Continuous flow hydride generation-atomic fluorescence spectrometric determination and speciation of arsenic in wine

Karadjova, Irina; Lampugnani, Leonardo; Onor, Massimo; D’Ulivo, Alessandro; Tsalev, Dimiter L.

doi:10.1016/j.sab.2005.05.008

Cited by 66 publications

(65 citation statements)

References 21 publications

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“…It appears that, chemical conditions of hydride generation, e.g. NaBH 4 and HCl concentrations, need to be reoptimized for samples with tin concentrations higher than 50.0 mg/L. Based on 3σ criterion, the detection limit (LOD) was determined as 0.3 mg/L.…”

Section: Calibration Graph For Snmentioning

confidence: 99%

“…These elements can also be determined in the form of their volatile hydrides by using a type of sample introduction technique called hydride generation (HG) [1,2]. There is a great interest in the field of analytical chemistry in exploring the analytical capabilities of HG with respect to speciation analysis [3][4][5] and multi-element determinations [6,7] since its first use in 1968 by Holak [8].…”

Section: Introductionmentioning

confidence: 99%

“…Hydride generation is a chemical derivatization technique in which some elements of the periodic table mentioned above form their volatile hydrides as indicated in the following reactions [1] when they react with strong reducing agents, such as sodium borohydride, NaBH 4 and hydrochloric acid, HCl.…”

Section: Introductionmentioning

confidence: 99%

“…This paper focuses on the systematic investigation of the chemical and instrumental parameters of the HG-LIBS system for quantitative analysis of environmentally important elements that can form volatile hydrides. Results specifically obtained for tin hydrides, stannanes, SnH 4 , are presented in detail.…”

Section: Introductionmentioning

confidence: 99%

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Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Ünal

Yalçın

2010

Spectrochimica Acta Part B: Atomic Spectroscopy

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The design, construction and optimization studies of a continuous flow hydride generation laser-induced breakdown spectroscopic system, HG-LIBS, for the determination of tin in aqueous environments is presented. Optimization of the Laser Induced Breakdown Spectroscopy (LIBS) signal with respect to carrier gas flow rate, analyte, acid (HCl) and reductant (NaBH 4 ) concentrations and flow rates was performed by using spectral emission intensity from the neutral Sn(I) line at 284.0 nm under atmospheric pressures. With flow rates of 5.0 mL/min for NaBH 4 and 2.5 mL/min for HCl, optimum NaBH 4 and HCl concentrations were determined as 2.0% (w/v) and 1.0% (v/v), respectively. The hydride generation efficiency of the system was tested for tin hydride, stannane (SnH 4 ), by inductively coupled plasma mass spectrometer (ICP-MS). It was found that higher than 99% of the analyte was released into the gaseous phase. Upon optimization, the minimum detectable Sn concentration was found as 0.3 mg/L in water samples. That corresponds to more than two orders of increase in sensitivity compared to methods that employ common sample introduction techniques in liquids analysis by LIBS. Over 90% recoveries were obtained from spiking experiments with river, tap and drinking water samples. Results illustrate potential use of the continuous flow HG-LIBS system for monitoring of Sn concentrations in aqueous environments.

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Section: Calibration Graph For Snmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Ünal

Yalçın

2010

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…MMA is calculated by difference. 75 A similar approach is employed by other authors for speciation of the same four arsenic species in vegetables.…”

Section: Speciation Of As Without Chromatographic Separationmentioning

confidence: 99%

Atomic Fluorescence Spectrometry: a suitable detection technique in speciation studies for arsenic, selenium, antimony and mercury

Sánchez-Rodas

Corns

Chen

et al. 2010

J. Anal. At. Spectrom.

240

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Atomic Fluorescence Spectrometry (AFS) is an ideal detection technique for speciation studies concerning hydride forming elements (mainly As, Se and Sb) and Hg. The analytical features of AFS, such as detection limits below the mg L À1 and the wide linear calibration range, up to the mg L À1, allow its application to a great variety of environmental, biological and food samples. AFS represents a suitable alternative to other atomic spectrometers commonly employed in speciation studies such as Atomic Absorption Spectrometry (AAS) and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). The instrumentation used for AFS and the design of the vapour generation and optical layouts required to sustain the full benefits of the AFS approach are also described. The present review explains and comments on the instrumental couplings of chromatographic (HPLC and GC) and nonchromatographic separations (CE) with AFS detection, with online hydride generation for the speciation of inorganic and organic compounds of As, Se and Sb, and cold vapour for Hg. Other optional intermediate steps are online photo-oxidation (UV), pyrolysis or Microwave Assisted Digestion (MAD) for non-directly reducible compounds. Many different sample types (e.g. water, soils, air, biota, food) have been analysed using these instrumental couplings with AFS detection. These are summarised and discussed.

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Atomic Absorption Spectrometry (flame, electrothermal, vapour generation) in Environmental, Biological and Food Analysis

Tsalev

2010

Environmental Heavy Metal Pollution and Effects on Child Mental Development

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Continuous flow hydride generation-atomic fluorescence spectrometric determination and speciation of arsenic in wine

Cited by 66 publications

References 21 publications

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Atomic Fluorescence Spectrometry: a suitable detection technique in speciation studies for arsenic, selenium, antimony and mercury

Atomic Absorption Spectrometry (flame, electrothermal, vapour generation) in Environmental, Biological and Food Analysis

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