An analysis of industrial wastes is a difficult and complicated procedure because of their complex contents which depend on the nature of production and technology being used. The present paper gives selected analytical problems concerning the determination of nickel and iron in wastes coming from the metalurgical industry. It has been concluded that the methods of mineralizing wastes need to be adjusted to their complexity. For emulsion wastes the most suitable method is microwave mineralization.
4. DOJLIDO J., Instrumental methods of investigation water and waste water, Arkady, Warszawa 1980 (in Polish).
5. NAMIEŚNIK J., ŁUKASIK J., JAMROGIEWICZ Z., Collection of environmental samples to analysis, PWN, Warszawa 1995 (in Polish).
6. PN-92/C-04570.01 - Water and waste water. Test for metals by atomic absorption spectrometry. Determination of zinc, copper, cadmium, nickel, manganese, lead, cobalt and iron.
7. PN-92/C-04570.04 - Water and waste water. Test for metals by atomic absorption spectrometry. Determination of zinc,copper, lead, cadmium, nickel, cobalt, iron and manganese in water with preliminary concentration by chelation and extraction.
8. PN-91/C-04614.03 - Water and waste water. Test for nickel. Determination of nickel by colorimetric method with dimethyloglyoxime.
9. PN-90/C-04586.04 - Water and waste water. Test for iron. Determination of total iron and total dissolvent iron by spectrophotometric method with disodium bathophenantroline disulphonate or with 1,10-phenantroline.
10. HERMANOWICZ W., Physico-chemical investigation of water and sewage, Arkady, Warszawa, 1976 (in Polish).