Determination of Pb and Cd in honeysuckles by graphite furnace atomic absorption spectrometry

Using NH4H2PO4 as matrix modifier,the Pb and Cd were determined by graphite furnace atomic absorption spectrometry.The best conditions were confirmed by the investigation of matrix modifier,ashing temperature,atomization temperature and inferences of other metals.The method is simple,fast,reproducible,high sensitive and accurate.The detection limit of Pb is 0.268 μg/L,Cd is 0.013 μg/L.Recoveries are in the range of 85%~110%.