论文部分内容阅读
本文建立了溴化十二烷基二甲基苄基铵－溴麝香草酚蓝分光光度法水相直接测定阴离子表面活性剂的方法。ＳＤＢＳ在０～１９５μｇ／１０ｍｌ，ＳＤＳ在０～１５８μｇ／１０ｍｌ，ＳＬＳ在０～６０μｇ／１０ｍｌ范围内遵守比耳定律，其表观摩尔吸光系数分别为：３．９９×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）（ＳＤＢＳ）；３．７０×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）（ＳＤＳ）；１．７１×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）（ＳＬＳ）。用此法测定了河水和生活废水中的阴离子表面活性剂，相对标准偏差为０．５７％～１．２％，回收率为９５．５％～１０３％。
In this paper, a method for the direct determination of anionic surfactant in aqueous phase by dodecyl dimethyl benzyl ammonium bromide-bromothymol blue spectrophotometry was established. The apparent molar absorptivities of SDBS at 0 ~ 195μg / 10ml, SDS at 0 ~ 158μg / 10ml and SLS at 0 ~ 60μg / 10ml ranged from 3.99 × 10-4L · mol ~ ( -1) · cm -1 (SDBS); 3.70 × 10 -4 L · mol -1 (-1) · cm -1 (SDS); 1.71 × 10 -4 L · mol -1 -1) · cm -1 (SLS). The anionic surfactants in river water and domestic wastewater were determined by this method. The relative standard deviations were 0.57% ~ 1.2% and the recoveries were 95.5% ~ 103%.