Critical appraisal of analytical procedures for the determination of CR(VI) in dyed leathers by 1,5 diphenylcarbazide spectrophotometry after sample dilution or color removal

Journal of the American Leather Chemists Association

Volumn 102, Issue 3, 2007, Pages 85-92

  Scancar, J ^a   Osterman, T ^a   Bukovec, N ^b   Mllacic, R ^a  

^a JO EF STEFAN INSTITUTE   (Slovenia)

^b UNIVERSITY OF LJUBLJANA   (Slovenia)

Author keywords

[No Author keywords available]

Indexed keywords

CHROMIUM COMPOUNDS; CONCENTRATION (PROCESS); DILUTION; DYES; EXTRACTION; SPECTROPHOTOMETRY;

DECOLORIZING AGENTS; DIPHENYLCARBAZIDE SPECTROPHOTOMETRY; FLORISIL;

LEATHER;

EID: 34248549930     PISSN: 00029726     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (29)

1. Brown, E. M. and Taylor, M. M.; Essential chromium? JALCA 98, 408-414, 2003.
2. Milacic, R. and Stupar, J.; Fractionation and oxidation of chromium in tannery waste and sewage sludge amended soils. Environ. Sci. Technol. 29, 506-514, 1995.
3. Milacic, R. and Scancar, J.; Safe Disposal of Chromium-Rich Waste Materials. Crit. Rev. Anal. Chem. 33, 69-75, 2003.
4. Hauber, C.; UNIDO, US/RAS/92/120; Regional program for pollution control in the tanning industry in South-East Asia. Technical Report. Sources, Detection and avoidance of hexavalent chromium in leather and leather products. 1-13, 1999.
5. Hauber, C.; UNIDO, US/RAS/92/120; Regional program for pollution control in the tanning industry in South-East Asia. Formation, prevention and determination of Cr(VI) in leather. A short overview of recent publications. 1-7, 2000.
6. Yu, C., Liu, P., Sun, G., Duan, L. and Ren, H.; The influence of relative humidity on the level of Cr(VI) in chrome-tanned leather. JSLTC 89, 194-198, 2005.
7. Chen, H. and Shan, Z.; Influence of fat-liquoring components on Cr(VI) levels. JSLTC, 89, 257-259, 2005.
8. Deutche Norm DIN 53314; Bestimmung des ChromCVI) Gehaltes in Ledern. April 1996.
9. European Standard EN 420; General requirements for gloves. March 1994.
10. Deutche Norm DIN CEN/TS 14495; Bestimmung des Chrom(VI) Gehaltes. August 2003.
11. International Association for Research and Testing in the Field of Textile Ecology; Öko-Tex Standard 100, January 2005.
12. Regulation (EC) No 1980/200 of the European Parliament and the Council on a revised Community eco-labeled award scheme; Official Journal of the European Communities L237/1-11. August 2000.
13. Milacic, R., Scancar, J. and Urbane, M.; Is spectrophotometry a reliable technique for determination of Cr(VI) in leather samples? JSLTC 82, 91-94, 1998.
14. Varnali, T. and Amado, A.; Competing ligands in chromium complexes: A computional study. JALCA 97, 167-174, 2002.
15. Milacic, R., Stupar, J., Kozuh, N., Korosin, J. and Glazer, I.; Fractionation of Cr and determination of Cr(VI) in blue shavings. JALCA 87, 221-232, 1992.
16. Milacic, R. and Stupar, J.; Simultaneous determination of chromium(III) complexes and chromium(VI) by fast protein anion-exchange liquid chromatography - atomic absorption spectrometry. Analyst 119, 627-632, 1994.
17. Milacic, R. and Scancar, J.; Determiantion of hexavalent chromium in lime-treated sewage sludge by anion-exchange fast protein liquid chromatography with electrothermal atomic absorption spectrometry detection. Analyst 125, 1938-1942, 2000.
18. Milacic, R, Scancar, J. and Tusek, J.; Determiantion of Cr(VI) in welding fumes by anion-exchange fast protein liquid chromatography with electrothermal atomic absorption spectrophotometric detection. Anal. Bioanal. Chem. 372, 549-553, 2002.
19. Scancar, J., Milacic, R., Séby, F. and Donard, O. F. X.; Determiantion of hexavalent chromium in cement by the use of HPLC-ICP-MS, FPLC-ETAAS, spectrophotometry and selective extraction techniques. JAAS, 20, 871-875, 2005.
20. Jeevan, R. J. G., Chandrasekar, R. and Radhakrishnan, G.; A reliable detection method for Cr(VI) in dyed leathers by ion chromatography. JALCA 98, 344-350, 2003.
21. Jambunathan, S. and Dasgupta, P. K.; Determination of hexavelent chromium in leather extracts by the diphenylcarbazide (IUC-18): pitfalls and refinements. JSLTC 84, 63-73, 2000.
22. Survey of Chemical Substances in Consumer Products; Investigation of the Content of Cr(VI) and Cr(III) in Leather Products on the Danish Market. Danish Environmental Protection Agency 3:1-20, 2000.
23. IUC-18 standard of IULTSC; JSLTC 79, 57-59, 1995.
24. IUC-18 Determination of Cr(VI) content; JSLTC 81, 109-114, 1997.
25. IUC-18 standard of IULTSC; JSLTC 86, 283-288, 2002.
26. http://www.leathermag.com/story.asp?sc=33352&ac=9966648 Leather International News: Europe Changes to chrome VI tests methods, 19 May 2005
27. Rius, T., Font, J., Cuadros, R., Cuadros, S., Santiago, M., Verdú, E. and Marsal, A.; (2002) Inter-laboratory study on hexavalent chromium determination in dyed skins. JALCA 97, 277-283, 2002.
28. Chaudhuri, D., Chakraborti, A. R. and Bhattacharya, P.; Further studies on the official methods of analysis for determination of hexavalent chromium level in leather. JALCA 98, 388-399, 2003.
29. Ganeshjeevan, R., Chandrasekar, R., Priya, S. S. and Radhakrishnan, G. (2004) A simple and effective method for Cr(VI) analysis in dyed leathers. JALCA 99, 12-15, 2004.