A spectrophotometric flow injection procedure for the determination of lead is described. The procedure is based on measurement of absorbance from the colour produced by the reaction of lead with sodium sulfide in the presence of ammonia. Results are presented for lead at a sample throughput of 60 h(-1) and repeatability is 1.5% at 1000 mg/dl. The method is well demonstrated by analyzing lead in lead-ores which were pre-determined by using atomic absorption spectroscopy.


S KHATOON ,M YAQOONB ,A NABI ,