[Surface charge of plasma lipoproteins from the data of potentiometric studies]

The method of potentiometric titration is used to measure a surface very low, low- and high-density charge of the human blood plasma lipoproteins. Density of the surface charges is -0.5 X 10(-2); -0.2 X 10(-2); -3.4 X 10(-2) K/m2, respectively. The surface area of the lipoproteins determined by the method of radiation-free energy transfer between fluorescent probes amounts to 185.9; 241.7 and 426.8 m2 per 1 g of lipoprotein, respectively. Results of the experiments satisfactorily coincide with the data, obtained by other methods.