Radiostability of Allantoin by Using Electron Spin Resonance Spectroscopy
| Autor: | İlknur Üstündağ, Mustafa Korkmaz |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Chemistry
Infrared Annealing (metallurgy) Radical Analytical chemistry Sterilization medicine.disease_cause Atomic and Molecular Physics and Optics Analytical Chemistry law.invention law Dosimetry Differential thermal analysis medicine Allantoin Electron paramagnetic resonance Spectroscopy Glass transition Ultraviolet ESR |
| Zdroj: | Spectroscopy Letters. 47:77-85 |
| ISSN: | 1532-2289 0038-7010 |
| DOI: | 10.1080/00387010.2013.775593 |
| Popis: | The radiosterilization potential and dosimetric feature of allantoin were investigated through the molecular degradations produced after ultraviolet and gamma irradiation using electron spin resonance, infrared, and ultraviolet spectroscopies and thermal measurement techniques (differential thermal analysis and the glass transition temperature). Although ultraviolet-irradiated allantoin presents no electron spin resonance signal, gamma irradiation exhibited an electron spin resonance signal of triplet appearance. Room temperature and high-temperature line intensity and spectrum area data and their variations with applied microwave power, storage time, annealing time, annealing temperature, and applied radiation dose were analyzed by assuming the production of two different types of radicals having different spectroscopic and decay characteristics. Based on its relatively stable nature toward gamma and ultraviolet radiations, it was concluded that allantoin itself and the products containing it can be sterilized by gamma and/or ultraviolet radiations without creating a great loss in its beneficial effects in the allowed radiosterilization dose limits. © 2014 Copyright Taylor and Francis Group, LLC. |
| Databáze: | OpenAIRE |
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