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  • 1
    Electronic Resource
    Electronic Resource
    Motivic L-functions and Galois module structures (1996)
    Springer
    Mathematische Annalen 305 (1996), S. 65-102 
    Details
    ISSN: 1432-1807
    Keywords: 11R33 ; 11G40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01444212
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  • 2
    Electronic Resource
    Electronic Resource
    Spectrofluorimetric flow-injection determination of cerium in carbon and low alloy steels (1995)
    Springer
    Microchimica acta 119 (1995), S. 49-53 
    Details
    ISSN: 1436-5073
    Keywords: flow-injection ; spectrofluorimetry ; cerium(III) ; steel analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Cerium can be determined spectrofluorimetrically (λem 350 nm, λex 260 nm) based on the relatively intense native fluorescence of the cerium(III) aquo-ion. The main potential interference in the analysis of steel from iron(III), cerium(IV) and chromium(VI) are removed by use of a carrier solution containing 2.5% w/v hydroxylammonium chloride. The slight residual interference from iron(II) can be corrected by a matrix matching factor linearly related to the amount of iron present. The calibration graphs are linear over the range 0–7 μg ml−1 based on 250 μl injection volumes. The sampling rate was 30 h−1. The relative standard deviation was 2.0% (n=5) at 3 μg ml−1 cerium. The system has been applied to the determination of cerium in carbon or low alloy steels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01244853
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  • 3
    Electronic Resource
    Electronic Resource
    Studies in qualitative inorganic analysis. Part XXII (1965)
    Springer
    Microchimica acta 53 (1965), S. 322-324 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Arbeitsvorschriften für den qualitativen Nachweis von Fluorid, Fluosilikat, Fluoborat und Sulfat in deren Gemischen werden angegeben. Fluorid, Fluosilikat und Fluoborat werden durch geeignete Modifikationen der Siliciumtetrafluoridprobe nachgewiesen. Nach Entfernung dieser Ionen durch Zusatz ammoniakalischer Calciumnitratlösung wird Sulfat durch Fällung mit Bariumnitrat nachgewiesen.
    Abstract: Résumé On décrit des procédés d'identification qualitative de fluorures, fluosilicates, fluoborates et sulfates en mélanges. On identifie les fluorures, fluosilicates et fluoborates par l'essai au tétrafluorure de silicium, après modifications adéquates. On recherche les sulfates en les précipitant par le nitrate de baryum après élimination des ions précédents par addition de nitrate de calcium ammoniacal.
    Notes: Summary Procedures for the qualitative identification of fluoride, fluosilicate, fluoborate and sulphate in mixtures are described. Fluoride, fluosilicate and fluoborate are identified by suitable modifications of the silicon tetrafluoride test. Sulphate is identified by precipitation with barium nitrate, after the removal of the preceding ions by the addition of ammoniacal calcium nitrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01215467
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on the analytical chemistry of iodonium compounds. Part II (1966)
    Springer
    Microchimica acta 54 (1966), S. 539-545 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein Verfahren zur gravimetrischen Bestimmung von Diphenyljodonium als Reineckat wurde beschrieben. Es eignet sich für Mengen von 10 bis 100 mg Kation. Der Einfluß des pH und anderer Fällungsbedingungen werden besprochen. Der Variationskoeffizient beträgt ±0,21%.
    Abstract: Résumé On décrit un procédé pour le dosage du cation diphényliodonium par pesée du reineckate. La méthode couvre le domaine de 10–100 mg de cation. On discute les effets du pH et des autres conditions de précipitation. On a trouvé un coefficient de variation de ±0,21%.
    Notes: Summary A procedure is described for the determination of the diphenyliodonium cation by weighing as the reineckate. The range of the method is 10–100 mg of cation. The effects of pH and other conditions of precipitation are discussed. The coefficient of variation was ±0.21%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01219368
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  • 5
    Electronic Resource
    Electronic Resource
    Studies in qualitative inorganic analysis. Part XXXVII (1969)
    Springer
    Microchimica acta 57 (1969), S. 206-210 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Dünnschichtplatten (Polygram CEL 300) ergeben gute Trennungen der üblichen Poly- und Metaphosphate und gewisser anderer Salze sauerstoffhältiger Phosphorsäuren innerhalb 1 Stunde bei Einsatz der handelsüblichen Gemische. Ein saures und ein basisches Lösungsmittel wurden angewendet.
