氢化物发生-原子吸收光谱法快速测定锌电解液中痕量锑  

Rapid Determination of Trace Antimony in Zinc Electrolytic Solutions by Hydride Generation Atomic Absorption Spectrophotometry

作　　者：张明浩[1] 周春山[1] 邓飞跃[1] 

机构地区：[1]中南工业大学化学化工学院,长沙410083

出　　处：《分析试验室》2000年第5期12-14,共3页Chinese Journal of Analysis Laboratory

基　　金：湖南省教委基金资助课题!( 98C118)

摘　　要：在盐酸介质中 ,Sb( )用碘化钾和抗坏血酸还原成 Sb( )后 ,再与强还原剂硼氢化钾反应生成氢化锑。该氢化物用载气氮送入原子化系统原子化以测定锑。锑最大吸收波长为 2 1 7.6nm,在 0 .5～ 55ng·m L-1范围 ,锑浓度与吸光度呈线性关系 ,检出限为 2 .1× 1 0 -9mol· L-1。In the medium of hydrochloric acid,antimony(Ⅴ) was reduced to antimony(Ⅲ) by potassium iodide and ascorbic acid.Antimony(Ⅲ) was then reacted with a strong reductant,potassium borohydride,to form antimony hydride,which was carried into a quartz atomization system by nitrogen carrier gas for determination of antimony by AAS.The wavelength of maximum absorption is 217.6 nm. There is good linear relation ship between antimony concentration and absorbance in the range of 0.5～55 ng·mL -1 ,with detection limit of 2.1×10 -9 mol·L -1 .Without any pretreatment,the method was directly used for the determination of trace antimony in zinc electrolytic solutions.

关 键 词：原子吸收光谱法 锌电解液 锑 痕量分析 

分 类 号：TF813.032[冶金工程—有色金属冶金] O657.31[理学—分析化学]