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研究了1 (2,6 二溴 4 硝基苯) 3 (4 硝基苯) 三氮烯(DBNPNPT)在NaOH介质中与阳离子表面活性剂溴化十六烷基三甲铵(CTMAB)、溴化十六烷基吡啶(CPB)的显色反应.该试剂与CTMAB、CPB均可生成紫红色离子缔合物(n(DBNPNPT):n样=1∶2),用双峰双波长法测定其表观摩尔吸光系数分别为3.67×104L·mol-1·cm-1和4.11×104L·mol-1·cm-1,符合比耳定律的范围分别为ρ(CTMAB)=0～13.85mg/L和ρ(CPB)=0～16.09mg/L.方法已用于合成样品中微量阳离子表面活性剂CTMAB、CPB的测定.
The effects of 1, 2,6-dibromo-4-nitrophenyl-3 (4nitrobenzene) triazene (DBNPNPT) on the photocatalytic activity of cationic surfactant CTABB, (C (DBNPNPT): n-like = 1: 2) was synthesized with CTMAB and CPB.The bimodal double wavelength The apparent molar absorptivities were 3.67 × 104L · mol-1 · cm-1 and 4.11 × 104L · mol-1 · cm-1, respectively. The range of Beer’s law was ρ (CTMAB) = 0 ~ 13.85mg / L And ρ (CPB) = 0 ~ 16.09 mg / L. The method has been applied to the determination of trace cationic surfactants CTMAB and CPB in synthetic samples.