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Preconcentration of Silver on PCON and its Determination by Slurry Graphite Furnace Atomic Absorption Spectrometry

LIANG Yong,TANG You wen  and WANG Chao yang (Department of Chemistry,South China Normal University,Guangzhou 510631),Fenxi Shiyanshi,1999,18(5):41~43  
This paper reports the conditions and preconcentration ability of PCON to Ag.The preconcentration is achieved by mixing 10mg of PCON with 50mL of an Ag containing solution and subsequent separation by centrifugation.The PCON pellet is then suspended in 1mL of solution and analysed in the form of slurry by GFAAS.It is shown that,after the PCON is rinsed with 5% HNO 3,the absorption extraction efficiency is 98.8±1 0% in the optimum pH range of 11.0±0 2.The method has been used in the determination of trace Ag in tap water.
【Fund】: 广东省科委和广东省高教厅资助
【CateGory Index】: O655.11
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