| Titre : |
Analysis of Al2O3 in solutions and leathers. Part 3 : Spectrophotometric method for determination of Al2O3 in vegetable-aluminum tanned leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
T. Kolusheva, Auteur ; D. Vasilev, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 11-14 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Alumine
Cuirs et peaux -- Analyse
Cuirs et peaux -- Teneur en alumine
Cuirs et peaux d'agneaux
Cuirs et peaux de porcs
Solutions (chimie)
Spectrophotométrie
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Tannage végétal
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
This paper develops a method for determining Al2O3 in vegetable-aluminum and aluminum tanned leathers. The method is based on the property of Al3+ to form a red complex compound with aluminon at pH = 5, l = 520nm.
The preparation of the sample involves: ashing the sample at 700°C, melting the ash with 1.5g Na2B4O7 at 950°C and dissolving the melt with a dilute solution of HNO3. The proposed method is used to determine the content of Al2O3 in vegetable-aluminum tanned pig and lamb leathers. The results have a very good reproducibility, with relative standard deviation, Sr = 0.5-1.3%. The absence of systematic errors in the proposed procedure has been demonstrated. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Reagents
- ANALYTICAL PROCEDURE : Sample preparation - Preparation of the solution for measurement - Preparation of the series of solutions for the calibration curve and its equation A = K•CAl2O3 - Conditions for the quantitative performance of the analytical complex-formation reaction between Al3+ and aluminon ; Interfering influences of other components in the sample
- RESULTS AND DISCUSSION : Analytical characteristics -
- Table 1 : Data for the effect of interfering ions on the absorption of the complex Al3+ -aluminon - Table 2 : Statistical data for the results of the analysis of Al2O3 in three aluminium-tanned leathers |
| En ligne : |
https://drive.google.com/file/d/1c_oE-t76OQLFh0wS3djcgxaJRMe7Sc6S/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39040 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 1 (01-02/2007) . - p. 11-14
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Analysis of Al2O3 in solutions and leathers. Part 3 : Spectrophotometric method for determination of Al2O3 in vegetable-aluminum tanned leathers in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 1 (01-02/2007)
