油田水中低碳酸的分析

ANALYSIS ON SHORT-CHAIN CARBOXYLIC ACIDS FROM OIL-FIELD WATER

程中第 应凤祥

Cheng Zhongdi Ying Fengxiang

北京石油勘探开发科学研究院, 北京 100083

Beijing Research Institute of Petroleum Exploration and Development

本文高效液相色谱法(HPLC)、离子谱法(IC)、毛细管电泳法(CE)分析油田水及干酪根水热降解液中的低碳酸(C1-C5-无酸,C2-C6二无酸)及短侧链羧酸离子(RCOO-)的含量及分布。HPLC法(DDS-C18)适用于油田水;IC法(AS-1柱Dionex)适用于干酪根降解液;CE法(空管毛细柱)适用于常规浓度下的这两类样品。液样只经滤膜过滤即可直接进样分析,方法简便,重复性好。

In this paper,high pressure liquid chromatography(HPLC),ion chromatography(IC)and capillary electrophoresis(CE)are applied to analyze the anion(RCOO-)content and distribution of short-chain carboxylic acids(C1-C5 monoaiomic acid,C2-C6 biatomic acid)from oil-field water and the hydrothermal degraded solution of kerogens.HPLC method(ODS-C18column)is suitable for oil-field water,IC method(AS-1 Dionex column)for the degraded solution of kerogens while CE method(hollow capillary column)for the both kinds of samples with conventional concentration.The liquid samples only need to be through a filter film,being analyzed by direct injection of samples.Therefore,this method is simple and convenient with fair repeatability.

https://doi.org/10.11781/sysydz199501078