用硅质二醇固定相测定化学驱油体系中聚丙烯酰胺

Determination of Polyacrylamide in ChemicalFlooding Systems with Macroporous(Macropore)Silica Baded Diol Phase

中文关键词:  聚丙烯酰胺  大孔硅质二醇  固定相  化学驱油  凝胶渗透色谱法

英文关键词:Polyacrylamide  Macroporous silica diol  Stationary phase  Chemical flooding  Gel permeation chromatography

中文摘要:

      用凝胶渗透色谱法在三种不同孔径大孔硅质二醇固定相上,快速定量测定了化学驱油体系中部分水解的聚丙烯酰胺。该方法以大孔二醇硅质SI-500、SI-1000、SI-3000(孔径分别为50nm、100nm和300nm)为固定相,以0.2mol/L及0.5mol/L NaH₂PO₄为流动相,在210nm处检测。表面活性剂及聚合物驱油液中所有组分对聚丙烯乳胶的测定均无干扰;最低检测限为2mg/L～4mg/L;回收率为92%～108%;3min之内可完成一次样品的测定。

英文摘要:

      Detemination of partially hydrolyzed polyacrylamide(PHPA)in chemical flooding systems with three pore diameter macroporous silica based diol phases is described. The diol phases SI-500,SI-1000,SI-3000 of pore size 50,100 and 300nm,respectively, are self synthesized in our laboratory.The mobile phases are 0.2mol/L or 0.5mol/0.5mol/L NaH₂PO₄and synthesized in our laboratory.The mobile phases are 0.2mol/L or 0.5mol/L NaH₂PO₄ and the detection is made at UV 210nm.The applications of rapidly quantitative determination of partially hydrolzed polyacrylamide(PHPA)in chemical flooding systems on different pore diameter macroporous silica diol stationary phases are described.The minimum detection concentration is found as 4mg/L and the recovery lies between 92% to 108%.Among three diol phases SI-500(pore she of 50nm)is the one to give the best resolution.A sample analysis can be achieved within 3 minutes.All additives in surfactant/polymer flooding systems show no interference.This method of determining PHPA is shown to bevery rapid and operative.