摘要
通过自制金汞齐富集管,在不同时间和不同气相汞浓度下,采用双臂数字电桥测量了金汞齐的电导率.结果表明,气相汞浓度越高,金汞齐的电阻越大;金汞齐中汞含量与金汞齐电导率之间表现为线性关系,当金汞齐中汞含量为5.26 ppb时,其电导率为3.96×107S.m-1;金汞齐的电阻随着富集时间的延长而增大,电阻与富集时间的关系可用单表面Langmuir模型表示;金丝富集气相汞形成金汞齐可能应用的是单分子表面吸附机制.
With the self-made gold amalgamation enrichment tube, the electrical conductivity of gold amal- gamation is detected with two armed digital electric bridge at different time and with different gas phase concentration. The results reveal that the resistance of gold amalgamation grows with the increase of con- centration of gas phase mercury. The relation between the content and electrical conductivity of gold amalgamation is linear. When the content of mercury is 5.26 ppb, the electrical conductivity is 3.96 × 10^7 S· m^- 1. The resistance increases with the time of enrichment. The relation of resistance and enrichment time can be indicated with the Uniform-surface Langmuir equation. It can be unimolecular surface absorption mechanism that gold-enriched gas phase mercury forms gold amalgamation.
出处
《重庆工学院学报（自然科学版）》
2008年第3期108-110,共3页
Journal of Chongqing Institute of Technology
基金
重庆市自然科学基金资助项目(CSTC
2006BB7390)
关键词
金汞齐
电导率
动力学
gold amalgamation
electrical conductivity
kinetics
