摘要
本文研究了 Pb( ) - SXO- CTMAB- Span80体系的显色反应。该反应快速、灵敏、稳定。表观摩尔吸光系数 ε56 0 =3.36× 10 4 L· mol- 1· cm- 1 ,铅含量在 0— 4 0 μg/ 2 5 m L 范围内符合比耳定律 。
A new method for the determination of lead(Ⅱ) by its reaction with SXO in the presence of CTMAB and span 80 is reported.The apparent molar absorptivity is found to be 3.36×10 4L· mol -1 ·cm -1 at 560nm.Bears law is obeyed in the concentration range of 0-40μg of Pb(Ⅱ) per 25mL of solution.This method has been applied to the determination of Pb(Ⅱ) on leaves.
出处
《光谱实验室》
CAS
CSCD
2002年第6期745-747,共3页
Chinese Journal of Spectroscopy Laboratory
