Brunner LJ, DiPiro JT, Feldman S. Serum antipyrine concentrations determined by micellar electrokinetic capillary chromatography.
JOURNAL OF CHROMATOGRAPHY 1993;
622:98-102. [PMID:
8120120 DOI:
10.1016/0378-4347(93)80255-3]
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Abstract
We developed an assay for antipyrine in serum using micellar electrokinetic capillary chromatography. A capillary electrophoresis system with a 70-cm fused-silica capillary and pH 8.2 borate-sodium dodecyl sulfate buffer was used. Standard curves ranging from 0.5 microgram/ml to 25 micrograms/ml were analyzed. The resulting electropherograms showed no interfering endogenous peaks and the assay was linear in the range of concentrations analyzed. The intra-day and inter-day relative standard deviations ranged from 0.7 to 5.2% and 1.7 to 8.1%, respectively. Analytical recovery of antipyrine ranged from 78.2 to 105.0%. The theoretical plate number for antipyrine was calculated to be 561,000 +/- 79,000 plates/m.
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