[article]
| Titre : |
Size-exclusion chromatography of organic acid-masked aluminum complexes and the determination of combined acid/aluminum ratio of the fractions |
| Type de document : |
texte imprimé |
| Auteurs : |
Tingyou Zhang, Auteur ; Yasuhiro Ishii, Auteur ; Kunio Shirai, Auteur ; Yasumasa Chonan, Auteur ; Eisuke Takata, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 89-94 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Four kinds of preparations of masked aluminum complexes were prepared by adding sodium citrate at 1:2, sodium tartrate at 1:2, sodium acetate at 1:4 and 3:1 equivalents to aluminum equivalent. The masked preparations were separated by size-exclusion chromatography and the fractions were analyzed for aluminum content by atomic absorption spectroscopy and for combined organic acid by ion chromatography. More than 50% of the added citrate or tartrate was taken up as an aluminum complexed component. A major proportion of polynuclear complex species combined the described acid at 0,2-0,6 equivalent ratio in the preparation. The effect of tartrate was so remarkable that it produced a considerable amount of enlarged molecular-sized complexes with tartrate content 0,6-0,8 in equivalent ratio on one hand and also produced a certain amount of small molecular-sized complexes with high tartrate contents increasing toward 1,0 in equivalent ratio on the other hand. Uptake of acetate by aluminum complex molecules was only 2,5% of the added acetate even at the addition at 3:1 equivalent ratio. However, such a high concentration of acetate broke down the size of aluminum complexes in the solution. |
| En ligne : |
https://drive.google.com/file/d/1sb13MvLfeYz78roZ4HaFVvZVbHVv2eXe/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7798 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXXI, N° 4 (04/1996) . - p. 89-94
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Ajouter le résultat dans votre panier Affiner la rechercheAnalysis of the composition of masked aluminium complexes by HPLC combined with capillary electrophoresis in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 4 (04/1994)
