中文摘要：

利用粒子在受限空间内随机行走的扩散理论,构建了气相色谱毛细管柱分离的仿真模型,系统地考察了各模拟参数对粒子在色谱柱内的碰撞情况和峰宽的影响。模拟结果表明随机速度和时间步长的增加以及载气流速的降低均会加剧粒子碰撞和色谱峰展宽,而相互作用虽与碰撞行为无关,但峰宽会随着相互作用的增加而显著增大。模拟结果证实了该模型与色谱基本理论的一致性。

英文摘要：

According to the diffusion theory of random walk in a confined space,a simulation model of separation in the capillary column of gas chromatography has been set up.The effect of simulation parameters on the collision and broaden the peak width has been investigated.The results show that the increase of random velocity and time interval as well as the decrease of flow rate will motivate the particle collision and the peak width.The interaction between particle and stationary is independent on the collision,and its increase will lead to a broadened peak.All the simulation results validate that our model fit well with the fundamental principle of chromatography.