Determination of catecholamines in urine and plasma by on-line sample pretreatment using an internal surface boronic acid gel

Tomoyoshi Soga, Yoshinori Inoue

研究成果: Article査読

28 被引用数 (Scopus)

抄録

An automated method of analysis of catecholamines using a new packing material, internal surface boronic acid gel, was developed. The new support is designed with a carboxymethylcellulose-bonded external surface in order to be non-adsorptive to proteins and with a phenylboronic acid-bonded internal surface to retain only catecholamines. This packing support displayed an affinity for basic or neutral catecholic compounds with no protein adsorption and enabled on-line sample pretreatment of catecholamines in urine and deproteinized plasma. The catecholamines were selectively adsorbed on the new material and separated on a reversed-phase or a cation-exchange column. These compounds were then detected electrochemically. The limits of quantitation were 1.5-3.0 ng/ml in urine and 10-15 pg/ml in plasma, at a signal-to-noise ratio of 5.

本文言語English
ページ(範囲)175-181
ページ数7
ジャーナルJournal of Chromatography B: Biomedical Sciences and Applications
620
2
DOI
出版ステータスPublished - 1993 10 29
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)

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