Microwave sample preparation is the technology of choice for trace and ultra-trace metals analysis. Microwave ovens began to find widespread use in chemical laboratories in the late 1980’s. The use of laboratory microwave units has become increasingly popular since then.
High temperature ad/or pressure, and closed vessel make acid digestion of solid samples in less time than older methods (minutes rather than hours), use less acid, and retain even volatile elements.
Microwave digestion usually involves placing a sample in an acid solution in closed vessels and heating to high temperatures and/or pressures. These extreme conditions using microwave radiation can significantly improve the chemical reaction rates and dissolve most materials.
