Applicability of Iron(III) Hexamethyleneditiocarbamate as Colloid Collector for Flotation on Preconcentration and Separation of Some Trace Elements in aragonite Before Their AAS Determination

K. CUNDEVA, G. PAVLOVSKA, T. STAFİLOV, D. ZENDELOVSKA

Determination of nitrates in food products

Kirovska Olga CIGULEVSKA

Lead (II) and Cobalt (III) Hepthyldithiocarbamates as New Coflotation Reagent for Preconcentration of Cadmium Before its ETAAS Determination

Trajce STAFİLOV, Gorica PAVLOVSKA, Katarina ČUNDEVA

Analytical Raman Spectroscopy

Constantinos A. GEORGİOU

Programme utilization of molecular spectroscopy methods at the organic compounds investigation

R. G. ZHBANKOV, M. V. KOROLEVICH, B.G. DERENDYAEV, V. N. PIOTTUKH-PELETSKY

Determinations of Nitrates in Food Products

Olga Kirovska CİGULEVSKA

Programme Utilization of Molecular Spectroscopy Methods at the Organic Compounds Investigations

R. G. ZHBANKOV, M. V. KOROLEVİCH, B. G. DERENDYAEV, V. N. Piottukh PELETSKY

Unified Gas Chromatographic Method for Determination of Methanol in Natural Gas and Related Products

N. N. KİSLENKO, S. A. ARYSTANBEKOVA, A. A. GERAS'KİNA

Peculiarities of behavior of macroheterogeneity parameter of elements in heterogeneous alloys and new technologies in atomic emission spectroscopy

S. V. TVERDOKHLEBOVA

Extraction of Stinging Nettle (Urtica dioica L.) with Supercritical Carbondioxide

V. RAFAJLOVSKA, Z. DJARMATİ, V. NAJDENOVA, Lj. CVETKOV