PLATINUM NANOCOLLOID SOLUTION, PROCESS FOR PRODUCING THE SAME AND DRINK CONTAINING PLATINUM NANOCOLLOID

摘要

A platinum nanocolloid solution comprising platinum nanocolloids and a polyacrylic acid salt, wherein the platinum nanocolloids have an average particle diameter of 1 to 5 nm and wherein 90% or more of the particle diameters thereof fall within the range of 0.1 to 10 nm; and a drink comprising the platinum nanocolloid solution. There is further provided a process for producing the platinum nanocolloid solution, comprising refluxing a solution containing a platinum salt, a polyacrylic acid salt, an alcohol and water, evaporating the alcohol and water from the solution so as to allow part thereof to remain, adding an alcohol and again evaporating the alcohol and water.