Abstract:

Quaternary ammonium salt and 3-nitrophenol have been used for preparing the complex compound which is soluble in organic solvent. The complex compound can be determined quantitatively with UV detector. An improved method for the determination of trace quaternary ammonium salt by the high performance liquidchromatography is established. The linear range of the method is 0.60-99.40 mg/L. Its lowest detection limit 0.4 mg/L， average recovery rate 94.97%-104.02% and relative standard deviation 3.41%. The method is rapid,convenient and highly sensitive. It is suitable for the determination of the content of cationic surfactant of quaternary ammonium salts in circulating cooling water，industrial wastewater and water treatment agents.

Key words: quaternary ammonium salt, 3-nitrophenol, high performance liquid chromatography

摘要：

利用季铵盐与间硝基酚反应生成溶于有机溶剂的络合物,该络合物可以用紫外检测器进行定量分析,建立了一种高效液相色谱测定微量季铵盐的改进方法。该方法的线性范围为0.60～99.40 mg/L,最低检出限可达0.4mg/L,平均回收率为94.97%～104.02%,相对标准偏差为3.41%。该方法稳定、简便且灵敏度高,适于测定锅炉循环冷却水、工业废水及水处理药剂中季铵盐类阳离子表面活性剂的含量。

关键词: 季铵盐, 间硝基酚, 高效液相色谱

CLC Number: 

• X832