Trace Determination of Cyanide in Chinese Liquor by Coupling Automatic Distillation with the Flow Analysis Method

Cyanide, a highly toxic compound, may exist in trace amounts in distilled Chinese liquor, a traditional spirit consumed by over a billion people. To enhance the efficiency and re- liability of cyanide detection, we propose a rapid, fully automated method integrating steam distillation with a continuous flow analyzer. This system combines sample pre- treatment, fast distillation, and colorimetric detection using the isonicotinic-barbituric acid chromogenic system based on Lambert–Beer law...