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Chromium(III) and chromium(VI) release from leather during 8 months of simulated use
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.ORCID iD: 0000-0003-2145-3650
2016 (English)In: Contact Dermatitis, ISSN 0105-1873, E-ISSN 1600-0536, Vol. 75, no 2, 82-88 p.Article in journal (Refereed) Published
Abstract [en]

Background. Chromium ( Cr) release from Cr-tanned leather articles is amajor cause of Cr contact dermatitis. It has been suggested that Cr( VI) release from leather is not necessarily an intrinsic property of the leather, but is strongly dependent on environmental conditions. Objectives. To test this hypothesis for long-term ( 8 months) simulated use. Materials and methods. The release of total Cr and Cr( VI) from Cr-tanned, unfinished leather was analysed in subsequent phosphate buffer ( pH 8.0) immersions for a period of 7.5 months. The effect of combined ultraviolet treatment and alkaline solution ( pH 12.1) was tested. Dry storage [ 20% relative humidity ( RH)] was maintained between immersions. Atomic absorption spectroscopy, X-ray fluorescence and diphenylcarbazide tests were used. Results. Cr( VI) release was dependent on previous dry storage or alkaline treatment, but not on duration or number of previous immersions. Cr(III) release decreased with time. Fifty-two percent of the total Cr released during the last immersion period was Cr( VI). Cr( VI) release exceeded 9 mg/kg in all immersion periods except in the first 10-day immersion ( 2.6mg/kg). Conclusions. Cr( VI) release is primarily determined by environmental factors ( RH prior to immersion, solution pH, and antioxidant content). The RH should be kept low prior to testing Cr( VI) release from leather.

Place, publisher, year, edition, pages
Blackwell Publishing, 2016. Vol. 75, no 2, 82-88 p.
Keyword [en]
alkaline environment, allergic contact dermatitis, chemical analysis, chromium(III), chromium(VI), humidity, leather, metals, occupational
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URN: urn:nbn:se:kth:diva-192402DOI: 10.1111/cod.12581ISI: 000380901200003PubMedID: 27144948Scopus ID: 2-s2.0-84977645383OAI: oai:DiVA.org:kth-192402DiVA: diva2:970698
Note

QC 20160914

Available from: 2016-09-14 Created: 2016-09-12 Last updated: 2017-11-21Bibliographically approved

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