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在 CTMAB存在下 ,p H为 4 .5的乙酸 -乙酸钠缓冲介质中 ,铜 ( )与 HBPCF形成 1∶ 3稳定的蓝色配合物 ,波长λmax=6 40 nm,ε640 =3.5× 10 4L· mol-1· cm-1。铜浓度在 0— 2 8μg/ 2 5 m L范围内符合比耳定律 ,可直接用于茶叶和人发中微量铜的光度法测定 ,结果满意
Copper () forms a 1: 3 stable blue complex with HBPCF in the presence of CTMAB at a pH 4.5 acetate-sodium acetate buffer medium with λmax = 640 nm and ε640 = 3.5 × 10 4 L · mol-1 · cm-1. Beer’s law is obeyed in the range of 0-2 8 μg / 25 m L, which can be directly used for the determination of trace copper in tea and human hair. The results are satisfactory