摘要
本文研究了用DDTC-聚氨酯泡沫塑料分离富集、火焰原子吸收法测定高纯稀土中微量铜的新方法。试验了pH值、DDTC和KSCN浓度、稀土含量等对泡沫塑料吸附铜的影响及泡沫塑料的吸附能力。吸附率在97％以上,用HNO_3-丙酮洗脱,铜的测定灵敏度达0.06μg/ME/1％吸收。用该法进行实样分析,结果令人满意。
In this paper, it has been investigated the new detective method of Cu by flame atomic absorption spcctrophotemetry using DDTC-polyurethanc foam for separarion and preconcentration.The effects of pH, concentration of DDTC and KSCN, amounts of rare-earth on sepapavation and prcconccntralion of Cu and the adsorption capacities of polyurethane have been investigated.Copper was elutcd from foams using HNO_3-acetonc.The sensitivity of detecting Cu is 0.06μg/ml/1% absorption.Analytical results of Cu in sampc of highly pure-earth is successful with this method.
出处
《江西师范大学学报（自然科学版）》
CAS
1990年第3期31-34,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
关键词
稀土分析
铜
测定
吸收光度法
copper
atomic absorption
spectroscopy method
