High molecular compounds of petroleum

1. Permanent recording of the luminescence picture with the help of colon photography provides the possibility of fully objective assessment of the qualitative difference in the luminescent radiation of various. components of the high-molecular resinous compounds of petroleum. 2. Lead glass is a satisfactory and convenient filter which retains the ultraviolet rays and thereby eliminates their influence on the photographic film. 3. The supplementing by color photography of luminescence analysis is an objective method for qualitative evaluation of the chemical changes in the components of the high-molecular resins of petroleum.