Monatshefte für Chemie - Chemical Monthly

, Volume 140, Issue 3, pp 325–328 | Cite as

Determination of extractable chromium from leather

Original Paper

Abstract

People are exposed to chromium ions from leather materials due to everyday contact with different textile objects. The problem is that Cr(VI) is extremely toxic and may cause contact allergic dermatitis on the skin and may also be a trigger for many diseases. Huge amounts of chromium ions are released by waste waters to rivers after chromium-tanning processes in the leather industry; the presence of chromium is not only a problem for human health, but also for the environment. For this reason it is extremely important to monitor the presence of chromium as Cr(VI) and as total chromium. This study aims to present an appropriate analytical method for monitoring Cr(VI) and the total chromium present on leather materials. Applying this method to chromium-tanned leather samples, it was observed that the amounts of total chromium as well as of Cr(VI) are higher than prescribed and recommended by different regulations. Chromium(VI) exceeded the limit of 3 mg/kg in the majority of tested materials, while the total chromium exceeded the limit of 50 mg/kg in all tested samples. For this reason, it is recommended to avoid direct and prolonged contact of those materials with the skin.

Graphical abstract

Keywords

Spectroscopy UV/VIS spectroscopy Metal complexes Tanned leather Chromium 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Laboratory of Analytical Chemistry, Department of Applied Chemistry, Faculty of Textile TechnologyUniversity of ZagrebZagrebCroatia
  2. 2.Faculty of Chemistry, Department of ChemistryUniversity of ViennaViennaAustria

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