Perkutane Absorption von PCDD und PCDF aus Textilien in den Menschen
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Inhaltsangabe: Gang der Untersuchung: Diese Arbeit untersuchte in vivo an zwei menschlichen Probanden die perkutane Absorption von hochchlorierten PCDD/F "Dioxinen". Die Rückenhaut der Probanden wurde durch das Tragen hochbelasteter Textilien (normale Ladenware) mit PCDD/F kontaminiert. Die Aufnahme in die Haut wurde über sieben Tage hinweg indirekt über den Verlust der PCDD/F von der Hautoberfläche abgeschätzt. Zur Vervollständigung der PCDD/F-Massenbilanz wurden während der Versuchsdauer abschilfernde Hautschüppchen aufgefangen. Die Bestimmung der PCDD/F-Konzentrationen im pg-Bereich erfolgte mittels hochauflösender Gaschromatographie-Massenspektrometrie (HRGC/HRMS). Inhaltsverzeichnis: Inhaltsverzeichnis: InhaltsverzeichnisI Verzeichnis der Tabellen, Abbildungen und AnhängeII Verzeichnis der AbkürzungenIV DankV Summary, Zusammenfassung VI Kapitel 1Einführung1 Kapitel 2Einführung in das Themengebiet3 2.1Physikalisch-chemische Eigenschaften der PCDD/F3 2.2Toxische Wirkungen der PCDD/F4 2.3Toxizitätsabschätzung der PCDD/F4 2.4PCDD/F in Textilien5 2.4.1Pentachlorphenol als PCDD/F-Quelle5 2.4.2Dioxazinpigmente als PCDD/F-Quelle5 2.5Die Haut des Menschen6 2.5.1Aufbau der Haut6 2.5.2Das Stratum corneum als Penetrationswiderstand7 2.5.3Metabolische Aktivität in der Haut8 2.5.4Methoden zur Bestimmung der dermalen Absorption10 2.5.5Bisherige Versuche zur Absorption lipophiler Substanzen11 Kapitel 3Versuchskonzept dieser Arbeit15 3.1Erster Versuchsansatz - Homogenität der PCDD/F-Belastung16 3.2Zweiter Versuchsansatz - Absorption in die Haut16 3.3Dritter Versuchsansatz - Einflu der Faserart18 Kapitel 4PCDD/F-Analytik19 4.1Glasgeräte19 4.2Probenaufbereitung19 4.2.1Interner Aufarbeitungsstandard20 4.2.2Extraktion20 4.2.2.1Vergleich der Extraktionsmethoden20 4.2.3Probenaufreinigung21 4.2.4Chromatographische Isolierung der PCDD/F22 4.3 Herstellung der benötigten Reagenzien22 4.4GC/MS-Analytik23 4.4.1HRGC-Parameter23 4.4.2HRMS-Parameter24 4
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