Detection of rosin (colophony) components in technical products using an HPLC technique

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E Ehrin, A T Karlberg

Abstract

A method for detection of rosin (colophony) in technical products has been developed. The technique, using HPLC, is based on the analysis of abietic acid and dehydroabietic acid, major components of rosin. In the procedure described in this paper, the limit of detection was 0.001% for abietic acid and 0.015% for dehydroabietic acid. An average recovery of 88.9% for abietic acid and 88.2% for dehydroabietic acid was obtained. The lowest detectable amount of abietic acid (0.001%) corresponds to a content of 0.003% unmodified rosin in the product, assuming that the resin acid content in rosin is 90%, of which 30-50% is abietic acid. This is an acceptable limit compared to the reactivity in patients with known allergy to rosin. Technical products for analysis were supplied by different Swedish manufacturers, who also gave the approximate content of rosin in the various products. The content of rosin determined in the products was in accordance with the contents given by the manufacturers.

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Citations

May 1, 1993·American Journal of Industrial Medicine·B MedingK Wass
Jan 13, 1998·American Industrial Hygiene Association Journal·P A SmithK Still
Feb 1, 1992·The British Journal of Dermatology·A T Karlberg, C Lidén
May 10, 2002·Contact Dermatitis·Jeanne Duus JohansenTorkil Menné
Apr 1, 1997·Contact Dermatitis·C HanssonO Sterner
Oct 1, 1996·Contact Dermatitis·A T Karlberg, E Gäfvert
Aug 1, 1994·Contact Dermatitis·K Thörneby-Andersson, C Hansson
Aug 30, 2011·Journal of Environmental Monitoring : JEM·Sara AxelssonUlrika Nilsson
Oct 1, 1992·Contact Dermatitis·A T KarlbergC Lidén
Nov 1, 1994·Contact Dermatitis·M BerghA T Karlberg
Apr 1, 1993·Contact Dermatitis·L P ShaoJ L Nilsson
Mar 1, 1995·Contact Dermatitis·D KohC L Goh
Apr 1, 1992·Contact Dermatitis·C Lidén, A T Karlberg
Mar 1, 1996·Contact Dermatitis·A T Karlberg, K Magnusson
Jul 31, 2008·Journal of Separation Science·Ulrika NilssonAnn-Therese Karlberg
Jul 18, 2020·Contact Dermatitis·Ulrik Ahrensbøll-FriisJeanne D Johansen
Jul 23, 2021·Contact Dermatitis·Ann-Therese KarlbergUlrika Nilsson

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