采用单板计算机控制的方波极谱分析仪

The Square Wave Polarographic Analytical Instrument Controlled by Single-board Computer

方波极谱分析仪是一种常用的、经典的电化学分析仪器。它具有速度快、灵敏度高等优点。但普通方波极谱分析仪的输出结果不直观,电容电流的处理,滴汞下落时间的测定都有一定的困难,因而限制了它的进一步应用。本文介绍了计算机过程控制在方波极谱分析仪方面的一个应用,并具体叙述了硬件、软件的实现方法。该极谱分析仪具有测量速度快、输出结果直观和自动化程度高等优点。

The square wave polarographic analytical instrument is a commonand classic electrochemical one, which has high sensitivity and good speed of deter-mination. But there are also many disadvantages in it, such as indirect display ofresults, difficulty to process capacity current and to determine time of the droppingof mercury. These problems limit the further application of this instrument. Thispaper introduces a computer-controlled process in its application and proposes theway to realize both the hardware and software. Computer-controlled, the instrumentbecomes quick to determine samples, direct to show results, and highly automatic.