for content of co 2 by gas chromatography the machine used was a chromopack model cp 2002 gas chromatograph in order to verify the mass balance a liquid sample of the amine solution in the analysis section is taken from the lower sampling point before the sample is taken the liquid in the analysis section is cooled using nitrogen gas surrounding the pipe section 59 the liquid sample is analysed using a titration technique specially developed for co 2 at the end of each run the liquid from the reservoir pipe 61 is released into the measurement drum 67 to measure the amount of liquid expended in the course of the run the results of the tests are shown in table 1 below the results show that virtually all the co 2 is absorbed from the gas to liquid solvent for the 50 and 25 mixture for all the flow rates tested only on reduction of the mea concentration to a mere 55 by weight does the amount of co 2 remaining in the gas reach appreciable levels from the measurement at the 5 level it can be seen that the absorption efficiency decreases with an increasing gas flow rate and gas volume fraction this result is expected since the already lean solvent mixture only 5 mea has.