Determination of Lead in Rubber Nipple by Graphite Furnace Atomic Absorption Spectrometry

The Pb in rubber nipple was determined by graphite furnace atomic absorption spectrometry.The best conditions were confirmed by the investigation of matrix modifier,ashing temperature,and atomization temperature.Through a series of experiments determined the optimum conditions selected,the results showed that the detection limit was 0.18 μg/L,the average recoveries of 94.2% to 107.5%,and relative standard deviation of 3.86%(n=5).The method was simple,fast,reproducible,high sensitive and accurate.