【摘要】 本文采用乙基紫——甲苯革取分光光度法测定阴离子表面活性剂。该法比常规的方法具有灵敏度高,背景吸收小,分析流程短,选择性高,重现性好。其线性范围在0～25μg/ml内。最低检出量0.009mg/l,回收率95～99％,变异系数2.1％。适用于环境监测分析。更多还原

【Abstract】 This paper discusses toluene extraction-spectrophotometric determination of anionic surfaetants with ethyl violet. The method has high sensitivity, small absorbency of the reagent blank, simple and less time-consuming procedure. It is scarcely interfered by coexisting ions, and has good reproducibility of determination of trace amounts of anionic surfactants. It is all linear in the range from 0 to 25 ppm. The limit of minimum detectability is 0.009 mg/1. The recovery is 95% to 99% and the standard deviation 2.1%.更多还原