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ASPECTS DE LA FABRICATION INDUSTRIELLE DE LA VITAMINE B12GOLDSTEIN S; DUCA A.1974; REV. CHIM.; ROMAN.; DA. 1974; VOL. 25; NO 4; PP. 279-284; ABS. ANGL. RUSSE ALLEM. FR.; BIBL. 56REF.Article

DOSAGE INDIRECT DE FAIBLES TENEURS DE CO2+, EN PRESENCE DE ZN2+ (OU AUTRES IONS METALLIQUES) PAR UTILISATION D'UNE ELECTRODE A MEMBRANE, SPECIFIQUE DE L'ION CN-DUCA A; MATEI F.1977; REV. CHIM.; ROMAN.; DA. 1977; VOL. 28; NO 12; PP. 1186-1188; ABS. ANGL.; BIBL. 10 REF.Article

CONTRIBUTIONS TO THE ANALYTICAL CHEMISTRY OF VITAMIN B12. THE THERMAL STABILITY OF CYANOCOBALAMIN, HYDROXOCOBALAMIN AND COBINAMIDE IN THE SOLID STATEGOLDSTEIN S; DUCA A.1982; THERMOCHIM. ACTA; ISSN 0040-6031; NLD; DA. 1982; VOL. 59; NO 2; PP. 211-220; BIBL. 17 REF.Article

O METODA EXTRACTIV-FOTOMETRICA PENTRU DETERMINAREA CONCENTRAFIILOR MICI DE VANADIU = UNE METHODE PAR EXTRACTION ET PHOTOMETRIE POUR LE DOSAGE DE PETITES QUANTITES DE VANADIUMDUCA A; CARAMLAU M.1980; REV. CHIM.; ROM; DA. 1980; VOL. 31; NO 6; PP. 582-584; ABS. ENG/RUS; BIBL. 14 REF.Article

SEPARAREA PRIN FLOTATIE A TI(IV) DIN SOLUTII DILUATE, SUB FORMA COMPLEXULUI CU STEARILAMINA. I. = LA SEPARATION PAR FLOTTATION DE TI(IV) DE SOLUTIONS DILUEES SOUS FORME DE COMPLEXE DE STEARYLAMINE. I.DUCA A; STOICA L.1978; BUL. INST. POLITEH. "GHEORGHE GHEORGHIU-DEJ" BUCURESTI, CHIM. METALURG.; ROM; DA. 1978; VOL. 40; NO 1; PP. 53-62; ABS. ENG; BIBL. 21 REF.Article

SEPARATION DE ZN2+ DE CO2+ AVEC L'ECHANGEUR D'IONS AMBERLITE LA. 2MATEI F; DUCA A.1977; REV. CHIM.; ROMAN.; DA. 1977; VOL. 28; NO 11; PP. 1105-1107; ABS. ANGL.; BIBL. 21 REF.Article

SEPARAREA PRIN FLOTATIE A COLORANTULUI "ALBASTRU MICRODIS" EXISTENT IN UNELE APE REZIDUALE = SEPARATION PAR FLOTTATION DU COLORANT "BLEU MICRODIS" SE TROUVANT DANS QUELQUES EAUX RESIDUAIRESSTOICA L; DUCA A.1980; REV. CHIM.; ROM; DA. 1980; VOL. 31; NO 11; PP. 1077-1083; ABS. ENG/RUS; BIBL. 12 REF.Article

KINETIC DETERMINATION OF CYANIDE IONS TRACESIONESCU G; DUCA A.1975; BUL. INST. POLITECH. IASI, 2; ROMAN.; DA. 1975; VOL. 21; NO 1-2; PP. 25-32; ABS. ROUM.; BIBL. 11 REF.Article

METHODES DE DETERMINATION DU RHENIUM DANS LES MOLYBDENITES. LA DETERMINATION DU RHENIUM A COTE DES TRACES DE MOLYBDENEDUCA A; CALU C.1972; ANALUSIS; FR.; DA. 1972; VOL. 1; NO 5; PP. 365-367; BIBL. 30 REF.Serial Issue

DETERMINATION OF CYANOCOBALAMIN BY THERMAL DECOMPOSITION OF THE CYANO GROUP, USING AN ION-SELECTIVE ELECTRODE.GOLDSTEIN S; DUCA A.1976; J. PHARM. SCI.; U.S.A.; DA. 1976; VOL. 65; NO 12; PP. 1831-1833; BIBL. 15 REF.Article

CONTRIBUTIONS TO THE STUDY OF THE REACTION ALIZARIN RED S-HYDROGEN PEROXIDE-CO2+. I. INFLUENCE OF THE CYANIDE IONIONESCU G; DUCA A.1974; BUL. INST. POLITEH. IASI, 2; ROMAN.; DA. 1974; VOL. 20; NO 3-4; PP. 15-24; ABS. ROUM.; BIBL. 17 REF.Article

ON THE POLAROGRAPHIC REDUCTION OF GRISEOFULVIN AND SOME OF ITS DERIVATIVESUNTERMAN HW; DUCA A.1974; ISRAEL J. CHEM.; ISRAEL; DA. 1974; VOL. 12; NO 5; PP. 985-988; BIBL. 9 REF.Article

ANALYTICAL-KINETICAL STUDY ON THE QUINALIZARIN-HYDROGEN PEROXIDE INDICATOR REACTION FOR CO2+ DETERMINATIONIONESCU G; DUCA A; MATEI F et al.1980; MICROCHIM. ACTA; AUT; DA. 1980; VOL. 1; NO 5-6; PP. 329-338; BIBL. 24 REF.Article

