Capillary GC Columns and Guard Columns/ Retention Gaps 2 How to Choose a Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Columns by Phase Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ionic Liquid Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 MS-Grade Columns . . . . . ...

Table 1, which also includes relative molecular mass data obtained from sequencing the solutes. It is seen that fairly accurate values for relative molecular mass can be obtained for the larger molecules, which can be extremely useful when dealing with completely unknown biopolymers. The errors involved are signiRcantly greater for the materials of smaller relative molecular mass because the re...

Review