黄原酯棉富集—GFAAS法测定痕量铟的研究

Study on enrichment of trace indium with cotton cellulose xanthate and determination by GFAAS

研究了黄原酯棉（CCX）富集痕量In（Ⅲ）的条件，并用GFAAS测定．结果表明，在pH=5．0时，黄原酯棉能定量富集痕量In（Ⅲ）．其饱和吸附量为433μg／g．吸附的In（Ⅲ）可被10mL 0．05mol／L的HNO3定量洗脱，本法用于水样、人工合成铝基和铅基样品中痕量In（Ⅲ）的富集和测定，回收率为97．4％～103．6%．

The factors for enrichment of trace indium With Cotton Cellulose Xanthate （CCX） were investigated and determined indium by GFAAS . The results showed that the Cotton Cellulose Xanthate can enrich In（ Ⅲ） quantitatively at pH=5.0 and the saturated capacity was 433 μg/g , The loaded In（ Ⅲ ） was eluted quantitatively by 10 mL 0.05 mol/L HNO3. The method has been used to enrichment and determination of trace In （ Ⅲ ） in water samples, artificial aluminium samples and artificial lead samples. The recovery was in the rang of 97.4%～103.6%.