Introduction of the Inductively coupled plasma (ICP–OES) method for the characterization of ”Guber” Srebrenica mineral waters
The mineral waters of "Guber" Srebrenica are highly mineralized waters with a significant content of soluble iron. They belong to iron-sulfate waters, which are rich in arsenic and therefore also called iron-arsenic waters with low pH values. Some of the "Guber" waters of Srebrenica were used for therapeutic purposes in the past. Spectrophotometric...
By Dragica Lazić, Mirko Radić, Dragana Kešelј, Dragana Blagojević, Milenko Smiljanić, Nebojša Vasilјević
Conventional and ultrasound-assisted extraction of (poly)phenols from elderberry flowers Sambucus Nigra L.
In this paper, conventional solid-liquid extraction and ultrasound-assisted extraction were utilized for (poly)phenols extraction from black elderberry flowers. The extraction lasted 30 to 120 min, with a solid-to-solvent ratio of 1:15 w/v and 1:30 w/v and solvents of 30% and 60% ethanol. Total (poly)phenols, flavonoids and anthocyanins contents we...
By Nebojša Vasiljević, Vladan Mićić, Milorad Tomić, Dragica Lazić, Ljubica Vasiljević, Duško Kostić
Occupational Safety and Health Management at Alumina Ltd
Occupational safety and health (OSH) is an integral part of the organization of work, and includes measures and means necessary to achieve safe working conditions. In terms of the current Law on Occupational Safety and Health of the Republic of Srpska, among other things, the employer is responsible for drafting the Risk Assessment Act. This paper ...
By Dragana Pavlović, Dragica Lazić, Dragana Kešelј, Zoran Petrović, Dragana Dragojlović, Nebojša Vasilјević