| 溴甲酚绿－溴化十六烷基吡啶光度法测定水中阴离子表面活性剂 |
| 摘要点击 1251 全文点击 1252 投稿时间：1995-07-15 |
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| 中文关键词 阴离子表面活性剂 溴甲酚绿 溴化十六烷基吡啶 分光光度法 |
| 英文关键词 anionic surfactants bromocresol green cetylpyridinium bromide spectrophotometry |
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| 中文摘要 |
| 建立溴甲酚绿(BCG)-溴化十六烷基吡啶(CPB)光度法测定水中阴离子表面活性剂的方法。实验表明,最适合的pH范围为5.5-9.0,λmax=614nm,在86μgCPB存在下,十二烷基苯磺酸钠(SDBS)和十二烷基硫酸钠(SDS)分别在0-80μg/10ml和0-75μg/10ml范围内符合比耳定律,其表观摩尔吸光系数分别为2.9×104和3.1×104L·mol-1·cm-1.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<3.0%,样品加标平均回收率为99.3%. |
| 英文摘要 |
| In this paper a spectrophotometric method has been developed for the determination of anionic surfactants in water with bromocresol green(BCG) and cetylpyridinium bromide(CPB).Sodium dodecylbenzenesulfonate(SDBS) and sodium dodecylsulfate(SDS) were determined at 614 nm and pH range of 5.5-9.0.In the concentration range of 0-80 μg/10 ml for SDBS and 0-75μg/10 ml for SDS,both of them obey Beer's law in the presence of 86 μg CPB.The apparent molar absorptivities are 2.9 ×104 L·mol-1·cm-1 for SDBS and 3.1×104 L·mol-1·cm-1 for SDS.The proposed method has been applied to the determination of anionic surfactants in river water and wastewater.The average recovery of environmental water samples was 99.3% and the relative standard deviation was less than 3.0%. |
