Relative retention value of some organic compounds

The experimental results in the preceeding report indicated that, using as a support celite-545, and using as the liquid in the stationary phase 20% or more by weight of paraffin in the case of a paraffin column, and 10% or more by weight of polyethylene glycol in the case of a polyethylene glycol colum, a definite relative retention value could be observed for each substance used. Based on this result, the present study was carried out by preparing a paraffin column, a dinonylphthalate column, and a polyethylene-glycol column, using celite-545 as a support with 33% liquid in the solid phase; and the relative retention values of 60 kinds of substances were determined. These were then compared with known data in the literature. The relative retention values determined by the authors showed good agreement with the data of A. T. James and E. R. Adlard. Also, the dinonylphthalate column data agreed with the data of G. T. Pierotti, but there was no agreement with those of T. H. Purnell and D. W. Grant. These results indicated that the experimental conditions employed by the authors, were similar to those of A. T. James, E. R. Adlard, and G. T. Pierotti; but different from those of T. H. Purnell and D. W. Grant in some respect which was unnoticed. It can be concluded that more and more data of relative retention values should be published so that their comparisons can be made.