论文部分内容阅读
一、简介为了检测超微量汞,我们研究了用黄金薄膜测汞的新型测汞仪,本仪器的敏感元件是用黄金制成的薄膜电阻,它吸附流经其表面的汞蒸气后,电阻值发生变化,电阻的增量在毫微克的条件下与所吸附的汞量成正比。因此测量电阻的增量就可得出气体中的含汞量。金膜吸汞达到“饱和”状态后,可在150℃下加热10分钟,以除去所吸附的汞,使其再
I. INTRODUCTION In order to detect ultra trace mercury, we studied a new mercury analyzer using gold film to measure mercury. The sensitive element of the instrument is a thin film resistor made of gold. After it adsorbs the mercury vapor flowing through the surface, the resistance value As a result, the increase in resistance is directly proportional to the amount of mercury adsorbed at nanograms. Therefore, measuring the increment of resistance gives the mercury content in the gas. After the gold-aspirated mercury reaches the “saturated” state, it can be heated at 150 ° C for 10 minutes to remove the adsorbed mercury and make it