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目前,铜的分光光度法测定有Cu-CPB-PAN,5-Br-PADN-Cu,Cu-CAS-CTMAB等方法,Cu-CAS-CTMAB的方法灵敏度较高,但选择性不够高,需要用有机溶剂萃取分离干扰元素。本文利用表面活性剂对漂蓝6B(ECAB),与某些金属离子体系有增敏作用,探讨了Cu与ECAB在溴化十六烷基三甲铵(CTMAB)的存在下能形成绿色的三元络合物,其生成条件及组成,溶液在pH6.4～7.4区间显色完全,最大吸收波长在624nm,表观摩尔吸光系数为1.1×10~5。本法反应在灵敏度上与铬天菁S
At present, Cu-CPB-PAN, 5-Br-PADN-Cu and Cu-CAS-CTMAB are determined by spectrophotometry. The Cu-CAS-CTMAB method is more sensitive but less selective. Organic solvent extraction to separate interfering elements. In this paper, surfactant bleaching blue 6B (ECAB), and some metal ion system sensitization effect of Cu and ECAB in the presence of cetyltrimethylammonium bromide (CTMAB) can form a green ternary The complex, its formation conditions and composition, the solution was completely developed in the pH range of 6.4 ~ 7.4, the maximum absorption wavelength at 624nm, the apparent molar absorptivity of 1.1 × 10 ~ 5. This method responds sensitively to Chrysanthemum S