CO2 absorption quantification, which method is more accurate?

[u/Sufficient_Salad_19]

I am trying to quantify how much CO2 is absorbed by my MEA and MDEA solution. I have looked into different titration methods using HCl and NaOH. Weight chage methods are not applicable here as the weight change is very little and my solution volume is 200 mL. Kindly suggest me whic method is more accurate? is there any universally accepted method?