Determination of the concentration of petroleum products and oils in filmsat the surface of water using a solid-electrolyte analyzer

A method was proposed for estimating the total amount of organic substance at the air-water interface. The method combines sampling by the transfer of an organic film to the probe surface with the coulometric determination of the amount of oxygen consumed for the high-temperature oxidation of the sa mple in a solid-electrolyte analyzer. The effect of the composition of the him and the material of the probe on the transfer of model oil films under the conditions of fast withdrawal of the probe From water was studied. It w as demonstrated that organic substance can be accumulated at the surface of the probe on multiple withdrawal.