实验以碱性阴离子交换树脂测定石油磺酸盐中有效物含量.通过紫外分光光度法绘制了石油磺酸盐标准工作曲线,并从D201,D290,D262,D301,D380树脂中进行了筛选,考察了优选树脂对石油磺酸盐的静态吸附条件.结果表明:D290优于其他树脂,在吸附平衡时间1～1.5 h、pH=2、t=20 ℃条件下树脂最大交换容量为1.5 mg/g,在此条件下,用树脂装柱法测得石油磺酸盐质量分数为16.43%,与萃取法和两相滴定法相比,树脂吸附法测定结果与两相滴定法接近,准确度高.%The content of petroleum sulfonates was determined by macroporous basic anion exchange resin effectively. The petroleum sulfonates standard working curve was obtained by UV spectrophotometry. An optimum resin was chosen from D201, D290, D262, D301 and D380, and the resin static adsorption conditions were studied. The experimental results showed that D290 is superior to other resins; the optimum static adsorption conditions are: pH=2, t=20 ℃. Under these conditions, the highest resin exchange capacity is 1.5 mg/g, and the adsorption time is 1.5 - 1 h. Under these conditions with resin adsorption measurement method the petroleum sulfonates content is 16.43％. Compared with the extraction method and the two-phase titrimetric method, this new method has the similar determination result with the two-phase titrimetric method and the accuracy is high.
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