Chemistry Journal of Moldova
- SCOPUS Journal Metrics for year 2023:
- CiteScore 0.9;
- Source Normalized Impact per Paper (SNIP) 0.094;
- SCImago Journal Rank (SJR) 0.133.
TOP DOWNLOADED ARTICLES
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Mihail Iacob
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9. STUDIES ON THE WATER SOLUBILIZATION
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SOIL OF SOROCA DISTRICT, REPUBLIC OF
MOLDOVA
Elena Culighin
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NANOPARTICLES
Mihail Iacob
(downloads: 1156)
2. SYNTHESIS OF DIFFERENT STRUCTURAL TYPES
OF ZEOLITES IN THE
HALLOYSITE-DOLOMITE-OBSIDIAN SYSTEM
Gunel Mamedova
(downloads: 782)
3. A NOVEL GREEN SYNTHESIS OF NICKEL OXIDE
NANOPARTICLES USING ARABIC GUM
Saeid Taghavi Fardood, Ali Ramazani, Sajjad Moradi
(downloads: 662)
4. SYNTHESIS, CHARACTERIZATION AND
MOLECULAR DOCKING OF CHLORO-SUBSTITUTED
HYDROXYXANTHONE DERIVATIVES
Emmy Yuanita, Harno Dwi Pranowo, Mustofa Mustofa, Respati Tri Swasono, Jufrizal Syahri, Jumina Jumina
(downloads: 517)
5. ROLE OF CYCLODEXTRINS IN NEW
ANTIMYCOBACTERIAL FORMULATIONS
Veaceslav Boldescu, Fliur Macaev, Gheorghe Duca
(downloads: 470)
6. SILVER AND ZINC NANOPARTICLES
BIOSYNTHESIS USING LAUREL EXTRACT AND
INVESTIGATION OF THE PHOTOCATALYTIC
PROPERTIES
Recep Taş, Ebru Köroğlu, Ahmet Karakuş, Ali Savaş Bülbül, Nilay Akkuş Taş
(downloads: 427)
7. SYNTHETIC TRANSFORMATIONS OF
ENT-KAURENOIC ACID
Olga Morarescu
(downloads: 427)
8. INVESTIGATION OF VARIOUS INFLUENCING
FACTORS OF HYDROTHERMAL SYNTHESIS OF
ANALCIME ZEOLITE
Gunel Mamedova, Gunel Nasirli
(downloads: 425)
9. STUDIES ON THE WATER SOLUBILIZATION
PROCESSES OF OENOTANNINS AND THEIR
PHYSICO-CHEMICAL PROPERTIES
Gh. Duca, T. Lupaşcu, P. Vlad, V. Kulciţki, R. Nastas
(downloads: 413)
10. ORGANOCHLORINE PESTICIDES RESIDUES IN
SOIL OF SOROCA DISTRICT, REPUBLIC OF
MOLDOVA
Elena Culighin
(downloads: 384)
THE MIXTURES OF 2.4-DINITROPHENYLHIDRAZONES OF INFERIOR CARBONYL COMPOUNDS AND THEIR HPLC SEPARATION WITH GRADIENT BINARY MIXTURES PHASES
Author(s):
Field: Analytical chemistry
Type: Research paper
Issue: 2008 Volume 3, no.1
Pages: 52-55
Gheorghe Zgherea
Field: Analytical chemistry
Type: Research paper
Issue: 2008 Volume 3, no.1
Pages: 52-55
acetic aldehyde, diacetyl, 2.4-dinitrophenylhidrazone, reverse phase, low polarity, gradient of mobile phase.
Full Text (PDF): Download
DOI: dx.doi.org/10.19261/cjm.2008.03(1).02
Graphical Abstract: Mixtures of small quantities of carbonyl compounds are presents in foods, concerning sensorial qualities. The inferior carbonyl compounds (C2-C4, boiling point <100°C) – mono and dicarbonyl – can be identified and measured their concentrations, after a separation by distillation on the water bath. They are transferred in a strongly acid solution of 2.4-dinitrophenylhidrazine (2.4-DNPH), generating a mixture of insoluble 2.4-dinitrophenylhidrazones (2.4-DNPH-ones). The 2.4-DNPH-ones are organic compounds with weak polarity, solids, crystallized, yellows and water insoluble, soluble in organic solvents. The mixture of 2.4dinitrophenylhidrazones may be separated by liquid chromatography, using the reverse phase mechanism [1-3]. This paper contains experimental and theoretical considerations to the means of separation through liquid chromatography of two synthetically and a natural mixtures that contain 2.4-DNPH-ones provided by inferior carbonyl compounds; to obtain conclude results, in the synthetically mixtures was introduce and 2.4-DNPH-ones provided by carbonyl compounds having three (acetone and propanal) and four (isobutyl aldehyde) atoms of carbon.
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