| Título: | Presence of chromium VI in sheepskins: influence of tannery processes (1999) |
| Autores: | FONT, J., Autor ; CUADROS, R. Ma., Autor ; LALUEZA, J., Autor ; MARSAL, A., Autor ; REYES, Ma. R., Autor ; COSTA-LOPÉZ, J., Autor ; ORÚS, C., Autor |
| Tipo de documento: | Article : texto impreso |
| Dentro : | JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS AND CHEMISTS (VOL 83NRO 2, mar-abr.1999) |
| Artículo en la página: | pp. 91-95 |
| Langues: | Inglés |
| Clasificación: | |
| Resumen: |
In this work the results of a preliminary study on the influence exerted by neutralization, washing, ageing and vegetable retanning on chromium VI content in sheepskins are presented. In neutrlization, the presence of chromium VI in skins is observed, in a concentration that depends on the pH to which they have been neutralized. However, Cr VI practically disappears once the skins have been fatliquored and thoroughly washed. Analysis of skins not retanned and finished exposed to UV light showed a marked increase in Cr VI content. By contrast, skins retanned with quebracho withstood the same conditions without noticeable quantities of Cr VI being detected.
Although the analytical results wete obtained using the IUC 18 Standard, an alternative procedure based on the capillary electrophoresis technique was developed to verify the results. This method allowed us to confirm the presence of considerable quantities of Cr VI in samples subjected to photoageing. |
