Photochemical vapor generation: a radical approach to analyte introduction for atomic spectrometry

Sturgeon, Ralph E.

doi:10.1039/c7ja00285h

Cited by 116 publications

(118 citation statements)

References 175 publications

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“…Standard additions calibration was employed for quantitation under optimized experimental conditions to achieve final accurate results. As a result of PVG sample introduction, potential spectral interferences arising from sample matrices (e.g., 34 S 1 H + , 19 F 16 O + , and 19 F 18 O + ) are minimized. The high blank encountered arises mainly from DIW and not from spectral interferences, because similar values of blank were obtained at low and high resolution, respectively.…”

Section: Influence Of Transition Metals and Hno 3 On The Pvg Of CL Tmentioning

confidence: 99%

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Sturgeon

Nadeau

et al. 2018

Anal. Chem.

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A novel, reliable, and sensitive approach for the determination of chlorine by sector field inductively coupled plasma mass spectrometry (SF-ICPMS) using photochemical vapor generation for sample introduction is presented. Methyl chloride is generated from different chlorine species in a flow-through photochemical reactor using a 1% solution of acetic acid containing 7.5 μg g of Cu. The volatile product is directed by an argon carrier gas to a gas-liquid separator and introduced into the instrument. A sample flow rate at 1.7 mL min and a 45 s irradiation time provided a 74-fold enhancement in sensitivity compared to conventional nebulization. A blank-limited detection limit of 0.5 ng g for chloride, suitable for quantitation at trace levels, was achieved. The proposed method was validated by analysis of two certified reference materials, NIST SRM 1568b rice flour and SRM 1571 orchard leaves, with satisfactory results, as well as three varieties of bottled water, achieving spike recoveries between 101% and 105%.

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Section: Influence Of Transition Metals and Hno 3 On The Pvg Of CL Tmentioning

confidence: 99%

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Sturgeon

Nadeau

et al. 2018

Anal. Chem.

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“…Thus, the potential risks of humans exposing to tellurium are increasing. Due to unique feature of Te to form volatile species, photochemical vapor generation (PVG) is emerging as a promising analytical tool for its determination. − PVG utilizes free radicals as reductants, which is generated by photodecomposition of low molecular weight organic compounds (LMWOCs). , PVG can efficiently separate analyte from troublesome sample matrix and provide a very simple and green procedure for chemical vapor generation. − However, the low PVG generation efficiency of Te often limits its wide application in environmental samples with trace Te levels. , …”

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confidence: 99%

Photochemical Vapor Generation of Tellurium: Synergistic Effect from Ferric Ion and Nano-TiO₂

Peng

et al. 2018

Anal. Chem.

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Photochemical vapor generation (PVG) is emerging as a promising analytical tool for Te determination, thanks to its efficient matrix separation, and simple and green procedure. However, the low PVG generation efficiency of Te is the bottleneck for its wide application in environmental samples containing trace Te. Herein, we reported a high efficient PVG for Te determination by synergistic effect of ferric ion and nano-TiO. The analytical sensitivity was enhanced approximately 15-fold for Te(IV) in the presence of both ferric ions and nano-TiO, comparing to conventional PVG. Besides, the use of nano-TiO can provide Te(VI) and Te(IV) an equal and high PVG efficiency in the presence of ferric ions, owned to the high photocatalytic performance of TiO under short-wavelength UV irradiation (254 and 185 nm). Under the optimized experimental conditions, a detection limit of 1.0 ng L was obtained. The precision of replicate measurements was 2.3% (RSD, n = 7) at 0.5 μg L for Te(IV). The methodology was validated by successful determination of Te in surface waters and two standard reference sediment samples. To our best knowledge, this is the first report of the synergistic enhancement of transitional metal ions and nano-TiO in PVG, which possesses potential for highly sensitive determination of vapor-forming elements.

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“…To date, essentially only one mechanistic model has been proffered to account for PVG. 1,7,8 Reducing radical species (H˙, R˙, and CO 2 ˙ − ) as well as aquated electrons (e (aq) − ) are generated through the action of UV photons that subsequently interact with the analyte to form volatile species, including hydrides, carbonyls, alkylated compounds, oxides, or atomic vapor, depending on the analyte and photochemical agents used.…”

Section: Introductionmentioning

confidence: 99%

GC-MS exploration of photochemically generated species of Os, W and Ru from reductive and oxidative media

Vyhnanovský

Musil

Oliveira³

et al. 2022

J. Anal. At. Spectrom.

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Photochemical vapor generation: a radical approach to analyte introduction for atomic spectrometry

Abstract: A tutorial review of photochemical vapor generation for enhanced sample introduction with analytical atomic spectrometry is presented, covering experimental hardware, reaction mechanisms, products, interferences and future outlook.

Cited by 116 publications

References 175 publications

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Photochemical Vapor Generation of Tellurium: Synergistic Effect from Ferric Ion and Nano-TiO₂

GC-MS exploration of photochemically generated species of Os, W and Ru from reductive and oxidative media

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Photochemical vapor generation: a radical approach to analyte introduction for atomic spectrometry

Abstract: A tutorial review of photochemical vapor generation for enhanced sample introduction with analytical atomic spectrometry is presented, covering experimental hardware, reaction mechanisms, products, interferences and future outlook.

Cited by 116 publications

References 175 publications

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Copper Ion Assisted Photochemical Vapor Generation of Chlorine for Its Sensitive Determination by Sector Field Inductively Coupled Plasma Mass Spectrometry

Photochemical Vapor Generation of Tellurium: Synergistic Effect from Ferric Ion and Nano-TiO2

GC-MS exploration of photochemically generated species of Os, W and Ru from reductive and oxidative media

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Photochemical Vapor Generation of Tellurium: Synergistic Effect from Ferric Ion and Nano-TiO₂