Kızılırmak Yatağından Çıkarılan Doğal Silis Mineralinin EPR Spektroskopisi ile İncelenmesi

Year 2022, Volume: 2 Issue: 1, 28 - 34, 30.06.2022

Melek Fidan , Recep Tapramaz , Yusuf Şahin

Abstract

Kızılırmak yatağından alınan çakıl içinde bulunan ve yapısında organik radikaller bulunduran bir silis minerali EPR spektroskopisi ile incelenmiştir. Farklı sıcaklıklarda ve farklı mikrodalga gücü altında incelenen silis minerali içerisindeki radikallerin türü, EPR çizgilerinin şiddet dağılımlarına bakılarak belirlenmiştir. EPR spektrumlarında şiddet dağılımları birbirinden farklı olan sinyaller tespit edilmiş ve bu sinyallere ait g ve A spin-Hamiltonien parametreleri hesaplanmış ve Tablo 1ʹde verilmiştir. Literatür ile karşılaştırılarak, sinyaller camsı yapı içerisindeki 𝐶̇𝐻2, 𝐶̇𝐻3 , 𝐶̇𝐻 , 𝐶𝑂2−, 𝑂3− radikallerine atfedilmiştir.

Keywords

EPR, Radikal, Camsı yapı

INVESTIGATION OF NATURAL SILICA MINERALS FROM THE KIZILIRMAK WITH EPR SPECTROSCOPY

Abstract

A silica mineral contained in gravel taking from the Kizilirmak deposit and bearing organic radicals in its structure was investigated by EPR spectroscopy. The type of radicals in the silica mineral determined under different temperatures and different microwave power were by examining the intensity distributions of the EPR lines. In EPR spectra, the signals with different intensity distributions were detected. g and A spin-Hamiltonian parameters for these signals were calculated and given in Table 1. These signals are attributed to the 𝐶̇𝐻2, 𝐶̇𝐻3 , 𝐶̇𝐻 , C𝑂2−, 𝑂3−radicals in the glassy structure by comparing with the literature.

Keywords

EPR, radicals, glass structure

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