ANALYTICAL-KINETICAL STUDY ON THE QUINALIZARIN-HYDROGEN PEROXIDE INDICATOR REACTION FOR CO2+ DETERMINATIONIONESCU G; DUCA A; MATEI F et al.1980; MIKROCHIM. ACTA; ISSN 0026-3672; USA; DA. 1980; VOL. 1; NO 5-6; PP. 329-338; ABS. GER; BIBL. 24 REF.Article

KINETIC ASPECTS OF THE OXIDATION REACTION OF GALLIC ACID USING AN OXYGEN-SELECTIVE ELECTRODEIONESCU G; MATEI F; DUCA A et al.1978; REV. ROUMAINE CHIM.; ROM; DA. 1978; VOL. 23; NO 11-12; PP. 1611-1617; BIBL. 5 REF.Article

A NEW CATALYTIC REACTION FOR THE DETERMINATION OF CO2+-TRACES.IONESCU G; DUCA A; AELENEI N et al.1976; BUL. INST. POLITEH. IASI, 2; ROMAN.; DA. 1976; VOL. 22; NO 1-2; PP. 23-29; ABS. ROUM.; BIBL. 6 REF.Article

INDIRECT DETERMINATION OF VITAMIN B12 THROUGH KINETIC DETERMINATION OF COBALT AND CYANIDEIONESCU G; DUCA A; MATEI F et al.1980; CHEM. ANAL.; ISSN 0009-2223; POL; DA. 1980; VOL. 25; NO 2; PP. 223-228; ABS. POL; BIBL. 26 REF.Article

UTILIZAREA ELECTRODULUI-MEMBRANA LICHID AZOTAT-SELECTIV IN SISTEME CU CONCENTRATII MARI DE HALOGENURI = UTILISATION D'UNE ELECTRODE A MEMBRANE LIQUIDE, SPECIFIQUE DES NITRATES, DANS DES SYSTEMES A HAUTES CONCENTRATIONS D'HALOGENURESDUCA A; DONIGA E; MATEI F et al.1979; REV. CHIM.; ROM; DA. 1979; VOL. 30; NO 9; PP. 916-918; ABS. ENG; BIBL. 8 REF.Article

CONTRIBUTIONS TO ANALYTICAL CHEMISTRY OF VITAMIN B12. DETERMINATION OF SMALL AMOUNTS OF CYANOCOBALAMINE IN PRESENCE OF CYANIDE AND ANALOGUES OF VITAMIN B12 BY MEANS OF A CYANIDE ELECTRODE WITHOUT DISTILLATION OF HYDROGEN CYANIDEDUCA A; GOLDSTEIN S; CALU C et al.1975; MIKROCHIM. ACTA; AUTR.; DA. 1975; NO 2-3; PP. 187-195; ABS. ALLEM.; BIBL. 21REF.Article

A NEW INDICATOR REACTION FOR KINETIC DETERMINATION OF TRACES OF COBALTDUCA A; MATEI F; IONESCU G et al.1980; TALANTA (OXF.); ISSN 0039-9140; GBR; DA. 1980; VOL. 27; 11A; PP. 917-919; BIBL. 20 REF.Article

INDIRECT KINETIC DETERMINATION OF SMALL AMOUNTS OF CO2+ USING AN ELECTROCHEMICAL SENSOR FOR OXYGENMATEI F; IONESCU G; DUCA A et al.1979; REV. ROUMAINE CHIM.; ROM; DA. 1979; VOL. 24; NO 1; PP. 99-103; BIBL. 8 REF.Article

DETERMINAREA FOTOMETRICA SI EXTRACTIV FOTOMETRICA A VANADIULUI CU REACTIVAL 2-HIDROXI-5-NITROBENZEN 1,1-AZO-BETA -NAFTOL = DOSAGE PHOTOMETRIQUE ET EXTRACTION PHOTOMETRIQUE DU VANADIUM AVEC LE REACTIF HYDROXY-2 NITRO-5 BENZENE-1-AZO-1 BETA -NAPHTOLCARAMLAU M; DUCA A; MOROI G et al.1978; REV. CHIM.; ROM; DA. 1978; VOL. 29; NO 10; PP. 983-986; ABS. ENG; BIBL. 12 REF.Article

ETUDE DE LA REACTION DE L'ACIDE PHOSPHOVANADOMOLYBDIQUE AVEC LE VERT MALACHITECARAMLAU M; MOROI G; DUCA A et al.1974; REV. CHIM.; ROMAN.; DA. 1974; VOL. 25; NO 6; PP. 521-524; BIBL. 12 REF.Article

THE INTERPRETATION OF THE KINETIC DATA CONCERNING THE ZN2+ LINKING AND ELUTION ON ION EXCHANGE MEMBRANESMATEI F; DUCA A; IONESCU G et al.1980; REV. ROUM. CHIM.; ISSN 0035-3930; ROM; DA. 1980; VOL. 25; NO 7; PP. 1017-1024; BIBL. 24 REF.Article

QUANTITATIVE DETERMINATION OF VITAMIN B12 BY CYAN DOSAGE, WITH INFRARED ABSORPTION SPECTROPHOTOMETRYGOLDSTEIN S; CIUPITOIU A; VASILESCU V et al.1975; MIKROCHIM. ACTA; AUTR.; DA. 1975; NO 1; PP. 117-123; ABS. ALLEM.; BIBL. 18REF.Article

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