Abstract
The results of an evaluation of the use of atomic absorption spectrometry with carbon furnace atomisation to analyse the copper content of individual protein fractions separated by electrophoresis is reported. Albumin copper levels in patients with rheumatoid arthritis were found to be about 1 to 2% of the total serum copper. Both albumin and α 2 levels are affected by contamination from residual copper present on the strip. An investigation of this contamination indicated very low blank copper levels in the areas of the strip containing α 1 and β proteins. These results, and the results of analysis of copper in the ultrafiltrate from the same serum samples, are combined to define the copper distribution in a group of patients with rheumatoid arthritis. The determinations that can most readily be carried out by this technique are discussed.
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