“…Several well-established analytical techniques exist for quantifying MEG in multicomponent mixtures; these include gas chromatography (Riaz et al, 2011), optical sensors (McDowell et al, 2017), conductivity, sound velocity (Yang and Tohidi, 2013) and infrared sensors (Haghi et al, 2018). Such techniques are able to accurately determine the MEG concentration under specific conditions; however, with regards to application to the natural gas industry they are not without limitations.…”