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  1. No Access

    Article

    Spectrophotometric determination of nickel(II), palladium(II) and copper(II) in presence of each other and other ions with 1-(o-carboxyphenyl)-3-hydroxy-3-phenyltriazene

    Ni, Pd und Cu bilden mit dem Reagens bei pH 6,8–8,3, 2,4–3,5 bzw. 2,2–3,8 grünlich-gelbe, gelblich-orange bzw. hellgrüne Komplexe mit Absorptionsmaxima bei 410, 410 bzw. 400 nm. Das Beersche Gesetz wird in den...

    A. K. Majumdar, D. Chakraborti in Fresenius' Zeitschrift für analytische Chemie (1971)

  2. No Access

    Article

    Potentiometric determination of sulphate in fertilisers with cadmium sulphide membrane electrode

    Die vorgeschlagene Methode beruht auf Reduktion und Entwicklung von H2S, gefolgt von einer potentiometrischen Titration mit Bleinitrat. Zum Aufschluß der Probe wurden verschiedene Verfahren getestet, wobei die Au...

    D. Chakraborti, F. Adams in Fresenius' Zeitschrift für analytische Chemie (1979)

  3. No Access

    Article

    Atomic-absorption spectrophotometric determination of volatile organolead compounds in the atmosphere

    Die Bestimmung der Gesamtkonzentration an Tetraalkylbleiverbindungen in der Luft beruht auf der Kondensation in einer Kühlfalle bei −130° C, Desorption bei 60° C in ein Salpetersäure-Wasserstoffperoxid-Gemisch...

    S. G. Jiang, D. Chakraborti, W. De Jonghe… in Fresenius' Zeitschrift für analytische Che… (1981)

  4. No Access

    Article

    Ion-chromatographic determination of fluorine in texas lignite

    Braunkohlenproben von etwa 1 g wurden in der Sauerstoffbombe mineralisiert, der Rückstand in Wasser gelöst und die Lösung mit Hilfe der Ionen-Chromatographie und mit einer fluoridsensitiven Elektrode auf Fluor...

    D. Chakraborti, D. C. J. Hillmann… in Fresenius' Zeitschrift für analytische Che… (1984)

  5. No Access

    Article

    Ionic alkyllead compounds in environmental water and sediments

    To elucidate the occurrence and fate of ionic alkyllead species in environmental water and sediments, a procedure, based on the existing methodology for speciation of lead in the biosphere, has been optimized....

    D. Chakraborti, R. J. A. Van Cleuvenbergen, F. C. Adams in Hydrobiologia (1989)

  6. No Access

    Article

    Direct determination of lead in human blood and selenium, cadmium, copper, zinc in serum by electrothermal atomic absorption spectrophotometry using Zeeman effect background correction

    The procedure for the direct determination of lead in human blood and selenium, cadmium, copper and zinc from human blood serum with micro quantities of the samples are described using electrothermal atomic ab...

    Zhao **, Jiang Shougui, Chen Shikun… in Fresenius' Journal of Analytical Chemistry (1990)

  7. No Access

    Article

    Analysis of standard reference materials after microwave-oven digestion in open vessels using graphite furnace atomic absorption spectrophotometry and Zeeman-effect background correction

    Heating-covered teflon digestion vials located inside a reheatable container in the presence of different acid mixtures with microwave oven dissolve the metals from biological and environmental certified refer...

    D. Chakraborti, M. Burguera, J. L. Burguera in Fresenius' Journal of Analytical Chemistry (1993)

  8. No Access

    Article

    On line speciation of Se(VI), Se(IV), and trimethylselenium by HPLC-microwave oven-hydride generation-atomic absorption spectrometry

    An on-line system is proposed consisting of an anion-exchange chromatographic column, microwave-induced thermooxidation of trimethylselenium in the presence of persulphate, and microwave-induced thermoreductio...

    M. G. Cobo-Fernández, M. A. Palacios… in Fresenius' Journal of Analytical Chemistry (1995)

  9. No Access

    Article

    Flow injection atomic absorption spectrometery for the standardization of arsenic, lead and mercury in environmental and biological standard reference materials

    Results of a thorough study and application of flow injection atomic absorption spectrometry for the determination of As, Pb and Hg in parts per million to sub-parts per billion levels in environmental and bi...

    Gautam Samanta, D. Chakraborti in Fresenius' Journal of Analytical Chemistry (1997)

  10. No Access

    Article

    Variability among isolates of Fusarium udum and the effect on progression of wilt in pigeonpea

    Vascular wilt (caused by Fusarium udum) is the most important disease of pigeonpea. Breeding strategies are needed to develop durable resistance against this pathogen. Knowledge of the genetic and pathogenic vari...

    A. Purohit, S. Ganguly, G. Ghosh, R. Kundu Chaudhuri… in European Journal of Plant Pathology (2017)

  11. Article

    Open Access

    Tuneable electron–magnon coupling of ferromagnetic surface states in PdCoO2

    Controlling spin wave excitations in magnetic materials underpins the burgeoning field of magnonics. Yet, little is known about how magnons interact with the conduction electrons of itinerant magnets, or how t...

    F. Mazzola, C. -M. Yim, V. Sunko, S. Khim, P. Kushwaha… in npj Quantum Materials (2022)

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