The measurement of sulfide, especially hydrogen sulfide, has held the attention of the analytical community due to its unique physiological and pathophysiological roles in biological systems. Electrochemical detection offers a rapid, highly sensitive, affordable, simple, and real-time technique to measure hydrogen sulfide concentration, which has been a well-documented and reliable method. This...

A method has been developed for the continuous monitoring of oxygen tension in solutions and gases. The oxygen is reduced at a platinum surface which is covered with a plastic membrane. The silver-silver oxide reference electrode is also included under the membrane. Drift is less than 10 per cent for a period of days, and temperature compcnsation is possible. A number of uses to which it has be...

In a previous publication (2) a double displacement mechanism for the catalytic activity of rhodanese (thiosulfate cyanide sulfurtransferase) was proposed on the basis of polarographic evidence. In addition it was concluded from the polarographic data that crystahine beef liver rhodanese is an enzyme-substrate intermediate containing two activated substrate sulfur atoms per molecule. This commu...