TY JOUR TI DEVELOPMENT WAY OF FRACTIONAL DIVISION OF OIL FOR THE SOLVING PROBLEMS OF DIAGNOSTICS AND IDENTIFICATION OF POLLUTION KW oil KW oil products KW fractions KW columnar chromatography KW examination JO Problems of risk management in the technosphere AU Martynov, V.F. AU Belshina, J.N. PY 2013 IS 2013 PB Saint-Petersburg University of State Fire Service of Emercom of Russia