死时间t_d是一个重要的色谱参数,其准确值常常难以直接测定,于是研究出许多计算死时间的数学方法,其中以ε-外推法当外推步数越多求得的t_d值越准确。但这种方法计算费时,为此本文编制ε-外推BASIC浯言程序,在计算机上求取色谱死时间。这种方法迅速、准确。 The dead time t_d is an important chromatographic parameter whose accurate value is often difficult to measure directly. Therefore, many mathematical methods to calculate the dead time have been developed. The more precise the t_d value is obtained when the extrapolation step is ε-extrapolation . However, this method is computationally time-consuming, this article prepared ε-extrapolated BASIC language program, the computer to find the chromatographic dead time. This method is rapid and accurate.