PROGRAMMED-TEMPERATURE GAS-CHROMATOGRAPHIC RETENTION INDEX

Thirty years of studies on the definitions and calculation methods of the gas chromatographic programmed-temperature retention index values and the various conversion methods between retention values under diff erent gas chromatographic conditions have been reviewed. The programme d-temperature retention value databases compiled in various laboratori es are listed. Special emphasis is placed on the recent advances in re producing programmed-temperature retention indexes under different chr omatographic conditions.