Determination of Anionic Surfactants in Environmen- tal Water Samples Using Fluorescence Enhancement Method Based on Fe3 O4 @ PAA-RB Fluorescent Nan- oparticles

• 作者: RAO Tong-de
• 来源期刊: 气象与环境研究：英文版
• 学科: 化学
• 关键词: 阴离子表面活性剂 荧光增强作用 四氧化三铁 测定方法 环境水样 增强算法 十二烷基硫酸钠 相对标准偏差
• 年，卷（期）: 2012,（5）
• 页码范围: 25-27
• 页数: 3页
• 分类号: O647.2

摘要

[Objective] The study aims at developing a novel fluorescence enhancement method to determine anionic surfactants. [Method] Based on Fe3O4@PAA-RB fluorescent nanoparticles as fluorescent probes, we have developed a novel fluorescence enhancement method for the determination of an anionic surfactant sodium dodecyl sulfate (SDS) through the gradual optimization of experiment conditions. [Result] Under the optimum conditions, the extent of fluorescence enhancement is directly proportional to SDS concentration varying from 0.5 to 16.0 μmol/L, and the detection limit reaches 0.051 μmol/L. The relative standard deviation (RSD) for 4.0 μmol/L SDS is 3.3% (n=6). The proposed method has been successfully applied to the determination of SDS in environmental water samples, with recovery of 96.3%-105.5%. [Conclusion] The novel fluorescence enhancement method is not only simple and rapid, but also has avoided using tedious solvent-extraction and toxic organic solvents.