    Notes: Summary Prepared thin-layer plates (Polygram CEL 300) give sufficiently good separations of the common poly- and meta-phosphates and certain other oxyphosphorus salts in 1 hour for the more likely mixtures to be identified; an acidic and a basic solvent are used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01216686
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  • 6
    Electronic Resource
    Electronic Resource
    Studies on the analytical chemistry of iodonium compounds (1967)
    Springer
    Microchimica acta 55 (1967), S. 539-545 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein Verfahren zur gravimetrischen Bestimmung von Diphenyljodonium-Kation als Molybdänphosphat wurde beschrieben. Es ermöglicht die Bestimmung von 10 bis 200 mg Kation. Die Wirkung störender Substanzen und die Fällungsbedingungen wurden erörtert. Ein Variationskoeffizient von 0,11% wurde festgestellt.
    Abstract: Résumé On décrit un procédé de dosage du cation diphényliodonium par pesée à l'état de phosphomolybdate. La méthode couvre le domaine de 10–200 mg de cation. On discute les effets des substances qui interfèrent et les conditions de précipitation et l'on obtient un coefficient de variation de0,11%.
    Notes: Summary A procedure is described for the determination of the diphenyliodonium cation by weighing as the molybdophosphate. The range of the method is 10–200 mg of cation. The effects of interfering substances and the conditions of precipitation are discussed and a coefficient of variation of 0.11% has been obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01222168
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  • 7
    Electronic Resource
    Electronic Resource
    Studies in qualitative inorganic analysis. Part XXI (1965)
    Springer
    Microchimica acta 53 (1965), S. 318-321 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die durch Borat und Fluoborat verursachte Störung des Fluoridnachweises nach dem Bleiplattenverfahren läßt sich durch Prüfung auf Kieselerde und Borat im Wassertropfen vermeiden, deren Anwesenheit in der Probe hiermit eindeutig feststellbar ist.
    Abstract: Résumé On peut éliminer l'interférence des fluorures avec les borates et les fluoborates dans l'essai à la lame de plomb en effectuant la recherche de la silice et des borates sur une goutte d'eau, ce qui permet l'identification positive de la présence de silice et de borate dans l'échantillon.
    Notes: Summary Interference with the lead plate test for fluoride by borate and fluoborate can be eliminated by applying tests for silica and borate to the water drop, these tests allowing positive identification of the presence of silica and borate in the sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01215466
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  • 8
    Electronic Resource
    Electronic Resource
    Studies in qualitative inorganic analysis. Part XXIII (1965)
    Springer
    Microchimica acta 53 (1965), S. 920-930 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die in der Literatur angeführten Arbeitsvorgänge für die qualitative Analyse der Eisengruppe werden besprochen. Die Vorteile des von “The Midlands Association for Qualitative Analysis” empfohlenen Analysenganges werden diskutiert.
    Abstract: Résumé Ou présente une revue des méthodes d'analyse du groupe du fer. On discute les avantages du procédé de la «Midlands Association».
    Notes: Summary Schemes for the analysis of the Iron group are reviewed. The advantages of the Midlands Association scheme are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01219275
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  • 9
    Electronic Resource
    Electronic Resource
    Studies in qualitative inorganic analysis, part XXIV (1967)
    Springer
    Microchimica acta 55 (1967), S. 147-155 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Schemata für die qualitative Analyse der Silbergruppe im klassischen Analysengang wurden diskutiert, deren Vor- und Nachteile kritisch hervorgehoben.
    Abstract: Résumé On discute les processus d'analyse qualitative suivis pour le groupe de l'argent, en opérant par analyse classique, et l'on fait un examen critique de leurs mérites et de leurs inconvénients.
    Notes: Summary Schemes for the qualitative analysis of the silver group in the classical analysis scheme are discussed, and a critical appraisal made of their merits and disadvantages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01216494
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on the analytical chemistry of iodonium compounds. Part VI (1967)
    Springer
    Microchimica acta 55 (1967), S. 564-569 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Bin Verfahren zur Bestimmung von Diphenyliodonium-Kationen in Mengen von 50 bis 1000μg durch Extraktion als Dipicrylaminat aus alkalischer Lösung mit Chloroform wurde betrieben. Die Absorption wurde direkt im organischen Extrakt bei 400 nm gemessen; sie entspricht dem Beerschen Gesetz. Die Arbeitsbedingungen, besonders die Wirkung des PH wurden erörtert.
    Abstract: Résumé Description d'un procédé de dosage du cation diphényliodonium, dans le domaine de 50–1000 μg, par extraction à l'état de dipicrylaminate dans une solution alcaline dans le chloroforme. On effectue les mesures de densité optique directement sur l'extrait organique à 400 nm. La loi de Beer est suivie. On discute les conditions essentielles y compris les effets du PH.
    Notes: Summary A procedure is described for the determination of the diphenyliodonium cation, in the range 50–1000μg by extraction as the dipicrylaminate from alkaline solution into chloroform. Absorbance measurements are made directly on the organic extract at 400 nm. Beer's law is obeyed. Essential conditions including the effects of PH are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01222173
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