原子吸收光谱法测定矿渣、烟灰中的微量铟

Determination of Indium in Scoria and Cigaretteash by AAS

试样用盐酸、硝酸溶解后,加氢溴酸挥发除出砷、锡、锑、大部分铋等元素,在5.0mol/LHBr介质中,铟以{InBr4}-形式被乙酸丁酯萃取与大量共存元素分离,再用HCl(1+1)反萃取分离干扰元素后用原子吸收光谱法测定。

The sample is dissolved by Hydroch Acid and Nitric Acid, acceding to Hydrobromic Acid in order to eliminate Arsenic, Stannum, Stibium and a majority of Bismuth elements etc, in medium of 5.0 mol/L Hydrobromic Acid, Indium in form of {InBr4}^- is extracted by Acetic Acid and separated from a lot of Concomitance elements. Indium is determinated by AAS after separating the disturb elements with Hydrochloric Acid opposition of extraction.