The use of a precious metal as an antimicrobial agent for aqueous solutions represents a time-honored method of disinfection. Ions released from the metal disrupt cellular respiration and reproductive processes in microorganisms. This approach effectively renders water potable by inhibiting the proliferation of harmful bacteria and other pathogens.
This method provides a residual disinfection effect, maintaining water purity over extended periods. Historically, civilizations have employed metal vessels to store and transport water, unknowingly benefiting from the oligodynamic effect. Contemporary applications extend to point-of-use water filters, storage tanks, and various water treatment systems, particularly in situations where access to conventional disinfection methods is limited.