Kemijsko određivanje teških metala na koncentratima olova i cinka u Trepçi (Kosovo) i studija korelacijskih koeficijenata između kemijskih podataka

Kosovo ore deposits are located in the Trepça belt which extends for over 80 km. The concentrate produced by the flotation process of the Trepça metallurgical corporation contains a considerable quantity of valuable metals, such as Pb, Zn, Fe and minor accompanying metals such as Cd, Cu, As, Sb, Bi, Ag, Au, etc. The subject of this work was to assess the concentration of major and minor metals in lead and zinc concentrates of Trepça and to study the correlation coefficients between metals. Chemical determination of concentrates was performed by using atomic absorption spectroscopy (AAS). In the content on lead concentrate samples, the following were found: Pb>Fe>Zn> Ag> As>Sb>Cd. In the content of zinc concentrate, the following were found: Zn>Fe>Pb>Ag>As>Cd. The program “Statistica ver. 6.0” has been used for calculations of basic statistical parameters, relationships between data and cluster analysis of R-mode. R-mode cluster analysis on lead concentrate samples showed that Pb has the closest linkages with Fe and they form one branch of the dendogram. On the zinc concentrate samples, Zn has the closest linkages with Fe and they form one branch of the dendogram.Kosovski rudni depoziti nalaze se u pojasu Trepçe, koji se prostire u duljini više od 80 km. Koncentrat proizveden u flotacijskome procesu metalurške korporacije Trepça sadržava znatnu količinu vrijednih metala, kao što su Pb, Zn, Fe, i manje količine pratećih metala, kao što su Cd, Cu, As, Sb, Bi, Ag, Au itd. Predmet ovoga rada bio je ispitati koncentracije metala u koncentratima olova i cinka u Trepçi i odrediti koeficijente korelacije između metala. Karakterizacija ispitanih uzoraka provedena je upotrebom atomske adsorpcijske spektroskopije (AAS). U sadržaju uzoraka olovnih koncentrata pronađeni su: Pb, Fe, Zn, Ag, As, Sb, Cd. U sadržaju koncentrata cinka pronađeni su: Zn, Fe, Pb, Ag, As, Cd. Program „Statistica ver. 6,0” korišten je za izračun osnovnih statističkih parametara, korelacijskih koeficijenata između podataka i klasterske analize R-modaliteta. Klasterska analiza R-modaliteta na koncentratima olova pokazala je da Pb ima najbliže veze s Fe, tako da zajedno čine jednu granu dendograma. Na uzorcima koncentrata cinka Zn ima najbliže veze s Fe, tako da zajedno čine jednu granu dendograma