Computerized system with a hard-wired data-acquisition unit for potentiometric stripping analysis

✍ Scribed by Boy Høyer; Hans Jørgen Skov; Lars Kryger

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 945 KB
• Volume: 188
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86044-4

✦ Synopsis

The system comprises an electrochemical module interfaced to and controlled by an Apple-IIe microcomputer. A high data-acquisition rate (660 kHz) is achieved by equipping the electrochemical module with a separate memory which is updated in hardware during recording of the stripping step. When a preset cut-off potential is exceeded, data acquisition is automatically termmated, and potentiostatic conditions are resumed. The electrochemical module also contains facilities for instrumental control. The controlling program for the microcomputer is written in assembler code, which can be linked to BASIC routines if necessary. Examples are given to illustrate the advantages of fast data acquisition in improving detection limits and reducing deposition times.