TY JOUR TI Instrumental methods in the forensic investigation of narcotic drugs KW narcotic drugs KW liquid and gas chromatography KW mass spectrometry KW IR spectrometry KW UV spectrometry for the determination of narcotic drugs KW instrumental methods of technical and forensic investigation of narcotic drugs JO Forensic examination and research AU Vinogradova, N.I. AU Grebneva, A.S. PY 2025 IS 0 PB Moscow University of the Ministry of Internal Affairs of Russia named after V.Ya. Kikot