The paper presents results of analysis of accompanying elements’ content in raw materials, products, semi-finished products and wastes in ISP technology. Close to themain elements, there are accompanying elements Fe, Cu, As, Cd, Sb, Tl in metallurgical process of zinc, lead and cadmium production. Determination of the elements’ content was done with the use of spectrometry with inductively activated plasma (AES-ICP), which allows for precise and convenient analysis of concentration of elements appearing in minute quantities in analysed materials. Knowledge of elements’ content allows for definition of materials characterised by increased concentration of the analysed elements, which gives the basis for defining the proper method of obtaining some elements and analysing of possible negative influence of some toxic elements.