| Titre : |
Determination of soluble hexavalent chromium in dyed consumer goods improvised by a simple on-line color removal |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Ganeshjeevan, Auteur ; S. Suresh, Auteur ; Chellappa Muralidharan, Auteur ; S. Raja, Auteur ; Asit Baran Mandal, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 204-210 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuir -- Teneur en chrome hexavalent
Cuirs et peaux -- Analyse
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Hexavalent chromium detection in consumer articles is a statutory requirement and screening it in dyes and dyed leather is a challenge. Although many new improvised procedures were put forward, the lack of simplicity and automation leaves the void. The present study addresses these issues and offers a procedure that is closer to automated approach leading to finding that without the requirement of any special device the regular liquid chromatographic instrument can support a quick, simple and efficient method for hexavalent chromium detection in strongly colored leathers. The method was found to be effective in the removal of wide range of dyes and serving the detection of hexavalent chromium in ppb levels with %RSD of max. 3.5. |
| Note de contenu : |
- EXPERIMENTAL : Instrumentation - Chemicals and reagents - Standards preparation - Ion chromatographic conditions - Preparation of post-column reagent - Preparation of guard column - Preparation of buffer for sample extraction - Preparation of samples - Procedure for analyzing samples
- RESULTS AND DISCUSSION : Different grades of florisil and their impact on chrome speciation and dye removal - The efficiency of color removal by florisil - Tolerance level of dyes for florisil guard - Recovery of hexavalent chromium - Choice of flow rate of mobile phase - Validation of method - Analysis of real samples |
| En ligne : |
https://drive.google.com/file/d/1OCOyV1lLYRy4dibcAmwiNza9i-t3Z3pD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24370 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 7 (07/2015) . - p. 204-210
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