Cr(VI) formation in double-face sheepskins: Effect of chromium level and ironing temperature

Küçük Resim Yok

Tarih

2007

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Soc Leather Technol Chemists

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

This study examines the relationship of Cr(VI) formation in leather and wool fibres to the level of Cr and the ironing temperature in double-face processing. The chromium oxide levels in both the leather and wool fibres of the skins were measured. An increase in the amount of basic chromium sulphate used was shown to increase the chromium content in both leather and wool fibres. Related to this increase, parallel increases in the amount of Cr(VI) in leather and wool fibres were detected by the analysis method - DIN 53314 (IUC 18: 1997). Furthermore, higher temperatures during the ironing processes produced higher levels of Cr(VI) in leather and wool fibres. To eliminate any false-positive results due to the interference of dyestuffs in the Cr(VI) determination with dark coloured extracts, Br-2/water solutions were added to extract solutions and the measurements were repeated in the transparent extracts. A comparison of the results revealed that in the extracts with Br,/water addition, Cr(VI) values were lower and it was concluded that Br,/water solution eliminated the dyestuff interference and, therefore the false-positive results.

Açıklama

Anahtar Kelimeler

Kaynak

Journal of the Society of Leather Technologists and Chemists

WoS Q Değeri

Q3

Scopus Q Değeri

Q3

Cilt

91

Sayı

1

Künye