A zero dead volume microinjector,a constant pressure separation system and a flow splitter for gradient elution are designed,which are effective for solving the existing main problems of CEC.

• 设计了一种包括具有极小死体积的进样器、恒压分离系统和适于梯度洗脱的分流器的流路结构,可有效地解决CEC现存的主要问题。