- Type of paper
: Paper in journal
Title: Anodic Sampling of Different Alloys
- Authors:
- Ivanković, Vesna
- Medanić, Zrnka (69490)
- Turina, Srećko (71745)
Journal: Mat.-wiss. u Werkstofftech
Number: 5
ISSN: 0933-5137
Volume: 4
Year: 1993
Pages: from 195 to 198
Number of references: 6
Language: engleski
Summary: This research work was carried out to find then
optimumconditions for anodic sampling of steels, aluminium alloys,
brassetc. It was found using electrolyte: the water solution ofammon-nitrat
(1 g/L) and hydrochloric acid (conc.) in volumeratio 1:1, give the best
results if the duration ofelectrochemical process was 45 s and D.C. current
was 4.4 V.
The elements which are sampled were detected by thiun layerchromatography
and optical emission spectrometry.
Keywords: anodic sampling, thin layer chromatography, optical emission spectrometry
- Type of paper
: Paper in journal
Title: Determination of Magnesium by Thin-Layer Chromatography
- Authors:
- Ivanković, Vesna
- Medanić, Zrnka (69490)
- Turina, Srećko (71745)
Journal: Kemija u Industriji
Number: 7
ISSN: 0022-9830
Volume: 42
Year: 1993
Pages: from 239 to 242
Number of references: 4
Language: hrvatski
Summary: The method of magnesium determination by means of
thequantitative thin layer chromatography is presented. It is proventhat
there exists a linear dependence of spot intensity ofmagnesium, visualized
by spraying an 8-hydroxy-quinoline solution, on the mass of magnesium the
spot within the magnesium massconcentration range between 0.05 and 0.5 g/L
of magnesium.Magnesium is successfully separated from other
interferingconstituents Al, Cu and Co if the mass concentrations of
theseconstituents were under 0.5 g/L by using a developing mixture
ofBuOH+EtOH+MetOH+conc. HCl in volume proportions 50:30:10:10. Thelower
limit of mass concentrations which was measured was 0.05g/L of Mg, but the
detection limit is 0.1 g/L.
Keywords: quantitative thin layer chromatography, magnesium, 8-hydroxy-quinoline
- Type of paper
: Paper in journal
Title: Quantitative Determination of Mg in Al-Alloys by
Ion-Exchange TLC
- Authors:
- Ivanković, Vesna
- Kaštelan-Macan, Marija
- Petrović, Mira
- Turina, Srećko (71745)
- Benčić, Zvonko
Journal: Journal of Liquid Chromatography
Number: 12
Volume: 16
Year: 1993
Pages: from 2673 to 2684
Number of references: 5
Language: engleski
Summary: Analytical procedure for the quantitative determination of
MG inAl-alloys using ion-exchange thin layer chromatography isdescribed.
Chromatographic plates were coated with AmberlitIRP-69 (strong-acid cation
exchanger in H-form) mixed indifferent ratios with microcristalline
cellulose. Solutions ofHCl and HNO3 respectively, in the concentration
range from0.5-2.0 mol dm-3 were used as developers. Chromatograms
werevisualized by spraying with ethanolic solution of8-hydroxyguinoline and
spots were scanned using Camag TurnerFluorometer 111. The optimal
separation was obtained on TLCplates containig 23% of ion-exchanger
(particle size < 60 um) andby eluting with 1.25 M HCl. Rf (Al)=0.12,
Rf(Mg)=0.41.
Keywords: ion-exchanger,chromatographic plates, microcristalline cellulose
- Type of paper
: Paper in journal
Title: Contribution to Investigation of Nonhomogeneity of
Materials with Al-Mg Alloys
- Authors:
- Rumenjak, Romano
- Uršić, Ivica
- Turina, Srećko (71745)
Journal: Strojarstvo
Number: 6
ISSN: 0562-1887
Volume: 34
Year: 1992
Pages: from 247 to 249
Number of references: 6
Language: hrvatski
Summary: Investigations were carried out to fined the degree of
materialhomogeneity of special made reference specimens in relation tothe
magnesium contents, microhardness and electropotencial. Itwas found that
the material of etalons is of high degree ofhomogeneity in relation to
magnesium contents, microhardness andelectropotencial.
