hrvatski

Analiza uredskih papira metodom EDXRF spektrometrije

Because of few literature data related to elemental composition of paper, in this work, using EDXRF method, concentrations of the following elements were determined: Pb, Rb, Sr, Y, Zr, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn and Co, in ash-samples of papers for writing, copying and computer printing. Papers for ink-jet, laser and digital printing were analyzed. Non-Impact Process printing techniques are increasingly used, therefore photo-copiers are progressively taking jobs from small offset printing shops. For that reason, ashes of copying papers printed by laser and ink-jet printers were also analyzed. Non-coloured and coloured papers of various manufacturers and grammages were considered (PAN paper, by PAN, Croatia ; Navigator paper, by Soporcel S.A., Portugal ; IBM paper, by IBM Corporation Armonk, NY, USA ; IQ Premium paper, by Neusiedler, Slovakia ; Fabriano paper, by Fabriano, Italy ; and yellow, blue, red and green Adagio papers, by Adagio, Italy). Most of the elements measured in papers showed the lowest concentrations in the ashes of Navigator and Copier papers (Sorpocel S.A., Portugal). Adagio papers contain the highest concentrations of strontium, manganese and copper, and Fabriano papers the highest concentrations of zirconium. The concentrations of the elements Co, Mn, Cr and Ti in the Navigator paper printed by laser printers are significantly higher compared to the non-printed papers. In Fabriano papers the concentrations of the elements Cr, V and Cu as well as organic content increases with paper grammage from 80 to 160m2/g, while opposite was found for the amount of Pb, Rb, Sr, Y, Zr, K, Ca, Ti, Fe, Ni and Zn.

EDXRF; Elemental; Analysis; Copying paper; Laser prints; Ink-jet prints

nije evidentirano