Determination of rare earth elements in seawater by inductively coupled plasma mass spectrometry with on-line column pre-concentration using 8-quinolinole-immobilized fluorinated metal alkoxide glass

Kajiya, Tasuku; Aihara, Masato; Hirata, Shizuko

doi:10.1016/j.sab.2003.12.019

Cited by 67 publications

(57 citation statements)

References 30 publications

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“…Compared to other online SPE coupled ICP-AES for the determination of REEs in the reported literatures, the sample throughput was much improved, while earlier values were only 10 and 9 h -1 . 6,29 The regeneration is one of the key factors in evaluating the performance of the adsorption material.…”

Section: Analytical Performancementioning

confidence: 99%

ICP-AES Determination of Trace Rare Earth Elements in Environmental and Food Samples by On-line Separation and Preconcentration with Acetylacetone-modified Silica Gel Using Microcolumn

Zhang

Huang

2007

ANAL. SCI.

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A novel method of online microcolumn separation and preconcentration coupled to inductively coupled plasma atomic emission spectrometry (ICP-AES) with the use of acetylacetone-modified silica gel as packing material was developed for the determination of trace rare earth elements (REEs) in environmental and food samples. The main parameters affecting online separation/preconcentration, including pH, sample flow rate, sample volume, elution and interfering ions, have been investigated in detail. Under the optimized operating conditions, the adsorption capacity values for Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu were 25.65, 23.23, 24.01, 19.40, 22.89, 23.77, 24.40, 23.96, 25.58, 25.15, 24.86, 22.75, 16.05, 24.13, 26.51 and 27.93 mg g -1 , respectively. Detection limits (3σ) based on three times standard deviations of the blanks by 8 replicates were in the range from 48 pg mL -1 for Lu to 1003 pg mL -1 for Sm. With 90 s preconcentration time and 10 s elution time, the enrichment factor was 10 and the sample frequency was 28 h -1 . The precisions (RSDs) obtained by determination of a 250 ng mL -1 (n = 8) REEs standard solution were in the range from 1.7% for Y to 4.4% for Sm. The proposed method was successfully applied to the determination of trace REEs in pig liver, agaric and mushroom. To validate the proposed method, we analyzed three certified reference materials (GBW07401 soil, GBW07301a sediment, and GBW07605 tea leaves). The determined values were in a good agreement with the certified values. The method is rapid, selective, sensitive and applicable to the determination of trace REEs in biological and environmental samples with complicated matrix effects.

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Section: Analytical Performancementioning

confidence: 99%

ICP-AES Determination of Trace Rare Earth Elements in Environmental and Food Samples by On-line Separation and Preconcentration with Acetylacetone-modified Silica Gel Using Microcolumn

Zhang

Huang

2007

ANAL. SCI.

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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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“…The complex was surveyed for acidity effect on the absorbance which are shown in Figure 3. The results indicate that Cr(PDMPI) 3 has maximum absorption in alkaline pH 8.0. At pH <8.0 the intensity of the desired complex decreases most probably due to partial hydrolysis of chromium ion.…”

Section: Ph Effect On Sensitivitymentioning

confidence: 90%

“…Then, the absorption spectrum of Cr(PDMPI) 3 in the presence and absence of Triton X-100 was obtained, which is shown in Figure 2. Examinations in micellar media has higher sensitivity need to extraction of complex to organic phase.…”

Section: Absorption Spectra Of Cr(pdmpi) 3 In Triton X-100 Mediamentioning

confidence: 99%

“…Chromium is stable in Cr(III) and Cr(VI) oxidation states in aqueous solutions 2 . The spectrophotometric and extraction method have been described for chromium determination according to coordination with different ligands [3][4][5][6] . Several methods require complicated and expensive instrument and are time consuming, low reproducibility of results is another restriction.…”

Section: Introductionmentioning

confidence: 99%

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Selective and Sensitized Spectrophotometric Determination of Cr(III) Ion using 2-(Phenyl)-4,5-di(4-methoxyphenyl)imidazole, Ligand for Speciation of Chromium Ion in Triton X-100 as Surfactant

2018

Chem Sci Trans

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Highly interference-free sensitized and sensitive spectrophotometric method for the determination of Cr(III) ion is described. The method is based on the reaction between Cr(III) ion and benzyl dioxime in micellar in the presence of non-ionic surfactant Triton X-100 has been performed. The absorbance is linear from 0.1 up to 25.0 µgml −1 in aqueous solution. The repeatability (RSD) is 1.3% at a concentration of 1 µg mL −1 with molar absorption coefficient of 68,600 Lmol −1 cm −1 and detection limit of 0.12 ngmL −1 . The influence of reaction variables including pH, amount of 2-(phenyl)-4,5-di(4-methoxyphenyl)imidazole (PDMPI), type and amount of surfactant, complexation time and the effect of interfering ions, were investigated. The proposed methods have been applied to the rapid and simple determination of Cr(III) ion in the real samples successfully with recovery yield of almost 100%. The method does not need any separation or organic solvent extraction.

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Determination of rare earth elements in seawater by inductively coupled plasma mass spectrometry with on-line column pre-concentration using 8-quinolinole-immobilized fluorinated metal alkoxide glass

Cited by 67 publications

References 30 publications

ICP-AES Determination of Trace Rare Earth Elements in Environmental and Food Samples by On-line Separation and Preconcentration with Acetylacetone-modified Silica Gel Using Microcolumn

ICP-AES Determination of Trace Rare Earth Elements in Environmental and Food Samples by On-line Separation and Preconcentration with Acetylacetone-modified Silica Gel Using Microcolumn

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

Selective and Sensitized Spectrophotometric Determination of Cr(III) Ion using 2-(Phenyl)-4,5-di(4-methoxyphenyl)imidazole, Ligand for Speciation of Chromium Ion in Triton X-100 as Surfactant

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