Implicit characteristic parameter of a programmed temperature retention index database

In a programmed temperature retention index (PTRI) database, there exists a characteristic parameter rt0/β that can be calculated if the experimental parameters are clearly given. This characteristic parameter can be used to flexibly reproduce the original PTRI data under chromatographic conditions different from those originally given. As this characteristic parameter is not explicitly given, it is suggested to name this parameter as the implicit characteristic parameter (TCP) of a PTRI database. The ICP in White's PTRI database was easily found and used satisfactorily to reproduce PTRI of some test compounds using either a Hewlett-Packard ultra-performance OV-1 column or a self-coated OV-1 column. The reproduction of PTRI could not be realized on columns of different materials. The fact that several PTRI databases measured on glass capillary columns could not satisfactorily be reproduced on fused silica column is explained.     

程序升温保留指数库的隐函特征参数

为了在不同的色谱条件下重现程序升温保留指数(PTRI),定义rt_O/β为重现程序升温保留指数的特征参数,其中r,t_O,β分别为程序升温速率,起始柱温下的死时间和相比.此特征参数文献中均未给出.求出White等编制的数据库的隐含的特征参数为0.042℃,并采用不同于原数据库所采用的色谱条件但保持其隐含特征值不变的办法,在HP公司和自制的OV-1柱上对重现这个数据库获得了满意的结果.对在玻璃毛细管柱上测定的程序升温保留指数库难以在弹性石英柱上很好地重现的原因进行了解释.