Volatile aldehydes are produced during degradation of paper-based materials. This may result in their accumulation in archival and library repositories. In the frame of this study, passive sampling was carried out at ten locations in four libraries and archives. It was found that inside the repository and particularly inside archival boxes, the concentration of VOCs and acetic acid was much higher than the concentration of outdoor-generated pollutants and indicates that monitoring of VOCs in heritage institutions should become more widespread.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 33984261Prussian blue (PB) modified titanate nanotubes (PB-TiNT) have been synthesized by the reaction of Fe2+ modified TiNT with hexacyanoferrate(III) ions. The rate constant for heterogeneous catalytic reaction between PB-TiNT and H2O2 was found to be an order of magnitude higher than the values reported for conventionally prepared, electrochemically deposited PB films. On the PB-TiNT modified electrode with subnanomolar surface concentration of PB a stable, reproducible and linear response towards H2O2 was obtained in the concentration range 0.02–4 mM at –150 mV.
F.02 Acquisition of new scientific knowledge
COBISS.SI-ID: 24239655Iron gall inks are of extraordinary historical significance considering their widespread use for over a millennium. Due to their corrosiveness, determination of acidity (pH) and degree of polymerisation (DP) of cellulose in paper is thus of high interest. Based on a well-characterized set of samples from the 18th and 19th centuries, we developed a near infrared spectroscopic method with partial least squares calibration for non-destructive determination of pH and DP. Using this method, iron gall ink drawings from the British Museum collection were analysed and their lifetime proposed.
F.02 Acquisition of new scientific knowledge
COBISS.SI-ID: 33743365Interactions between a fluoroquinolone antimicrobial agent and metal cations were studied in vitro on rat intestine membrane to prove if the decreased quinolone intestinal permeability is caused by complex formation between metal cations and fluoroquinolones. We found that the fluoroquinolone permeability decreased in the presence of metal cations and the obtained results show that the ciprofloxacin–aluminum complex does not permeate the intestinal mucosal membrane.
F.02 Acquisition of new scientific knowledge
COBISS.SI-ID: 2854257Object of the present invention is to provide alternative antioxidants for treating organic material, particularly paper, which prevent, slow down or reverse damage due to oxidation reactions and/or acid hydrolysis reactions and do not exhibit the disadvantages of the prior used formulations.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 26939909