三元复合驱采出液中硅离子的定量分析  

Quantitative Analysis of Silicon Ion in ASP-Flooding Produced Water

作　　者：荆国林[1,2] 唐珊[2] 李笑笑[2] 汪怀远[2] 

机构地区：[1]北京工业大学能源与环境工程学院,北京100022 [2]东北石油大学化学化工学院,黑龙江大庆163318

出　　处：《油田化学》2013年第3期457-459,共3页Oilfield Chemistry

基　　金：黑龙江省教育厅科学技术研究项目"三采地面集输管线结垢机理及防治措施研究"(项目编号12521047)

摘　　要：将硅钼黄分光光度法用于三元复合驱采出液中硅离子的定量分析,考察了碱(NaOH)、聚合物(HPAM)、表面活性剂十二烷基苯磺酸钠(LAS)对硅离子定量分析的影响。结果表明,水样中含有的LAS(0~2400 mg/L)和NaOH(0~7200 mg/L)对硅离子的定量分析几乎无影响。高浓度NaOH(>7200 mg/L)对测定的影响可以用盐酸消除。在pH值为1.2、高分子量HPAM(M=3500万)加量为0~80 mg/L时,随着HPAM浓度增加,溶液吸光度增大。这一影响不能通过加入1 mL丙酮消除,但可用蒸馏水稀释消除。低分子量(M=300万)、低浓度(0~40mg/L)聚合物几乎不影响硅离子测定。该法可准确、快速地分析三元复合驱采出液中的硅离子含量,标准曲线的线性回归方程为:A=0.0145c,相关系数R^2为0.9996,线性范围0~20 mg/L,测定的准确度大于98%,相对标准偏差1.39%,重现性较好。The silicon molybdbenum yellow method for spectrophotometry determination was applied to quantitative analyze silicon ion in ASP-flooding produced water. The effects of NaOH, polymer （HPAM） and sodium dodecylbenzene sulfonate （LAS） on quantitative analysis of silicon ions were discussed. The results showed that NaOH （0-7200 mg/L） and LAS （0-2400 mg/L） had almost no effect on the absorbance. Hydrochloric acid could be used to eliminate the influence of NaOH with high concentration （〉 7200 mg/L）. When the pH value was 1.2 and the dosage of HPAM （M=35 million） was between 0 and 80 mg/L, solution absorbance increased with increasing concentration of HPAM. The interference of polymer on the measuring of silicon ion could not be eliminated by adding 1 mL acetone, but it could be eliminated by diluting with distilled water. The interference of polymer with low molecular weight （M=3 million） and low concentration （0-40 rag/L） was weak. The method suggested was simple, rapid and of satisfactory precision and accuracy. The standard curve of linear regression equation was： A=0.0145c, and the correlation coefficient R2 was 0.9996. The linearity of absorbance concentration relationship maintained in the range of silicon ion concentration 0-20 mg/L. The accuracy of the method was less than 2%. The measured value of the relative standard deviation was only 1.39%, which indicated the repeatability of this method was good.

关 键 词：三元复合驱 硅离子 硅钼黄法 分光光度法 油田采出水 

分 类 号：O655[理学—分析化学] TE39[理学—化学]