10 May / June 2019 Table 1: Thirty NTGA compounds with the respective structures. These compounds include a variety of oxygenates and other compounds that may be found in gasoline.


Table 2: Relative response factors (RRF) and standard non-polar retention indices (RI) used for each NTGA. Compound Acetone


Dimethoxymethane Methyl acetate 2-Butanone


2-Methylfuran


Dimethyl carbonate Ethyl acetate


2-Methyltetrahydrofuran 2-Pentanone 2-Pentanol


2,5-Dimethylfuran


4-Methyl-2-Pentanone 2-Methyl-1-butanol sec-Butyl acetate Cyclopentanone


Relative Response Factor (RRF)


0.680 0.980 0.900 0.740 0.380 1.050 1.050 0.950 0.740 0.830 0.390 0.670 0.875 0.900 0.800


Retention Index (RI)


471 508 511 575 594 563 600 669 667 687 697 722 723 745 764


Compound


Isobutyl acetate 3-Hexanone


Diethyl carbonate


2,4-Dimethyl-3-pentanone Ethyl butanoate n-Butyl acetate


Methyl pentanoate Ethyl pentanoate Anisole


Isobutyl isobutyrate Gamma-valerolactone Aniline


Methyl levulinate Ethyl levulinate N-Methylaniline


Relative Response Factor (RRF)


0.850 0.805 0.950 0.790 0.850 0.850 0.830 0.875 0.285 0.840 0.940 0.250 0.825 0.805 0.280


Retention Index (RI)


754 765 762 779 784 796 808 882 902 900 917 954 948


1024 1041


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