原子能科学技术2016，Vol.50Issue(10)：1741-1747,7.DOI:10.7538/yzk.2016.50.10.1741
90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究
Adsorption of 90 Sr on SuperLig ® 620 Solid Phase Extraction Beads
宋志君 1张生栋 1丁有钱 1张积桥1
作者信息
- 1. 中国原子能科学研究院，北京 102413
- 折叠
摘要
Abstract
For setting a procedure of separating 90 Sr in aqueous using SuperLig ® 620 , the performance of SuperLig ® 620 solid phase extraction beads for the adsorption of strontium in aqueous solution was studied .The influences of contact time ,nitric acid concentration ,strontium carrier and ammonium citrate concentration on distribution coefficient Kd were studied .The Kd is more than 1 000 mL/g when contact time is longer than 30 min in 0.1 mol/L HNO3 .The resin can not adsorb any other radionuclides except 133 Ba w hen c(H+ )> 1 mmol/L .90 Sr and 133 Ba can be eluted respectively using different concentrations of ammonium citrate .Based on the results ,a separation proce‐dure of 90 Sr in environmental water samples using SuperLig ® 620 solid phase extraction beads was presented .The optimal separation was found using a 0.1 mol/L HNO3 load solution with a 10Vc 0.1 mol/L HNO3 to wash potential interferences .Then 90Sr was <br> eluted using 9Vc 0.1 mol/L ammonium citrate . The yield of strontium is more than 99% ,and the decontamination factor is more than 3 × 103 .关键词
SuperLig ® 620固相萃取颗粒/90Sr/吸附性能Key words
SuperLig ® 620 solid phase extraction beads/90 Sr/adsorption分类
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宋志君,张生栋,丁有钱,张积桥..90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究[J].原子能科学技术,2016,50(10):1741-1747,7.
