次氯酸钠氧化法测定聚丙烯酰胺浓度的研究

Study on the determination of partially hydrolyzed polyacrylamide by sodium hypochlorite oxidization method

阐述了次氯酸钠氧化法(浊度法)测定部分水解聚丙烯酰胺浓度的反应机理,研究了聚丙烯酰胺的相对分子质量、次氯酸钠溶液浓度、反应时间对吸光度值的影响,针对大庆油田杏二中三元复合驱采出水中含有碱和表面活性剂、pH值高、黏度大、富集硫化物和亚硫酸根等特点,提出采用过硫酸铵-浊度法检测三元复合驱采出水中聚丙烯酰胺浓度。

The reaction mechanism of sodium hypochlorite oxidization method （turbidity method） for the determination of partially hydrolyzed polyacrylamide is described. The effects of molecular weight of polyacrylamide,concentration of sodium hypochlorite solution and reaction time on the absorbance have been studied in detail， To minimize the interferences of factors such as alkali, surfactant, high pH, high viscosity, and enrich sulfide and sulfite in alkali surfactant polymer flooding produced liquid at Daqing Oilfield， ammonium persulfate turbidity method is first introduced in the determination of HPAM.