Keywords: Al-Mg alloys, atomic absorption spectrometry, electropotential, homogeneity of materials, microhardness, optical emission spectroscopy, X-ray fluorescence
- Type of paper
: Paper in journal
Title: Determination of Al and Mg by means of Thin Layer
Chromatography Using Frontal Detection
- Authors:
- Štefanac, Zdravka
- Medanić, Zrnka (69490)
- Turina, Srećko (71745)
Journal: Kemija u Industriji
Number: 1
ISSN: 0022-9830
Volume: 40
Year: 1991
Pages: from 1 to 4
Number of references: 6
Language: hrvatski
Summary: The possibility of frontal detection application was
examined formagnesium and aluminium determination . As the reagents were
usedsalicylidene-o- aminophenol and salicylidenasine.
As the results show, the method of frontal detection can givesatisfactory
results for the aluminium alloys classification.
Keywords: frontal detection, thin layer chromatography, magnesium,aluminium
- Type of paper
: Paper in journal
Title: Determining of Carbon Content in the Steels by Means of
Optical-emission -spectrometric (OES) Methodes
- Authors:
- Turina, Srećko (71745)
- Rumenjak, Romano
- Stupnišek, Mladen
Journal: Strojarstvo
Number: 4
ISSN: 0562-1887
Volume: 35
Year: 1993
Pages: from 165 to 168
Number of references: 4
Language: hrvatski
- Type of paper
: Paper in proceedings
Title: Simulation of metallic inclusion distribution in
free-cutting Al-alloys
- Authors:
- Pinjuh, Željka
- Jakovljević, Marinko
- Ćorić, Danko
- Editors
- Božičević, Juraj
Proceedings title: Od uzoraka do podataka i informacija
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 0 to 0
Meeting: Od uzoraka do podataka i informacije
Held: from 10/20/93 to 10/23/93
- Type of paper
: Paper in proceedings
Title: Possibilities of data processing and graphic presentation
of some Al-alloys composition obtained from several independent
laboratories
- Authors:
- Ivanković, Vesna
- Turina, Srećko (71745)
- Editors
- Božičević, Juraj
Proceedings title: Od uzoraka do podataka i informacija
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 58 to 61
Meeting: Od uzoraka do podataka i informacije
Held: from 10/20/93 to 10/23/93
- Type of paper
: Paper in proceedings
Title: Advantage of The Local Analysis - Compared to The Bulk
Analysis in Industrial Engineering
- Authors:
- Rumenjak, Romano
- Turina, Srećko (71745)
- Đuretak, Ivica
- Editors
- Cebalo, Roko
Proceedings title: Suvremeni trendovi proizvodnog strojarstva
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 73 to 81
Meeting: Suvremeni trendovi proizvodnog strojarstva
Held: from 05/12/92 to 05/15/92
- Type of paper
: Paper in proceedings
Title: Possibilite measuring point electropotential from the
surface
- Authors:
- Rumenjak, Romano
- Turina, Srećko (71745)
- Juraga, Ivan
- Editors
- Esih, Ivan
Proceedings title: 10 Savjetovanje o zaštiti materijala i industrijskog finiša
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 95 to 99
Meeting: 10 Savjetovanje o zaštiti materijala i industrijskog finiša
Held: from 06/18/92 to 06/19/92
- Type of paper
: Summary in proceedings
Title: Possibilities of Various Sampling of the Metals
- Authors:
- Kovačiček, Franjo
- Medanić, Zrnka (69490)
- Turina, Srećko (71745)
- Editors
- Durrigl, Antun
Proceedings title: New Achievements in Chromatography
Language: engleski
Place: Zagreb
Year: 1992
Pages: from 1 to 2
Meeting: New Achievements in Chromatography
Held: from 10/13/92 to 10/15/92
Summary: According to the used analytical methods it is possible to
chosethe sampling. For the classical analytical methods is used tobore to
take the sample and the material is demaged. Usingthe spectrographic
methods the material is demaged to, and thequestion is the accuracy of
analysis. Only the anodic samplinggive the neglected demage of material,
and the amounts of sampleis satisfactory for thin layer chromatography
analysis.
