旋转激光扫描共焦荧光检测式毛细管阵列电泳

Capillary Array Electrophoresis with Confocal Fluorescence Rotary Scanner

研制了一种新型毛细管阵列电泳仪———旋转激光扫描共焦荧光检测式毛细管阵列电泳。采用圆形毛细管阵列 ,激光扫描共聚焦荧光检测方式 ,利用了高速直流电机旋转反射镜来进行激光扫描 ,并且加快了采样速率 ;采用旋转编码器获得毛细管的绝对位置并对数据采集系统触发来采集信号 ,并利用研制的 8通道毛细管阵列电泳对酪氨酸、赖氨酸、谷氨酸及天冬氨酸的混合物进行了分离分析 ,获得了良好的分离效果。

A capillary array electrophoresis system with rotary corifocal fluorescence scanner was reported. High speed direct current rotary motor combined with a rotary encoder and the reflection mirror has been designed to direct exactly the excitation laser beam. to the array of capillaries, which are symmetrically distributed around the motor. The rotary encoder is introduced to accurately orient the position of each capillary and its output signal triggers the data acquiring system to record. the fluorescence signal corresponding to each capillary. Separations of several amino acids are demonstrated by eight-channel capillary array electrophoresis built by ourselves.