A convenient method for determining the concentration of hydrogen in water: use of methylene blue with colloidal platinum

Med Gas Res. 2012 Jan 24;2:1. doi: 10.1186/2045-9912-2-1.

Abstract

A simple titration (oxidimetry) method using a methylene blue-platinum colloid reagent is effective in determining the concentration of hydrogen gas in an aqueous solution. The method performs as effectively as the more complex and expensive electrochemical method.