Boris Petrovich Nikolsky (; – 4 January 1990) was a Soviet chemist and radiochemist, academician of the Soviet Academy of Sciences, and professor of Saint Petersburg (then Leningrad) State University. Boris Nikolsky was a 1925 graduate of Leningrad State University. In the 1930s he studied the ion exchange processes between aqueous solutions and solids. During that time Nikolsky developed the theory of ion exchange in glass electrodes. He derived equations that describe properties of glass electrodes as well as other types of ion-selective electrodes depending on chemical structure and multi-component composition of glass, concurrent interference of ions (see Nikolsky-Eisenman equation and Nikolsky-Shultz-Eisenman thermodynamic ion-exchange theory of GE) and so on. Boris Nikolsky also actively participated in the Soviet nuclear program. In 1952-1974 he was the senior scientist and the chairman of scientific committee at the Soviet nuclear fuel reprocessing plant Mayak, where he worked on the technology of processing and refining of plutonium. In 1961-1963 he was the chairman of the chemistry department at Leningrad State University. General publications on the glass electrode theory Nikolskii, B. P.. Theory of the glass electrode. I. Theoretical. // J. Phys. Chem. (U.S.S.R.) (1937), 10, 495-503. Nikolskii, B. P.; Tolmacheva, T. A. Theory of the glass electrode. II. Effect of boric anhydride and aluminum oxide on the electrode properties of glass. // J. Phys. Chem. (U.S.S.R.) (1937), 10, 504-12. Nikolskii, B. P.; Tolmacheva, T. A. Theory of the glass electrode. III. Transfer from the hydrogen electrode function into the sodium function. // J. Phys. Chem. (U.S.S.R.) (1937), 10, 513-23. Boris Nikolsky was a co-author of the monumental textbook on physical chemistry and an editor-in-chief of the most comprehensive multivolume handbook of chemistry in Soviet Union. References Soviet physical chemists Soviet inventors 1900 births 1990 deaths Scientists from Saint Petersburg Heroes of Socialist Labour Academic staff of Saint Petersburg State University Nuclear weapons program of the Soviet Union Full Members of the USSR Academy of Sciences