摘要
通过不同类型的表面活性剂对水杨基荧光酮—H2O2—Co(Ⅱ)体系的化学发光反应的实验,发现阳离子表面活性剂溴化十六烷基三甲基铵在pH=9.6～10.0具有显著的增敏作用,金属Co(Ⅱ)的检出限达0.07μg/L,线性范围0.7～140μg/L,结果满意。机理研究表明,增敏作用主要与表面活性剂形成化学发光体系的过程有关,H2O2含量、pH值、阳离子碳链的长度、胶束的电场作用、增溶作用和胶束的能量绝缘均会影响增敏效果。当φ(H2O2)≤1%时测定灵敏度较高,最佳pH值为9.80±0.2,溴化十六烷基三甲基铵对水杨基荧光酮的增敏作用最强,胶束的电场作用以及胶束的能量绝缘与增敏效果有着密切的关系。
Marked spike action of cation surface-active agent,hexadecyl trimethyl ammonium bromide(CTMAB),was found between pH 9.6 to 10.0 through the experiments that all kinds of surface-active agents and salicyl fluorine-H2O2-Co(II)system occurred to chemical luminous reactions.Co(II)would be detected when its content was beyond 7.0×10-2 μg·L.Spike action was mainly related to several factors such as the process of forming the surface-active agent luminous system and electric field action and energy insulator of mi...
出处
《化工生产与技术》
CAS
2006年第4期58-60,1,共4页
Chemical Production and Technology
关键词
化学发光
增敏
溴化十六烷基三甲基铵
CTMAB
chemical luminous reaction
spike action
hexadecyl trimethyl ammonium bromide（CTMAB）
