The improved method of total water analysis for offshore oilfield

It is important to measure the concentration of the CO₃^2- and HCO₃^- ions locally and quickly due to their special changeability and the disadvantages of the present analytical standard.CO₂ and other ion selective elect rodes was used to determine the changeable ions in water of offshore oilfield for the first time. Compared with traditional acid-base tit ration, the results of selective elect rodes are almost the same.Additionally, it is more convenient and suitable for the local determination of the CO₃^2- and HCO₃^- ions by using the CO₂ electrode.