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  • 1
    Electronic Resource
    Electronic Resource
    Different techniques for determining the coating weight of phosphate layers on galvanized steel by means of FT-IR-spectrometry (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 36-41 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The determination of the weight per unit area (“coating weight”) of phosphate layers on galvanized steel by means of FT-IR-spectrometry has been performed by three different techniques: (i) principal component regression (PCR) of absorption data, (ii) utilizing the thickness dependent wavenumber shift of a band due to a special optical surface effect observed with parallel-polarized radiation and (iii) of an interference band observed with perpendicular-polarized radiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050340
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  • 2
    Electronic Resource
    Electronic Resource
    Schwingungsspektren und Kraftkonstanten symmetrischer Kreisel-XVI. Matrix-IR-Spektren und harmonische Kraftfelder von CF3Cl und CF3Br-12C und -13C
    Amsterdam : Elsevier
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Section 35 (1979), S. 875-882 
    Details
    ISSN: 0584-8539
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0584-8539(79)80051-3
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  • 3
    Electronic Resource
    Electronic Resource
    Vibrational Spectra of the Cyclic SN-Compounds S"4N"4, S"4N"4H"4 and S"3N"3Cl"3
    Amsterdam : Elsevier
    Journal of Molecular Structure 48 (1978), S. 313-323 
    Details
    ISSN: 0022-2860
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-2860(78)87241-X
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  • 4
    Electronic Resource
    Electronic Resource
    IR-Spectroscopic investigations on phosphated galvanized steel (1994)
    Springer
    Microchimica acta 116 (1994), S. 101-109 
    Details
    ISSN: 1436-5073
    Keywords: infrared spectroscopy ; infrared reflection spectroscopy ; FT-IR ; conversion coating ; phosphate coating ; galvanized steel ; hopeite ; phosphophyllite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Hopeite-type phosphate coatings in which zinc is replaced by other metals like nickel, manganese and magnesium are of great interest as conversion coatings on galvanized steel in the automotive and appliance industries. The analytical characterization of such coatings produced in special processes is not possible by XRD because the different types of hopeite are isomorphic. In this paper it is shown that the kind of metal substitution is responsible for certain specific features in the infrared reflection spectra. Furthermore the structural changes caused by dehydration due to heating of the coatings were studied and differences in the thermal stability of the different coatings thus could be observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01244068
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  • 5
    Electronic Resource
    Electronic Resource
    Application of factor analysis in EDXRF (1997)
    Springer
    Fresenius' journal of analytical chemistry 359 (1997), S. 61-66 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract  The application of factor analysis in EDXRF as a method for evaluation of elemental concentrations and calculation of net peak areas is demonstrated in two examples. A quantitative PCR-analysis of sulphur interfered with by molybdenum could be performed by using the XRF-spectra as input with a standard error of analysis (SEA) below 0.2 mg/g for aqueous and 3.6 mg/g for solid samples. By using PCR-predicted net peak areas as input for the empirical evaluation method developed by Lucas-Tooth and Price, the SEA for solid samples could be decreased to 2.3 mg/g. The comparison of PCR to PLS showed no significant difference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050536
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  • 6
    Electronic Resource
    Electronic Resource
    Aufnahme von Infrarot-Emissionsspektren dünner Schichten auf Metalloberflächen mit Hilfe eines rechnergekoppelten Gitterspektrometers (1981)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 308 (1981), S. 321-326 
    Details
    ISSN: 1618-2650
    Keywords: Analyse von Metalloberflächen ; Spektrometrie, IR, Emission ; rechnergekoppeltes Gitterspektrometer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung IR-Emissionsspektroskopie bei niedrigen Temperaturen wurde bisher wegen der geringen Strahlungsenergie nur in Einzelfällen als analytische Untersuchungsmethode angewandt, wobei vielfach Michelson-Interferometer eingesetzt wurden. In der vorliegenden Arbeit wird gezeigt, daß ein IR-Gitterspektrometer mit leistungsfähiger Optik und elektronischer Signalverarbeitung eine für die Aufnahme von IR-Emissionsspektren guter Qualität ausreichende Empfindlichkeit und Genauigkeit besitzt. Die Auswertung der Meßergebnisse erfolgt durch einen mit dem Spektrometer on-line gekoppelten Minicomputer. Die Probe befindet sich an ihrem üblichen Platz im Probenraum und muß auf konstante Temperatur erwärmt werden. Insbesondere bei der Untersuchung von dünnen Schichten auf Metallen ist dieses Verfahren leistungsfähig und kann Vorteile gegenüber anderen Meßmethoden bieten.
