摘要
在pH=4.5HAc-NaAc缓冲介质中,CTMAB存在下,邻羧基苯基荧光酮(o-CPF)和Te(Ⅳ)生成4∶1稳定络合物,λmax=560nm,ε=1.25×105L·mol-1·cm-1。Te(Ⅳ)含量在0—10μg/25mL内符合比耳定律,方法用于烟尘中碲的测定,结果令人满意。
In the presence of pH=4.5 HAc NaAc buffer solution and CTMAB medium.Te(Ⅳ) can reacts with o Carboxyphenylfluorone( o CPF) to form a 1∶4 stable complex.The molar absorptivity is 1.25 ×10 5L·mol -1 ·cm -1 at 560nm.Beer's law is obeyed in the range of 0 10μg/25mL.This method can be applied to the determination of tellurium with satisfactory results.
出处
《光谱实验室》
CAS
CSCD
1999年第2期180-182,共3页
Chinese Journal of Spectroscopy Laboratory