- Type of paper
: Summary in proceedings
Title: Determination of Aluminium by Quatitative Thin Layer
Chrpomatography in Water Solution with Proceeding the Coprecipitation
- Authors:
- Medić-Šarić, Marija
- Jezičić, Branka
- Turina, Srećko (71745)
- Editors
- Durrigl, Antun
Proceedings title: New Achievements in Chromtography
Language: engleski
Place: Zagreb
Year: 1992
Pages: from 2 to 3
Meeting: New Achievements in Chromatography
Held: from 10/13/92 to 10/15/92
- Type of paper
: Summary in proceedings
Title: Iteraction of Cu (II)-ions and HI Molecules in TLC
- Authors:
- Vranković, Višnja (67021)
- Turina, Srećko (71745)
- Editors
- Durrigl, Antun
Proceedings title: New Achievements in Chromatography
Language: engleski
Place: Zagreb
Year: 1992
Pages: from 3 to 4
Meeting: New Achievements in Chromtography
Held: from 10/13/92 to 10/15/92
- Type of paper
: Summary in proceedings
Title: Determination of Cr, Ni, Mn in the Steels by Means of TLC
with Anodic Sampling
- Authors:
- Ivanković, Vesna
- Turina, Srećko (71745)
- Editors
- Durrigl, Antun
Proceedings title: New Achievements in Chromatography
Language: engleski
Place: Zagreb
Year: 1992
Pages: from 8 to 9
Meeting: New Achievements in Chromatography
Held: from 10/13/92 to 10/15/92
- Type of paper
: Summary in proceedings
Title: Determination of Co in Hard Metals by Means of TLC and
Anodic Sampling
- Authors:
- Ivanković, Vesna
- Editors
- Tripalo, Branko
Proceedings title: XIII.Skup Hrvatskih Kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 231 to 232
Meeting: XIII. Skup Hrvatskih Kemičara
Held: from 02/08/92 to 02/10/92
- Type of paper
: Summary in proceedings
Title: Quantitative determination of Mg in Al-alloys
- Authors:
- Ivanković, Vesna
- Kaštelan-Macan, Marija
- Petrović, Mira
- Editors
- Tripalo, Branko
Proceedings title: XIII. Skup Hrvatskih Kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 218 to 219
Meeting: XIII. Skup Hrvatskih Kemičara
Held: from 02/08/93 to 02/10/93
- Type of paper
: Summary in proceedings
Title: Determination of Non-Homogenity of the Steel-Sheet Surface
by Means of Spectrometric Methods
- Authors:
- Ivanković, Vesna
- Schubert, Gerhard
- Editors
- Veber, Marijan
Proceedings title: Spectroscopy in Theory and Practice
Language: engleski
Place: Bled, Slovenija
Year: 1993
Pages: from 74 to 75
Meeting: 8. Symposium "Spectroscopy in Theory and Practice"
Held: from 04/20/93 to 04/23/93
- Type of paper
: Summary in proceedings
Title: Possibilities of data processing and graphic presentation
of some Al-alloys composition obtained from several independent
laboratories
- Authors:
- Ivanković, Vesna
- Pinjuh, Željka
- Jarić, Marija
- Editors
- Benčić, Zvonko
Proceedings title: Od uzoraka do podataka i informacije
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 88 to 89
Meeting: Od uzoraka do podataka i informacije
Held: from 10/20/93 to 10/23/93
- Type of paper
: Summary in proceedings
Title: Simulation of metalic inclusion distribution in
free-cutting Al-alloys
- Authors:
- Ivanković, Vesna
- Pinjuh, Željka
- Jakovljević, Marinko
- Editors
- Benčić, Zvonko
Proceedings title: Od uzoraka do podataka i informacije
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 98 to 99
Meeting: Od uzoraka do podataka i informacije
Held: from 10/20/93 to 10/23/93
- Type of paper
: Summary in proceedings
Title: Chromatographic Characterization of Al-Mg alloys
- Authors:
- Kaštelan-Macan, Marija
- Turina, Srećko (71745)
