An online focusing method,based on field-enhanced sample injection coupled with transient moving substitution boundary,was developed for the separation and capillary electrophoresis(CE)-amperometric detection(AD) of biogenic amines under acidic conditions for the first time.The proposed method was based on the substitution reaction between 18-crown-6-bonded biogenic amine complexes and Na~+ cations at the substitution boundary.By using this method,electrode fouling was prevented in electrochemical detection...
【基金】
仪器设备开发专项项目(国家级)(2011YQ150072)
【更新日期】
2016-03-17
【分类号】
O652
【正文快照】
0 IntroductionBiogenic amines(BAs)are low-molecular-weight organic bases,formed by the enzy-maticdecarboxylation of amino acids or by the amination and transamination of aldehydesand ketones in living organisms。].They have powerful physiological effects
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