Effect of Irradiation Dose and Storage Time on the EPR Signal Intensities of Gamma Irradiated Sulfapyridine

Year 2016, , 0 - 0, 30.09.2016

Kerem Sütçü

https://doi.org/10.31202/ecjse.258565

Cited By: 1

Abstract

Abstract:The interest in sterilizing the medicine using gamma energy is increasing. However, radiation may cause molecular degradation in the sample and thus may lead to the formation of free radicals due to high energy. This study aims to determine the radiation sensitivity of sulfapyridine (SU) irradiated with a predetermined dose using EPR spectroscopy. In the EPR spectra recorded at room temperature prior to radiation process, no EPR signal was observed. However, after the irradiation with gamma rays, EPR signal intensity increased significantly based on the irradiation dose.Mathematical functions and correlation coefficients were calculated determining the relation between the increasing radiation doses on the signal intensities of the sample. The stability of the free radicals created after the irradiation in time was investigated by recording the spectra of the sample irradiated with a dose value of 15 kGy in certain intervals. The results were found to be in good agreement with the existing literature data.

Işınlama Dozunun ve Depolama Süresinin Gama ile Işınlanmış Sülfapridinin Sinyal Şiddeti Üzerine Etkisi

Abstract

İlaçların gama enerjisi kullanılarak sterilizasyonuna olan ilgi artmaktadır. Ancak radyasyon yüksek
enerjisinden dolayı örnekte moleküler yıkımlara sebep olabilmekte ve bu durum örnekte serbest radikaller
oluşturabilmektedir. Bu çalışmanın amacı; belirli dozlarda ışınlanan sülfapridinin (SU) radyasyon duyarlılığını
EPR spektroskopisi kullanarak belirlemektir. Işınlanmamış örneğin elde edilen EPR spektrumlarında hiç bir EPR
sinyali gözlenmezken; gama ışınları ile ışınlanmanın ardından, artan ışınlama dozuna bağlı olarak belirgin EPR
sinyalleri elde edildi. Örneğin artan radyasyon dozuna bağlı sinyal şiddetindeki artışı tanımlayan matematiksel
denklemler ve korelasyon katsayıları hesaplandı. 15 kGy ışınlanmış örneğin belirli aralıklarla spektrumları
kaydedilerek ışınlama işleminden sonra oluşan serbest radikallerin kararlılığı incelendi. Sonuçların mevcut
literatür verileri ile uyum içinde olduğu tespit edildi.

Keywords

Elektron Paramanyetik Rezonans (EPR), Radyasyon Duyarlılığı, Antibiyotik

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