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Investigation on precision and accuracy of gas chromatography equipped with   thermal conductivity detector (GC-TCD) method for the measurement of CO2,   C3H8, and CO as pollutant models at different flow rate of helium (He)   carrier gas ranging from 17.50 to 36.25 ml/min were conducted. It was found   that percentage of relative standard deviation (%RSD) values for both   precision an accuracy show an overall gradual decrease as the carrier gas   flow rates increased up to 25 ml/min. After that, the %RSD was found to   increase with a further increase in the flow rate. These findings indicate   that the flow rate of 25 ml/min was found to be the most precise and accurate   level among all flow rates tested under experimental conditions of this   study. While the %RSD values obtained at all flow rate are given in details.   Consequently, our results suggest that the flow rate of carrier gas was a   determining parameter for varying the precision and accuracy of the GC-TCD   method. Owing to the fact that carrier gas act as a transporter of components   of the mixture in the form of vapor or gas through the column, setting of the   flow rate of carrier gas should in proper level achieve a precision and   accuracy of the GC-TCD method

Estimating precision and accuracy of GC-TCD method for carbon dioxide, propane and carbon monoxide determination at different flow rate of carrier gas