摘要： The evaporation of water phase has been used to remove a vast amount of inorganic salts and interferingorganic components. The distillate concentrated by rotary evaporator was directly analyzed by means of wide-bore capillary GC column, The coefficients of variation for C_2～C_5 organic acids were 1.9～6.4%. The recov-eries of the acids in the oilfield water were 81.0～106%.
