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Electron beam irradiation of r-SANEX and i-SANEX solvent extraction systems : analysis of gaseous products

Szreder T., Kocia R.

Nukleonika

2015

Vol. 60, No. 4, part 2

899--905

1-Octanol/kerosene mixtures and water contacted with organic solvents were used as model solutions for r-SANEX and i-SANEX extractions systems. Investigations aimed on a quantitative evaluation of gaseous products generated in these systems under exposure to an electron beam irradiation. Influence of O2, HNO3 and the presence of model ligands and complexes on the radiation chemical yields was studied. Relatively high G(H2) values (up to 420 nmol∙J-1) for the organic phase compromise the safety issues of the extraction process and should be considered on the stage of extraction apparatus design. Based on the obtained results gaseous hydrocarbons seem to have negligible impact on safety issue. The upper limit of G(H2) values in water contacted with organic phase was established to be 85 nmol∙J-1. This value is relatively low, however, the literature data indicate that G(H2) values measured in aqueous solutions are over twice higher for α-particles irradiation than for electron beam or γ-irradiation. Thus, further investigations of these systems are necessary.

The study of interactions between ibuprofen and bovine serum albumin

Jasińska A., Ferguson A., Mohamed W. S., Szreder T.

Zeszyty Naukowe. Chemia Spożywcza i Biotechnologia / Politechnika Łódzka

2009

Z. 73

15-24

Investigation of the interactions between ibuprofen and Bovine Serum Albumin was carried using UV-Vis absorption and fluorescence methods. There was a quenching effect found between these two molecules in the fluorescence methods.

W pracy zbadano oddziaływania pomiędzy ibuprofenem i surowiczą albuminą, przy użyciu metod spektroskopii absorpcyjnej UV-Vis oraz metod fluorescencyjnych. Wyniki wskazują na występowanie efektu wygaszania BSA przez ibuprofen.