Solid-Phase Extraction with Slurry Injection of the Resin Into ETAAS for Trace Determination of Thallium in Natural Water

Nukatsuka, Isoshi; Seitoh, Hiroyuki; Ohzeki, Kunio

doi:10.1007/s00604-004-0284-5

Cited by 27 publications

(17 citation statements)

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“…In a few studies, in order to eliminate the elution step and its risks, analyte elements were co-precipitated with a gathering precipitate or collected on a sorbent and determined after slurry sampling of the sorbent. [9][10][11][12][13][14][15][16] The slurry sampling analysis of the sorbent loaded with the analyte is fast, environmentally-friendly and the risks of error and low precision due to incomplete and irreproducible elution efficiency are eliminated. On the other hand, the most important critical parameter of this method is to suspend the solid phase (the sorbent) particles homogeneously and to maintain its stabilization during the entire analysis.…”

Section: Introductionmentioning

confidence: 99%

Determination of Lead in Water Samples by GFAAS after Collection on Montmorillonite with Slurry Introduction

2017

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In this study, a highly accurate, fast and practical separation/enrichment technique is described to determine the Pb in tap water samples by graphite furnace atomic absorption spectrometry. For this purpose, at first, Pb was collected on montmorillonite by batch technique, the supernatant was decanted and the solid phase was slurried in a mixture of 0.1% Triton X-114 and 0.1 mol L -1 HNO3 then directly introduced into graphite furnace without elution. Since the elution step was not applied, the method was simpler and faster compared to conventional techniques. The risks of elution step on the precision and recovery were eliminated. Up to 50-fold enrichment could be obtained by this method. The limit of detection (3δ, N = 10) and characteristic concentration of the method for Pb were 0.46 and 1.13 μg L -1 , respectively. In addition, the Pb in water samples (tap and river) collected from different regions of Turkey were determined.

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Section: Introductionmentioning

confidence: 99%

Determination of Lead in Water Samples by GFAAS after Collection on Montmorillonite with Slurry Introduction

2017

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“…A suspension of fine particles holding the analyte was also introduced directly into a graphite tube for determining the desired element; high enrichment factors were observed in the slurry injection techniques. [32][33][34][35][36] Although the coupling of flow-injection on-line column preconcentration/separation techniques to ETAAS is effective for the simplifying the operation, 21 the treatment of large volumes of aqueous samples is often time-consuming. These methods are unsuitable for processing many samples in a short time.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Trace Determination of Lead(II) in Water Using Electrothermal Atomic Absorption Spectrometry after Preconcentration by Solid-Phase Extraction to a Small Piece of Cellulose Acetate Type Membrane Filter

et al. 2011

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“…1,2 Thus, thallium poisoning is recognized as an industrial hazard and its monitoring in different matrices have drawn the attention of researchers. [3][4][5][6] The extremely low concentration of thallium in environmental sample (down to ng L -1 level) requires an analytical method featuring high sensitivity and a low detection limit. Thallium had been determined by inductively coupled plasma mass spectrometry (ICP-MS) [6][7][8] and laser-excited atomic fluorescence spectrometry (LEAFS).…”

Section: Introductionmentioning

confidence: 99%

“…10 This very sensitive and relatively simple method has been used by several workers for determination of thallium. 4,[11][12][13][14] However, direct determination of thallium with ETAAS involves many difficulties because of spectral and non spectral interference in environmental matrices. 15 The absorbance signal of thallium is seriously depressed by the presence of chloride in the graphite furnace.…”

Section: Introductionmentioning

confidence: 99%

“…Several separation/enrichment techniques, such as liquid-liquid extraction, 11,16 flotation, 17,18 separation on a chelex 100 resin column, 18 and solid phase extraction using cellulose nitrate resin (CNR) 12 or polyurethane foam 20 have been used for determination of thallium with ETAAS. However, these manual batch procedures are labor, time and reagent consuming, and require large volume of samples.…”

Section: Introductionmentioning

confidence: 99%

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Determination of thallium traces by ETAAS after on-line matrix separation and preconcentration in a flow injection system

Asadoulahi¹,

Dadfarnia²,

Shabani³

2007

J. Braz. Chem. Soc.

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Um sistema de injeção em fluxo sensível e simples foi desenvolvido para separação, pré-concentração e determinação de tálio. A pré-concentração é baseada na sorção do analito em uma microcoluna de dibenzo-18-coroa-6 (DB18C6) imobilizada em alumina revestida com surfactante e subseqüente eluição com solução de ácido nítrico (500 µL, 2 mol L -1 ). A concentração de tálio no eluente foi determinada por espectrometria de absorção atômica com atomização eletrotérmica. Os fatores que influenciaram a sorção e dessorção de íon tálio foram investigados. Para um volume da amostra de 5 mL, a calibração foi linear no intervalo de 0,1 a 20 µg L -1 (r = 0,9996) com um limite de detecção de 0,05 µg L -1 . A capacidade máxima de sorção foi de 1432 µg de tálio por grama do sorbente. A precisão do método para 1 µg L -1 foi 5,7% RSD (n = 11). O método foi aplicado para determinação de tálio em água, cabelo, unha e em materiais de referência certificados. A exatidão foi avaliada empregando experimentos de adição e recuperação ou por comparação dos resultados com materiais de referência certificados.A simple and sensitive flow injection system was developed for separation, preconcentration and determination of thallium. Preconcentration is based on the analyte sorption on a microcolumn of dibenzo-18-crown-6 (DB18C6) immobilized on surfactant coated alumina with subsequent elution using a nitric acid solution (500 µL, 2 mol L -1 ). The concentration of thallium in the eluent was determined using electrothermal atomic absorption spectrometry. Factors influencing the sorption and desorption of thallium ion were investigated. Using a sample volume of 5 mL, the calibration was linear from 0.1 to 20 µg L -1 range (r = 0.9996) with a detection limit of 0.05 µg L -1 . The maximum sorption capacity was 1432 µg of thallium per gram of sorbent. The precision of the method at 1 µg L -1 was 5.7% RSD (n = 11). The method was applied for determination of thallium in water, hair, nail, and standard reference samples. The accuracy was assessed using addition-recovery experiment or by comparison of the results with certified reference materials.

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Solid-Phase Extraction with Slurry Injection of the Resin Into ETAAS for Trace Determination of Thallium in Natural Water

Cited by 27 publications

References 0 publications

Determination of Lead in Water Samples by GFAAS after Collection on Montmorillonite with Slurry Introduction

Determination of Lead in Water Samples by GFAAS after Collection on Montmorillonite with Slurry Introduction

Ultra-Trace Determination of Lead(II) in Water Using Electrothermal Atomic Absorption Spectrometry after Preconcentration by Solid-Phase Extraction to a Small Piece of Cellulose Acetate Type Membrane Filter

Determination of thallium traces by ETAAS after on-line matrix separation and preconcentration in a flow injection system

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