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Kopplung der Curie-Punkt-Pyrolyse mit einem Ionenmobilitätsspektrometer zur Kunststoffidentifizierung / Coupling of Curie point pyrolysis with an ion mobility spectrometer for identification of synthetic materialsSteltz, Tatjana 11 November 2004 (has links)
In this work an efficient system on the basis of the Curie point pyrolysis and the ion mobility spectrometry will be developed. Ten types of polymeric materials were examined as test-substances: polyurethanes, polyvinyl chloride, acrylonitrile -, 1,3-butadiene -, styrene-copolymer, polystyrene, polybutylene terephthalate, polymethyl methacrylate, polyamide, polyethylene, polypropylene and polycarbonate. To the evaluation of the analysis-results cluster analysis and the radius-basis-function-network were used. The received results have shown that the PY/IMS-system is well suitable in connection with multivariate analysis for the identification of the above-mentioned plastics
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Identitätskontrolle pharmazeutischer Hilfsstoffe mit Hilfe der NIR-Spektroskopie und Aufbau einer entsprechenden Datenbank / Identity control of pharmaceutical adjuvants via NIR-spectroscopy and build up an appropriate databaseAschenbroich, Gregor 19 December 2005 (has links)
Pharmaceutical adjuvants or excipients are important ingredients of medicaments. These substances are used as support and for building the matrix for the active ingredients. In this way, the active ingredients will be realised in accurately and defined way at the specific site of action. In this study, the most important pharmaceutical adjuvants are characterised and analysed via near infrared-spectroscopic methods. The powdery samples were measured by means of diffuse reflectance with six NIR-spectrometer. The obtained NIR-spectra were used to build a near infrared spectra library based on SpecInfo systems of the firm Chemical Concepts. Furthermore, discrimination analysis were carried out, while reference spectra were compared with the database for performing an identity control.
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