石墨炉原子吸收光谱分析中的铋原子化机理研究  

Study on the atomization mechanism of Bi by graphite furnace atomic absorption spectrometry

作　　者：刘丹[1] 李晖[1] 庞国伟[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《化学研究与应用》2007年第11期1264-1267,共4页Chemical Research and Application

摘　　要：The proposed method was studied with NiNO3,PdCl2,PdCl2-NiNO3 or PdCl2-Mg(NO3)2 as chemical modifier.The bismuth solution modified by the addition of palladium chloride is found to be better than the other three chemical modifier.The result shows that temperature is increased by 300℃ after the addition of PdCl2.By XRD and EXD,we also studied the atomization mechanism of Bi with PdCl2 as chemical modifier in this experiment.It is probable that the chemical modifier catalyzes and reduces the atomization of Bi regarding as activated center.The proposed method was studied with NiNO3 ,PdCl2 ,PdCl2 -NiNO3 or PdCl2 -Mg（ NO3 ）2 as chemical modifier. The bismuth solution modified by the addition of palladium chloride is found to be better than the other three chemical modifier. The result shows that temperature is increased by 300℃ after the addition of PdCl2. By XRD and EXD, we also studied the atomization mechanism of Bi with PdCl2 as chemical modifier in this experiment. It is probable that the chemical modifier catalyzes and reduces the atomization of Bi regarding as activated center.

关 键 词：石墨炉原子吸收光谱法 铋 化学改进剂 原子化机理 

分 类 号：O657.31[理学—分析化学]