- Petrović, Mira
Proceedings title: 12th International Symposium on Microchemical Techniques
Language: engleski
Place: Cordoba, Spaina
Year: 1992
Pages: from 231 to 232
Meeting: 12th International Symposium on Microchemical Techniques
Held: from 09/06/92 to 09/11/92
- Type of paper
: Summary in proceedings
Title: THE POSSIBILITY OF USING THE MONTE CARLO METHOD FOR
SUBSTANCES QUANTIFICATION IN TLC SPOTS
- Authors:
- Turina, Srećko (71745)
- Ivanković, Vesna
- Editors
- Marsel, Jože
Proceedings title: CHROMATOGRAPHIC TECHNIQUES
Language: engleski
Place: Bled, Slovenija
Year: 1994
Pages: from 149 to 149
Meeting: International Symposium on Chromatographic Techniques
Held: from 10/10/94 to 10/13/94
- Type of paper
: Summary in proceedings
Title: CLASSIFICATION OF STEELS BASED ON CONTENT OF Ni ESTIMATED
BY TLC ANODIC SAMPLING
- Authors:
- Ivanković, Vesna
- Turina, Srećko (71745)
- Editors
- Marsel, Jože
Proceedings title: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Language: engleski
Place: Bled, Slovenija
Year: 1994
Pages: from 150 to 150
Meeting: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Held: from 10/10/94 to 10/13/94
- Type of paper
: Summary in proceedings
Title: INTERACTION OF Cu(ii) AND HI- THE THIN LAYER
CHROMATOGRAPHY
- Authors:
- Vranković, Višnja (67021)
- Ivanković, Vesna
- Turina, Srećko (71745)
- Editors
- Marsel, Jože
Proceedings title: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Language: engleski
Place: Bled, Slovenija
Year: 1994
Pages: from 151 to 151
Meeting: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Held: from 10/10/94 to 10/13/94
- Type of paper
: Summary in proceedings
Title: COMPARISON OF TWO QTLC METHODS
- Authors:
- Turina, Srećko (71745)
- ZORKO, NATAŠA
- Editors
- Marsel, Jože
Proceedings title: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Language: engleski
Place: Bled, Slovenija
Year: 1994
Pages: from 152 to 152
Meeting: INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHIC TECHNIQUES
Held: from 10/10/94 to 10/13/94
- Type of paper
: Summary in proceedings
Title: THE POSSIBILITY OF QUANTIFICATION OF INGREDIENTS IN THE
THIN LAYER CHROMATOGRAPHY SPOTS
- Authors:
- Ivanković, Vesna
- Turina, Srećko (71745)
- MARIJAN, NATAŠA
- Editors
- Traitler, H.
Proceedings title: 8TH INTERNATIONAL SYMPOSIUM ON INSTRUMENTAL PLANAR CHROMATOGRAPHY
Language: engleski
Place: INTELAKEN, SWITZERLAND
Year: 1995
Pages: from G10 to G11
Meeting: 8th International Symposium on Instrumental Planar Chromatography
Held: from 04/05/95 to 04/07/95
- Type of paper
: Ph.D.
Title: INTERACTION OF CU(II) AND HI IN THIN-LAYER CHROMATOGRAPHY
- Authors:
- Rumenjak, Romano
- Đuretak, Ivica
- Turina, Srećko (71745)
Faculty: PRIRODOSLOVNO MATEMATIČKI SVEUČILIŠTE U ZAGREBU
Author: VRANKOVIĆ VIŠNJA
Date of defense: 12/10/94
Language: hrvatski
Number of pages: 57
Summary: A specific interaction of copper(II) ion with hydrogen
iodide taking place in the mobile phase (an acidified water/ButOH mixure)
during the thin-layer chromatographic process was studied with the aim of
formulating a TLC analytic method with enhanced specificity for Cu(II).
A slip-chromatographic method for efficient separation of Cu(II) from other
ions having similar Rf values was formulated and successfully applied for
differentiang copper-containing Al alloys used for machine bearings from
the copper-free ones.
Keywords: copper,hydrogen iodide,slip chromatography,thin-layer chromatography