Cyanide sensor

Current Context : Kerala researchers developed a  cyanide sensor to enhance safety of water and food products.

ABOUT CYANIDE

• It is a potent toxin which is present in various plants, fruits, and microorganisms.
• Cyanide exposure can occur through consumption of certain foods like cassava (tapioca) and even common items like apple and apricot seeds, sprouting potatoes, and almonds.
• Released from natural substances in some foods and certain plants (e.g., fruit pits and seeds).
• The risk is particularly severe in regions where cyanide-rich foods are staples.
• The sensor appears yellow when dissolved but turns colorless when cyanide is detected, providing an easy visual signal.
• Used in manufacturing for paper, textiles, plastics, and in photographic chemicals.
• The World Health Organisation (WHO) has set strict guidelines for its presence in potable water, limiting cyanide concentrations to below 0.19 mg/L due to its lethal effects on humans and aquatic life.