TY JOUR TI Problems of normative regulation of special chemicalsuse and safety in operational detective activities KW special means of operational detective activities KW special chemical substances KW special means KW security KW operational detective activities KW means of trace formation JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Tambovtsev, A.I. PY 2024 IS 2024 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION