Abstract
A convenient method for the determination of biogenic amines and their metabolites in small samples of brain tissue weighing from 0.5 to 5 mg, based on reverse-phase chromatography, is described. The biogenic amines, norepinephrine, dopamine, and serotonin, and the metabolites normetanephrine and 3-methoxytyramine were separated by ion-pair chromatography on a μBondapak phenyl column with an aqueous eluant, while the metabolites 3,4-dihydroxyphenylacetic acid, homovanillic acid, 3-methoxy-4-hydroxyphenylglycol, and 5-hydroxyindoleacetic acid were separated on a μBondapak C18 column with a methanol aqueous mobile phase. The sensitivity of the method is in the picogram range, from 20 to 100 pg, depending on the substances analyzed.
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