with 1 mol L -1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-SDA was packed in a mini-column, which was then installed in a computer-controlled auto-pretreatment system (Auto-Pret System) for on-linetrace elements collection and determination with ICP-AES. Experimental parameters which related to the improvement of sensitivity and reproducibility were optimized. The limit of detections (LOD) for 13 elements were found to be in sub-ppb level. The proposed method with CCTS-SDA resin was successfully applied to the determination of trace elements in river water samples. The method was validated by determining a certified reference material of river water, SLRS-4.

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Synthesis of a chitosan-based chelating resin and its application to the selective concentration and ultratrace determination of silver in environmental water samples

Cited by 100 publications

References 30 publications

On-line Preconcentration System Using Mini-column Packed with a Chelating Resin for the Characterization of Seasonal Variations of Trace Elements in Seawater by ICP-MS and ICP-AES

On-line Preconcentration System Using Mini-column Packed with a Chelating Resin for the Characterization of Seasonal Variations of Trace Elements in Seawater by ICP-MS and ICP-AES

Sample Pretreatment Using Chitosan-based Chelating Resin for the Determination of Trace Metals in Seawater Samples by Inductively Coupled Plasma-Mass Spectrometry

Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry

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