荧光（发射）法检测复合驱油体系中的表面活性剂

FLUORESCENCE EMISSION AS A MEANS FOR DETERMINING SURFACTANT(S) IN ALKALINE/SURFACTANT/POLYMER FLOODING SOLUTIONS

含苯氧基的非离子型和阴离子型表面活性剂在一定激发波长下可发出特定波长的荧光，在稀溶液中荧光发射强度与其浓度成正比，不受溶液里存在的其他物质的影响，在适当条件下相互之间也无影响。本文报道了用荧光法检测复合驱油体系中的ＯＰ－１０、石油磺酸盐ＯＰ－１０＋石油磺酸盐的结果和研究油砂从复合驱油体系中吸附ＯＰ－１０的结果，此法选择性高．灵敏度高，操作简便，可望用于复合驱油体系中表面活性剂的分析、研究。

The determination of surfactant(s) in alkaline/surfactant/polymer floocling solutions is still an unesiazy job. For this purpose the method of fluorescence emission by phenoxy-containing surfactants in dilute solutions is suggested. The fluorenscence emission intensity chanses linearly with the surfactant concentration at low solution concentrations and is not enfluenced by the presence of alkali, polymer HPAM and salts. Under certain conditions the fluorescence emission by different surfactante, OP-10 and petroleum sulfonate in this case, can be detected indepondently. This method is hihg-selective,sensitive(the lowest detectable concentration 10-7 mol/l and microanalytical (the amount of test solution 2- 3μl). The specifiic surface area of an oily sand sample calculated from OP-10 adsorption data by this method is 2. 8m2/g, which is compatible to the value found by BET technique, 1.7m2/8.