复合驱中化学剂浓度同时测定方法研究

STUDYING ON THE SIMUTANEOUS DETERMINATION METHOD OF CHEMICAL AGENT CONCENTRATION IN COMPOUND FLOODING

针对油田复合驱中多种化学剂共存,目前所采用的单组分样品分析法同时测定其组分难度较大,提出了导数光谱法。利用该法测定了复合体系中KY、XCC和AOS的浓度,对其精密度及主要影响因素进行了探讨。实验结果表明,KY、XCC、AOS的质量浓度分别在2～100mg/L、3～60mg/L和2～100mg/L范围内,对应的波长分别在229.5,208.5,235.5nm处,其导数光谱服从比尔定律,并且三者的吸光度具有很好的加和性。测定所得的数据采用化学计量学——最小二乘法解析,从而对三种化学剂浓度分别进行测定。该法能在复合体系不经分离提纯的情况下,快速、准确地检测三种化学剂浓度,为复合驱中多组分溶液浓度的同时测定提供了一种新的技术手段。

In view of the fact that the components of compound flooding are complex,at present,it is difficult to simultaneously determine any component concentration by using analytic method of single component sample,the derivative spectrographic method is proposed.By using this method,the concentration of KY,XCC and AOS in the compound system are determined,and its accuracy and the major influencing factor are probed.The experimental result indicates that the concentration of KY,XCC and AOS are separately in 2～100mg/L,3～60mg/L and 2～100mg/L,the corresponding wave length separately in 229.5,208.5,235.5nm.Its derivative spectrum obeys the Bill law,and three extinctions have the very good additive property.The obtained data are analysed by the least squares method,thus the concentration of three kinds of chemical agents is separately determined.Without being separated and depurated,the multi-component solution concentration can be determined simultaneously and accurately.One new technical method is proposed to simultaneously determine the multi-component solution concentration.