The restriction of emission of volatile organic compounds from industry, production and consumption and solvents is often based on combustion processes. The total combustion of organic mixtures to CO₂ and H₂O at high temperatures increases the costs of the burning. The problem can be partly solved by the use of a suitable catalyst allowing perfect incineration at lower temperatures. The catalyst efficiency is different for various types of organic compounds and depends on the mechanism of reactions occurring on the catalyst surface. The combustions of compound mixtures and commercial thinners were measured and two types of platinum and oxide catalysts were tested. Monitoring of concentration of organic compounds was carried out by continuous recording with a FID detector and by GC-MS analysis of intermediate combustion products.