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设计了一种喷壁式毛细管电泳安培检测装置 .用原儿茶醛和原儿茶酚作为模型化合物考察了分离电压、电极与毛细管出口之间的距离对噪音和电极响应的影响 ,研究了清洗步骤对测定结果重视性的影响 .对该检测器的性能进行了测试 ,其分离效率可达 1.2× 10 5(原儿茶醛 )和1.1× 10 5(原儿茶酚 ) ,原儿茶醛和原儿茶酚检测限分别为 0 .2 5和 0 .50 μg/mL .
A capillary wall capillary electrophoresis amperometric detection device was designed.Using protocatechuic aldehyde and protocatechol as model compounds, the effects of separation voltage, distance between electrode and capillary exit on noise and electrode response were investigated, Step on the determination of the results of the importance of performance of the detector was tested, the separation efficiency of up to 1.2 × 105 (protocatechuic aldehyde) and 1.1 × 105 (protocatechol), Protocatechuic aldehyde And the original detection limit of catechins were 0.25 and 0.50 μg / mL, respectively.