Identification of volatile iron species generated by UV photolysis

Grinberg, Patrícia; Sturgeon, Ralph E.; Gardner, Graeme J.

doi:10.1016/j.microc.2012.05.036

Cited by 19 publications

(19 citation statements)

References 19 publications

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“…Photochemical vapor generation (PVG) was rst reported by Sturgeon et al [28][29][30][31][32][33] and utilizes ultraviolet (UV) irradiation to convert analyte ions into volatile species in the presence of low molecular weight (LMW) organic compounds. PVG not only retains the principle advantages of conventional CVG but further offers several unique advantages of elimination of the need for fresh tetrahydroborate solution and minimization of H 2 production.…”

Section: Introductionmentioning

confidence: 99%

“…Most importantly, PVG expanded the CVG application range to determine several non-hydride-forming elements including Fe, Co, Ni and I. 2,29,30,32 Despite the increased interest in PVG over the past several years, the PVG efficiencies of some hydrideforming elements such as Sn, Pb and Cd are too low to be analytically useful for real sample analysis. [40][41][42] The aim of this work is to design a dual-mode chemical vapor generation (DM-CVG) system that integrates HG and PVG to accomplish simultaneous multi-element analysis of hydrideforming and non-hydride-forming elements by atomic uorescence spectrometry.…”

Section: Introductionmentioning

confidence: 99%

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Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Wang

Jiang

et al. 2014

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A dual-mode chemical vapor generation integrating hydride generation and photochemical vapor generation was developed for simultaneous multi-element analysis of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry. Four elements were selected as model elements of hydride-forming (As, Cd) and non-hydride-forming (Ni, Fe) elements to validate this proposed method. Standard or sample solutions were separately pumped to mix with tetrahydroborate, and concentrated formic acid and ammonia, and then directed to a hydride generator and a photochemical reactor to realize simultaneous hydride generation and photochemical vapor generation, respectively. Optimum conditions for dual-mode chemical vapor generation were carefully investigated. Under the optimized conditions, limits of detection of 0.05, 0.008, 0.8 and 0.1 μg L(-1) were obtained for As, Cd, Fe and Ni, respectively. The precisions were 5.0, 5.5, 4.3 and 4.5% (n = 6, RSDs) for 2 μg L(-1) of As, 1 μg L(-1) of Cd, 50 μg L(-1) of Fe and 10 μg L(-1) of Ni, respectively. This method was validated for accuracy with three certified reference water samples and applied to the simultaneous determination of these elements in a tap water sample with spike recoveries in the range of 95-99%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Wang

Jiang

et al. 2014

Analyst

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“…One such approach is treatment of samples with formic acid. [3][4][5][6] Formic acid has also been explored as a reagent to promote photochemical vapor generation (PVG), [7][8][9][10][11] thereby permitting more efficient introduction of gaseous analytes into spectrochemical sources to improve detection limits.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of the Use of Formic Acid for Extraction of Trace Elements from Brazil Nut and Babassu Coconut and Its Suitability for Multi-Element Determination by ICP-MS

Lopes¹,

Silva²,

Grinberg³

et al. 2016

Journal of the Brazilian Chemical Society

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Formic acid extractions of Brazil nut and babassu coconut samples were undertaken prior to determination of Al, As, Ba, Co, Cr, Cu, Mn, Mo, Ni, Pb, Se, Sr, V and Zn in their meat and oil portions by inductively coupled plasma mass spectrometry (ICP-MS) in an effort to accomplish a first order fractionation of the trace elements between these two components. An optimized full factorial design was applied to establish the best conditions for extraction. Microwave-assisted nitric acid digestions of samples and fractions along with analysis of certified reference material TORT-2 established the efficiency of recovery of the trace elements as well as provided a verification of accuracy. The multiple responses were analyzed using a desirability function wherein the recovery of the trace elements by extraction was compared with the determination of the total content as determined by nitric acid digestion. Although most trace elements presented a recovery higher than 85% using a formic acid extraction, Al suffered consistently low results for all samples (40-50%). Except for Al and Cr, the majority of the trace elements were present in the defatted fraction of both samples, i.e., Al (50 and 10%), Cr (86 and 60%), Ni (30 and 10%) and Sr (8 and 20%) in Brazil nut and babassu coconut oil fractions, respectively.

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“…The PCVG technique has been applied for the quantitative analysis of a wide range of elements, [15][16][17][18][19][20][21] such as Se, Hg, As, Ni, Fe, Co, Sb, Bi, Te, I and Cd. Furthermore, some of their photochemical products [22][23][24][25][26] generated from PCVG have been validated, and the mechanisms 27 have been proposed. This PCVG technique can also be used for sampling interface in the speciation analysis [28][29][30] of Se, Hg and As.…”

Section: Introductionmentioning

confidence: 99%

Online photochemical vapour generation of inorganic tin for inductively coupled plasma mass spectrometric detection

Duan

Gong

Shen

2015

J. Anal. At. Spectrom.

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Identification of volatile iron species generated by UV photolysis

Cited by 19 publications

References 19 publications

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

An Evaluation of the Use of Formic Acid for Extraction of Trace Elements from Brazil Nut and Babassu Coconut and Its Suitability for Multi-Element Determination by ICP-MS

Online photochemical vapour generation of inorganic tin for inductively coupled plasma mass spectrometric detection

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