Lead determination at the ppb level using stopped-flow FIA.
A flow-injection-based kinetic method for the determination of lead ions was developed. In this method, resazurin was reduced to resorufin by sulfide and lead ions. The method has a detection limit of 1 ppb with a relative standard deviation of 5.2% at the 20 ppb level. Interferences can be removed by prior extraction.
Li
M
M
Department of Chemistry, Oxford, OH 45056, USA.
Pacey
G E
GE