Sulfide and hydrogen sulfide in water – Inexpensive determination by potentiometric titration

Sulfides are a commonly found class of minerals that are malodorous and cause corrosion problems in wastewater treatment facilities (especially concerning concrete and iron). In acidic water, sulfides react to form hydrogen sulfides, which are extremely toxic even at low levels. Therefore, it is important to monitor the amount of sulfides and hydrogen sulfides in the water. This application note describes the trace level determination of sulfides and hydrogen sulfides in water in by potentiometric titration.