Comparatwe EPR analysis of oxygen interactions with plants carbonized at different temperatures

• Autorzy: Bartłomiejczyk S. , Pilawa B. , Krzesińska M. , Pusz S. , Zachariasz J. , Wałach W.
• Języki publikacji: EN

Abstrakty

EN

Carbon materials, bamboo (Bambusa vulagris) and yucca (Yucca flaccida) pyrolysed at 550°C, 750°C and 950°C, were tested as oximetric probes by electron paramagnetic resonance spectroscopy at X-band (9.3 GHz). The following parameters of the spectra: amplitude, linewidth and g-factor, were determined. Influence of oxygen molecules 02 on EPR spectra of the individual carbon materials was compared. Strong EPR spectra were recorded for samples carbonized at 550°C and weak signals were obtained for plants carbonized at higher temperatures: 750°C and 950°C. It was stated that amplitudes of EPR lines of all the carbonized plants decrease in the air environment compared to amplitudes of spectra measured in vacuum. This effect increases with degree of vacuum. Changes in the EPR spectra of samples studied in the air environment may be applied in medicine to determination of oxygen content in different cells. Because of strong resonance signals as oximetric probes we proposed bamboo and yucca carbonized at 550°C, and we rejected plants carbonized at 750°C and 950°C with Iow EPR signals.

Słowa kluczowe

EN

carbonized plants; paramagnetic centers; paramagnetic oxygen molecules; electron paramagnetic resonance; EPR spectra; oximetry

PL

karbonizacja roślin; centra paramagnetyczne; paramagnetyczne utlenianie cząsteczek; elektroniczny rezonans paramagnetyczny; widma EPR; oksymetria

• Wydawca: Polish Society for Biomaterials in Cracow
• Czasopismo: Engineering of Biomaterials
• Rocznik: 2008
• Tom: Vol. 11, no. 73
• Strony: 3--5
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Bartłomiejczyk S.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

autor

Pilawa B.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

autor

Krzesińska M.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

autor

Pusz S.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

autor

Zachariasz J.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

autor

Wałach W.

• Centre of Polymer and Carbon Materials, Polish Academy of Science, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland

Bibliografia

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