Determination of 5,6-dihydro-2-methyl-1,4-oxathiin-3-carboxanilide (Vitavax) and two of its photoproducts by high speed liquid chromatography

Wolkoff, Aaron W.; Onuska, Francis I.; Comba, Michael E.; Larose, Richard H.

doi:10.1021/ac60354a050

Cited by 17 publications

(3 citation statements)

References 14 publications

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“…LOD and LOQ obtained at GCE were 2.0 × 10 −6 mol L −1 and 6.7 × 10 −6 mol L −1 , respectively, whereas the LOD and LOQ at GCE/MWCNTs (0.5) were 1.1 × 10 −6 and 3.8 × 10 −6 mol L −1 , respectively. The obtained LOD values in this paper are close to the LOD values of oxycarboxin determination of the other analytical techniques described in the literature, i.e., 1.12 × 10 −7 mol L −1 for spectrophotometry [7], 1.12 × 10 −5 mol L −1 for thin-layer chromatography [8], 1.87 × 10 −6 mol L −1 for gas chromatography [9], and 3.74 × 10 −6 mol L −1 for high-speed liquid chromatography [10]. Additionally, the precision (the coefficient of variation) and the accuracy for five repetitions at each concentration of oxycarboxin from the calibration curves for both investigated electrodes were determined.…”

Section: Optimization Of Swadsv Parametersmentioning

confidence: 99%

“…Due to the harmful effects of oxycarboxin on living organisms, it is very important to develop simple and sensitive methods to identify and determine the concentration of Oxy in real samples. There are only a few publications devoted to the determination of oxycarboxin, and to the best of our knowledge, spectrophotometric method [7] and chromatographic techniques, such as thin-layer chromatography [8], gas chromatography [9], and high-speed liquid chromatography [10], were reported. Determination of oxycarboxin in spiked water samples was made by high-speed liquid chromatography in the concentration range of 3.7 × 10 −6 mol L −1 to 3.0 × 10 −4 mol L −1 [10].…”

Section: Introductionmentioning

confidence: 99%

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An application of a glassy carbon electrode and a glassy carbon electrode modified with multi-walled carbon nanotubes in electroanalytical determination of oxycarboxin

Leniart

Brycht

Burnat

et al. 2018

Ionics

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An electrochemical procedure for the quantitative determination of oxycarboxin at a glassy carbon electrode (GCE) and a glassy carbon electrode modified with multi-walled carbon nanotubes (GCE/MWCNTs) based on square wave adsorptive stripping voltammetry (SWAdSV) is presented for the first time. The effect of an amplitude (E SW ), a frequency ( f ), a step potential (ΔE s ), an accumulation potential (E acc ) and time (t acc ), and equilibration time (t eq ) was investigated. The best analytical signal was obtained in the medium of sulfuric acid on both electrodes. Under optimal analytical conditions, the linear ranges of Oxy concentrations 8.0 × 10 −6 -5.0 × 10 −5 mol L −1 with limit of detection of 2.0 × 10 −6 mol L −1 for bare GCE and 6.0 × 10 −6 -9.0 × 10 −5 mol L −1 with limit of detection of 1.1 × 10 −6 mol L −1 for GCE/MWCNTs were obtained. To investigate the utility of the proposed method for the determination of oxycarboxin in real samples, a quantitative determination of Oxy was performed in spiked river water samples. The electrode processes of oxycarboxin oxidation were studied by cyclic voltammetry (CV) at both electrodes. The surface characterization of bare GCE and GCE/MWCNTs was evaluated with an atomic force microscopy (AFM) and a scanning electron microscopy (SEM).

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Section: Optimization Of Swadsv Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An application of a glassy carbon electrode and a glassy carbon electrode modified with multi-walled carbon nanotubes in electroanalytical determination of oxycarboxin

Leniart

Brycht

Burnat

et al. 2018

Ionics

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“…[21] arenecarboxylic acids [49][50][51], carbohydrates 152, 531, phenols [54], 5.6-dihydro-2-methyl-l,4-oxathiin-3-carboxanilide [55] hydroxycarboxylic acids [56, 571 hydroxycarboxylic acids [56, 571 hydroperoxides [S] sugar [58] reducing sugars [59] carboxylic acids 160-621 hydroxycarboxylic acids [56, 571, uronic acids [63] carbohydrates [64] nitrosamide [65] proline, hydroxyproline [66] cyclohexanone [ …”

Section: Outlook: Development Trendsmentioning

confidence: 99%

Liquid Column Chromatography with Chemical Derivatizations after Separation. [New analytical methods (15)]

Schwedt¹

1979

Angew. Chem. Int. Ed. Engl.

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Modern liquid column chromatography (high-pressure liquid chromatography, HPLC) has evolved in the last few years into a highly efficient and versatile separation technique. The selectivity of an analytical process that depends upon a previous separation step can in many cases be increased considerably by chemical derivatizations after the separation. In addition, lower detection limits can be achieved in this way than in detection without derivatization. The physicochemical principles of these combined processes involving chromatographic separation and chemical derivatization prior to detection (coupling of HPLC and a reaction detector) are presented and discussed. The state of development is outlined, with a survey of the more important applications so far described in the literature.

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Flüssigkeits‐Chromatographie in Säulen mit chemischen Umsetzungen nach der Trennung

Schwedt

1979

Angewandte Chemie

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Die moderne Flüssigkeits‐Chromatographie in Säulen (Hochdruck‐Flüssigkeits‐Chromatographie, HPLC) hat sich in den letzten Jahren zu einer sehr leistungsfähigen, vielseitig anwendbaren Trenntechnik entwickelt. Die Selektivität eines Analysenverfahrens, das auf einem Trennvorgang beruht, kann in vielen Fällen durch chemische Umsetzungen nach der Trennung wesentlich gesteigert werden. Außerdem lassen sich auf diese Weise niedrigere Nachweisgrenzen als bei der Detektion ohne Derivatisierung erreichen. Die physikalisch‐chemischen Grundlagen dieser Verbundverfahren aus chromatographischer Trennung und chemischer Umsetzung mit anschließender Detektion im Durchfluß (Kopplung von Hochdruck‐Flüssigkeits‐Chromatograph und Reaktionsdetektor) sowie der Stand der Entwicklung mit einem Überblick bisher beschriebener Anwendungen werden dargelegt und diskutiert.

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Determination of 5,6-dihydro-2-methyl-1,4-oxathiin-3-carboxanilide (Vitavax) and two of its photoproducts by high speed liquid chromatography

Cited by 17 publications

References 14 publications

An application of a glassy carbon electrode and a glassy carbon electrode modified with multi-walled carbon nanotubes in electroanalytical determination of oxycarboxin

An application of a glassy carbon electrode and a glassy carbon electrode modified with multi-walled carbon nanotubes in electroanalytical determination of oxycarboxin

Liquid Column Chromatography with Chemical Derivatizations after Separation. [New analytical methods (15)]

Flüssigkeits‐Chromatographie in Säulen mit chemischen Umsetzungen nach der Trennung

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