Generation of tellurium hydride and its atomization in a dielectric barrier discharge for atomic absorption spectrometry

Bufková, Kateřina; Musil, Stanislav; Kratzer, Jan; Dvořák, Pavel; Mrkvičková, Martina; Voráč, Jan; Dědina, Jiřı́

doi:10.1016/j.sab.2020.105947

Cited by 19 publications

(13 citation statements)

References 54 publications

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“…This enhancement factor was calculated as the ratio of the peak area sensitivity obtained with FI-PVG sample introduction to that arising from FI-PN during their concurrent operation; hence, both were measured under exactly the same plasma conditions. The nebulization efficiency was determined under optimal settings of the ICPMS (Table S1) using a modified waste collection method. ,,,, The overall PVG efficiency was also periodically estimated from the comparison of peak area sensitivities arising from FI introduction of a single Ru 3+ standard for PN and PVG, providing an immediate indication of the state of optimization of the PVG methodology; these values are given in the text without a corresponding SD.…”

Section: Methodsmentioning

confidence: 99%

“…The overall PVG efficiency was determined according to our previously published procedure 20,38,39,46,47 and is the product of a sensitivity enhancement factor and absolute nebulization efficiency. This enhancement factor was calculated as the ratio of the peak area sensitivity obtained with FI-PVG sample introduction to that arising from FI-PN during their concurrent operation; hence, both were measured under exactly the same plasma conditions.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The nebulization efficiency was determined under optimal settings of the ICPMS (Table S1) using a modified waste collection method. 20,38,39,46,47 The overall PVG efficiency was also periodically estimated from the comparison of peak area sensitivities arising from FI introduction of a single Ru 3+ standard for PN and PVG, providing an immediate indication of the state of optimization of the PVG methodology; these values are given in the text without a corresponding SD.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The enhancement factor reached 3.54 ± 0.01. Considering a nebulization efficiency of 8.20 ± 0.02% determined using a modified waste collection method following a recently published procedure, 20,38,39,46,47 the overall PVG efficiency reached 29.0 ± 0.1%.…”

Section: Figures Of Meritmentioning

confidence: 99%

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Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

2021

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An extremely sensitive methodology for the determination of Ru was developed by coupling photochemical vapor generation (PVG) analyte introduction with inductively coupled plasma mass spectrometry (ICPMS). PVG was undertaken with a thin-film flow-through photoreactor in a medium comprising 8 M formic acid in the presence of 10 mg L −1 Co 2+ and 25 mg L −1 Cd 2+ . The volatile product (presumably ruthenium pentacarbonyl) was generated in a flow injection mode, yielding an overall efficiency of 29% at a sample flow rate of 1.4 mL min −1 . The presence of both Co 2+ and Cd 2+ sensitizers enhanced PVG efficiency by 3,200-fold, permitting a 31 s irradiation time. Although enhanced efficiency (≈40%) could be obtained with increased Co 2+ concentration, this was not suitable for routine use due to co-generation of cobalt carbonyl. Excellent repeatability (<2.5%) and reproducibility (4%) were achieved for 200 ng L −1 Ru 3+ . Limits of detection ranged from 20 to 42 pg L −1 (10−21 fg absolute) depending on the measured isotope and operational mode of the ICPMS reaction/collision cell. Interferences from inorganic acids and their anions, several transition metals, and metalloids were investigated. Practical application of the methodology was demonstrated by the analysis of seven water samples of various matrix complexities (well water, spring water, contaminated water, and seawater).

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Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: Figures Of Meritmentioning

confidence: 99%

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Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

2021

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“…A 0.2% HNO 3 , 6 mol L −1 HCl, and 2% NaBH 4 were used as initial conditions for the HG reaction based on a previous study. 16 The flows of these solutions were optimized as a compromise between peak area response and peak width using the 20 ng L −1 Te IV standard. The optimal flow rates were chosen as 1, 4, 3, and 1.2 mL min −1 and for air, HNO 3 carrier, HCl, and NaBH 4 , respectively.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Non-chromatographic Speciation Analysis of Tellurium by HG-ICP–MS/MS at Sub ng L^–1 Concentration in Natural Waters Using Ti^III as a Pre-Reducing Agent

2022

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An automated and high-throughput (36 h–1) method for extremely sensitive determination of the two main tellurium species in the environment, namely, tellurite (TeIV) and tellurate (TeVI), was developed. Flow injection hydride generation was interfaced for the first time with inductively coupled plasma triple quadrupole mass spectrometry (ICP–MS/MS) detection to assure interference-free tellurium analysis. ICP–MS/MS conditions were studied in detail. Using a mixture of He + O2 gases in the reaction cell, the background signals significantly dropped and Xe isobaric interference was eliminated, allowing measurement with the most abundant Te isotopes, that is, 128Te and 130Te, and offering a huge increase in sensitivity. Volatile H2Te was selectively generated by a HCl/NaBH4 reaction from TeIV or from both TeIV and TeVI (TeIV+VI) after pre-reduction of TeVI by a TiCl3 solution. The optimum conditions for TiCl3 as a pre-reductant and the pre-reduction kinetics were also investigated. Different reduction rates were found depending on the sample stabilization media (HCl, HNO3, or EDTA). The same sensitivity was found for TeIV and TeVI, measured after pre-reduction, and no significant matrix effect was observed in both fresh and seawaters. Therefore, external calibration was used for quantification in real samples. Under optimal conditions, this method reached an unprecedented limit of detection of 0.07 ng L–1 for both TeIV and TeIV+VI and an intra-day repeatability of 5.2% at the 5 ng L–1 level. The methodology was successfully applied to the speciation analyses in commercially available certified reference materials of river water and seawater, and in bottled water and lake water samples.

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UV-photochemical vapor generation of tellurium in a thin-film photoreactor with fast stripping of volatile compounds

et al. 2022

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Generation of tellurium hydride and its atomization in a dielectric barrier discharge for atomic absorption spectrometry

Cited by 19 publications

References 54 publications

Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

Non-chromatographic Speciation Analysis of Tellurium by HG-ICP–MS/MS at Sub ng L^–1 Concentration in Natural Waters Using Ti^III as a Pre-Reducing Agent

UV-photochemical vapor generation of tellurium in a thin-film photoreactor with fast stripping of volatile compounds

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Generation of tellurium hydride and its atomization in a dielectric barrier discharge for atomic absorption spectrometry

Cited by 19 publications

References 54 publications

Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

Ultrasensitive Detection of Ruthenium by Coupling Cobalt and Cadmium Ion-Assisted Photochemical Vapor Generation to Inductively Coupled Plasma Mass Spectrometry

Non-chromatographic Speciation Analysis of Tellurium by HG-ICP–MS/MS at Sub ng L–1 Concentration in Natural Waters Using TiIII as a Pre-Reducing Agent

UV-photochemical vapor generation of tellurium in a thin-film photoreactor with fast stripping of volatile compounds

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Product

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Non-chromatographic Speciation Analysis of Tellurium by HG-ICP–MS/MS at Sub ng L^–1 Concentration in Natural Waters Using Ti^III as a Pre-Reducing Agent