Evaluation of atomic fluorescence and atomic absorption spectrometric techniques for the determination of arsenic in wine and beer by direct hydride generation sample introduction

Segura, Marta; Madrid, Yolanda; Cámara, Carmen

doi:10.1039/a805391j

Cited by 34 publications

(39 citation statements)

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“…Since a boosted discharge hollow cathode lamp was used for excitation, atomic fluorescence spectrometry was suitable for routine analysis (Corns et al, 1993) and hydride generation-atomic fluorescence spectrometry (HG-AFS) was used for the determination of As (Segura et al, 1999;Featherstone et al, 1998;Feng and Fu, 1998) and Se (He et al, 1998;Feng and Fu, 1998;Rico Varade and Luque de Castro, 1998) due to its excellent sensitivity. It was found that HCl was the most suitable medium in which the fluorescence signals of the As and Se were more stable and more intense.…”

Section: Effect Of Hcl and Kbh Concentrationsmentioning

confidence: 99%

Distributions of arsenic and selenium in selected Chinese coal mines

Liang

Jiang

2002

Science of The Total Environment

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The contents of arsenic and selenium in 33 coals collected from the main coal mines in northeastern, northern and eastern China were determined by flow injection-hydride generation and non-dispersion atomic fluorescence spectrometry (HGAFS). The concentrations of As in the northeast region are relatively higher with the values )100 mg g ; in the east they are lower with values -100 mg g . The contents of Se in these three areas are the y1 y1opposite, most of them from the northeast mines are -1 mg g and increase as the mine location advances south y1 where the average contents are )5 mg g .

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Section: Effect Of Hcl and Kbh Concentrationsmentioning

confidence: 99%

Distributions of arsenic and selenium in selected Chinese coal mines

Liang

Jiang

2002

Science of The Total Environment

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“…Table 1 for an injected volume of 100 µL (HPLC-HG-atomic fluorescence spectrometry coupling In the present method, NaBH 4 is used not only as reductant but also as hydrogen supply, which is necessary to sustain the argon-hydrogen flame. Under the optimised conditions, the flame generated using the hydrogen liberated from the reagents was not robust enough [26]. An additional external hydrogen flow of 144 mL min -1 was added to the system to overcome this limitation and it was optimum within the range 100-200 mL min -1 in terms of sensitivity and signal to noise ratio.…”

Section: Resultsmentioning

confidence: 98%

Stability study of As(III), As(V), MMA and DMA by anion exchange chromatography and HG-AFS in wastewater samples

Segura

Muñoz²,

Madrid³

et al. 2002

Analytical and Bioanalytical Chemistry

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The stability of arsenic species (arsenate [As(V)], monomethylarsonate [MMA], dimethylarsinate [DMA] and arsenite [As(III)]) in two types of urban wastewater samples (raw and treated) was evaluated. Water samples containing a mixture of the different arsenic species were stored in the absence of light at three different temperatures: +4 degrees C, +20 degrees C and +40 degrees C. At regular time intervals, arsenic species were determined by high performance liquid chromatography (HPLC)-hydride generation (HG)-atomic fluorescence spectrometry (AFS). The experimental conditions for the separation of arsenic species by HPLC and their determination by AFS were directly optimised from wastewater samples. As(III), As(V), MMA and DMA were separated on an anion exchange column using phosphate buffer (pH 6.0) as the mobile phase. Under these conditions the four arsenic species were separated in less than 10 min. The detection limits were 0.6, 0.9, 0.9 and 1.8 micro g L(-1) for As(III), DMA, MMA and As(V), respectively. As(V), MMA and DMA were found stable in the two types of urban wastewater samples over the 4-month period at the three different temperatures tested, while the concentration of As(III) in raw wastewater sample decreased after 2 weeks of storage. A greater stability of As(III) was found in the treated urban wastewater sample. As(III) remained unaltered in this matrix at pH 7.27 over the period studied, while at lower pH (1.6) losses of As(III) were detected after 1 month of storage. The results show that the decrease in As(III) concentration with time was accompanied by an increase in As(V) concentration.

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“…Among the elements of interest determined by ETAAS are Pb [39,40,42,43,53,64], Cd [39,40,43,64], As [43,65] Sb [65], Al [13], Cu [43], Cr [39], V [15] and Hg [41]. HGAAS/HGAFS techniques are employed for elements such as Pb [50,51,53,66], As [52,66,67], Bi [66], Sn [66], Se [49] and Te [66]. These techniques offer better sensitivity in comparison with FAAS and faster analysis in comparison with ETAAS.…”

Section: Analyte Concentrationmentioning

confidence: 99%

“…<7%) include total reflection X-ray fluorescence (TXRF) spectrometry [46][47][48], and volatile compound generation-based techniques, i.e. hydride generation atomic absorption spectrometry (HGAAS) [49][50][51][52], hydride generation atomic fluorescence spectrometry (HGAFS) [52,53] and cold vapor atomic absorption spectrometry (CVAAS) [49].…”

Section: Atomic Spectrometry Techniques For Elemental Wine Analysis: mentioning

confidence: 99%

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

Grindlay

Mora

Gras

et al. 2011

Analytica Chimica Acta

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Evaluation of atomic fluorescence and atomic absorption spectrometric techniques for the determination of arsenic in wine and beer by direct hydride generation sample introduction

Cited by 34 publications

References 6 publications

Distributions of arsenic and selenium in selected Chinese coal mines

Distributions of arsenic and selenium in selected Chinese coal mines

Stability study of As(III), As(V), MMA and DMA by anion exchange chromatography and HG-AFS in wastewater samples

Atomic spectrometry methods for wine analysis: A critical evaluation and discussion of recent applications

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