10.5.4.4 Relative Retention Times (RRT). Calculate the RRTs for each target compound over the initial
calibration range using the following equation:
where: RT = Retention time of the target compound, seconds c
RT = Retention time of the internal standard, seconds. is
10.5.4.5 Mean of the Relative Retention Times ( ). Calculate the mean of the relative retention
times ( ) for each analyte target compound over the initial calibration range using the following equation:
where: = Mean relative retention time for the target compound for each initial calibration
standard.
RRT = Relative retention time for the target compound at each calibration level