FAAS Determination of Zinc in Water Samples after Enrichment by Coprecipitation with Mn(II)-5-Br-PADAP

Flame atomic absorption spectrometry (FAAS) can determinate the contention of Zn2+ in water samples rapidly. Choosing 2 - (5 - bromo-2-pyridylazo) -5 - diethylaminophenol (5-Br-PADAP) as a precipitating agent, Mn2 + as the carrier ion to separate and enrich Zn2+ in water samples. And studies show that the selected system is affected by acidity, the amount of precipitant concentration, carrier usage and aging time factors. The detection limit is 0.117μg/L.Keywords 5-Br-PADAP、Mn2+、FAAS、Separation and enrichment、Zn2+