采用激发光谱法准确检测复配体系中HABS浓度

Quantitative Determination of HABS Concentration in Surfactant Complex Systems induced by the excited UV absorption spectrometry

石东坡 尹先清 陈 武 付家新 任朝华 王任芳

SHI Dong-Po YIN Xian-Qing CHEN Wu FU Jia-Xin REN Zhao-Hua WANG Ren-Fang

研究并建立了准确检测多元复配驱油体系中重烷基苯磺酸盐(HABS)含量的方法。通过β-环糊精诱导HABS产生激发的紫外光谱信号检测水溶液体系中HABS的含量。结果表明，β-环糊精的诱导作用能显著提高HABS的检测精度，同时还能明显降低三采复配驱油剂中烷基酚聚氧乙烯醚(OP-10)、十二烷基磺酸钠(SDS)及聚丙烯酰胺(HPAM)等不同类型的常用组分对HABS定量产生的干扰。该方法检测HABS组分含量的检测精度为10-2~10-3mg/L，检测的最大误差为2.2%，驱油剂中各干扰组分对HABS的定量影响没有产生协同效应。

a new method was developed for the composition quantitative determination of heavy alkylbenzene sulfonate(HABS) in surfactant complex systems. The absorption spectra of HABS showed the presence of β-cyclodextrin (β-CD) could result in the enhancement of absorption intensities of HABS. The results indicated that the determination precision of HABS can be significantly improved by β-CD, and the effect of several common interfering substances (SDS,OP-10,HPAM,Cl-,Na+,Ca2+,etc.) on determination of HABS in β-CD aqueous solution can be greatly reduced. Based on this, the maximum errors of the determined HABS are less than 2.2% under multifactor interferences, and the precision of the method is as high as 10-2~10-3 mg/L. In general, synergistic effect of these interference factors could not formed by the excited UV absorption spectrometry.