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  1. 1 Detcheva A.

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  3. 1 Georgieva R.

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Chemical and technological characterization of medieval glass bracelets from South-East Bulgaria

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Georgieva R., Detcheva A., Dimitriev Y.
Open Chemistry
|
2014
|
vol. 12
|
issue 11
1169-1175
EN
The present paper deals with chemical and physicochemical characterization of seven glass fragments of medieval glass bracelets from South-East Bulgaria. Samples were investigated by Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and differential thermal analysis (DTA). Gravimetric chemical analysis was used for silica assessment. Flame photometry was applied to determine sodium and potassium content while aluminium, calcium and magnesium were determined by flame atomic absorption spectrometry after dissolution using a mixture of acids. All investigated artefacts are soda-lime-silica glasses and when produced two different recipe norms were used. Important technological parameters of glass manufacturing were determined and discussed. This investigation throws light on the technological development and production of glass during medieval times.
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