几种水解聚丙烯酰胺及其相似物浓度测定方法分析

Research on methods for determination of concentration of HPAM and its similar material in aqueous solutions.

通过检索1975-2002年期间有关HPAM及其相似物浓度测定的研究成果,论述了6种水解聚丙烯酰胺及其相似物浓度测定技术,但其中5种测定技术受水解聚丙烯酰胺及其相似物水解度的影响,要求制作标准曲线的HlPAM水解度和待测样品中HPAM的水解度相同。通过对6种测定技术的基本原理、特点、干扰因素和应用范围评价得知,SEC和荧光分光光度法检测灵敏度最高,适用于样品中微量HPAM浓度测定;淀粉-碘化镉比色法干扰因素较少,精确度较高,是较为实用的方法,用于油田室内动态、静态吸附滞留研究和现场采出液聚合物浓度测定;粘度法可用于高浓度HPAM注入液常规质量检测,快速简便;浊度法具有较高的准确度和较少的干扰因素,在油田也有较广泛应用。

Based on research results of Polyacrylamide and its similar material concentration determination methods in 1975-2002, six groups of methods are summarized. . Among them, but, five are affected by degree of hydrolysis of HPAM and its similar material, and the degree of hydrolysis of the HPAM sample to be tested should equal to that of the standard. Comparison was made at aspects such as fundamental, advantages, disturbance factors and application limitation, with the results as follows: 1) the SEC and fluorescence spectrophotometry have the highest accuracy, which is fit for HPAM microdetermination; 2) there is less disturbance factors in starch-triiodide method, and the accuracy is higher, making it a practical method in lab static or dynamic adsorptive retention research and concentration determination for polymer in produced fluids; 3) the viscosimetry is suitable when regularly determine high concentration HPAM, fast and conveniently; 4) the turbidity method also has higher accuracy and less disturbance factors.