    Notes: Summary Infrared emission spectroscopy at moderate temperatures has been applied for analytical investigations in special cases only, often using Michelson interferometers. It is shown here that the sensitivity and accuracy of an IR grating instrument with high-performance optics and electronic recording allows emission spectra of good quality to be taken on a routine basis. Evaluation is performed by a minicomputer coupled on-line to the spectrometer. The sample is placed at its usual position in the sample compartment and has to be kept at a constant elevated temperature. Especially for the investigation of thin films on metals, this is a powerful analytical method and may offer advantages over other methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00516246
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  • 7
    Electronic Resource
    Electronic Resource
    Die Infrarot-Spektroskopie als Methode zur chemischen Charakterisierung von dünnen Schichten auf Metallen (1984)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 319 (1984), S. 743-750 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die üblichen Nachweisempfindlichkeiten in der Infrarot-Spektroskopie [27] erlauben Reflexionsmessungen an dünnen Filmen auf Metallen bis herab zu Schichtdicken von ca. 1μ. Sollen noch wesentlich dünnere Filme analysiert werden, so bedarf es spezieller Methoden. Hierzu gehört die Reflexions-Absorptions-Spektroskopie (IR-RAS), bei der mit parallel zur Einfallsebene polarisierter IR-Strahlung und großen Einfallswinkeln gearbeitet wird. Der Empfindlichkeitsgewinn der IR-RAS wird am vorteilhaftesten mit rechnergekoppelten dispersiven oder Fourier-Transform-Spektrometern genutzt. Auf Grund ihrer hohen Aussagekraft über die unzersetzte molekulare oder ionogene Oberflächen-Spezies ist die IR-RAS eine wichtige Ergän zung zu Methoden wie ESCA, Auger und SIMS.
    Notes: Summary Usual sensitivities in infrared spectroscopy [27] allow for measurement of thin films on metals down to about 1 μ. If films are much thinner special methods have to be applied. One of these is Reflection Absorption Spectrometry (IR-RAS) using infared radiation with large angles of incidence and a polarization plane parallel to the plane of incidence. The sensitivity gain of IR-RAS is best utilized with computer-aided dispersive or Fourier-Transform spectrometers. As Infared Spectroscopy provides a high amount of information about undestroyed molecular or ionogenous surface species, IR-RAS is becoming an important supplement to methods like ESCA, Auger and SIMS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01226764
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  • 8
    Electronic Resource
    Electronic Resource
    Schwingungsspektren isotopensubstituierter B-Trifluor-und - Trichlor-BorazoleProfessor Josef Goubeau zum 80. Geburtstage am 31. März 1981 gewidmet (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 474 (1981), S. 182-191 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vibrational Spectra of Isotope-labelled B-Trifluoro and B-Trichloro BorazinesThe infrared and Raman spectra of (BF—NH)3, (10BF—NH)3, (BF—ND)3, (BCl—NH)3, (10BCl—NH)3, (BCl - 15NH)3, (10BCl - 15NH)3, (BCl—ND)3, (10BCl—ND)3, (BCl - 15ND)3 and (10BCl - 15ND)3 have been recorded. Most of the recent assignments are confirmed and supplemented by heretofore missing Raman frequencies of species A′1 and E″. For six of the seven vibrations of species E′ of (BF - NH)3, the Coriolis coupling constants have been computed from the band envelopes of the gas phase infrared spectra.
    Notes: Die Infrarot- und Raman-Spektren von (BF—NH)3, (10BF—NH)3 (BF—ND)3, (BCl—NH)3, (10BCl—NH)3, (BCl—15NH)3, (10BCl - 15NH)3, (BCl—ND)3, (10BCl—ND)3 (BCl - 15ND)3 und (10BCl - 15ND)3 wurden aufgenommen. Die Zuordnungen zu den Normalschwingungen konnten bestätigt und durch Auffindung bisher unbeobachteter Raman-Linien in den Rassen A′1 und E″ ergänzt werden. Für sechs der sieben E′-Schwingungen des (BF—NH)3 konnten aus den Bandenkonturen der IR-Gasspektren die Coriolis-Kopplungskonstanten ermittelt werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814740318
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