Production of ammonium sulfate doubly labeled with the 15N and 34S stable isotopes

Química Nova

Maximo, Everaldo¹  Bendassolli, José Albertino¹  Rossete, Alexssandra Luiza Rodrigues Molina¹  Trivelin, Paulo César Ocheuze¹  Oliveira, Claudinéia Raquel de¹  Prestes, Clelber Vieira¹  Universidade de São Paulo, Piracicaba¹ 

关键词: nitrogen;    sulfur;    ion exchange.;   

DOI  :  10.1590/S0100-40422005000200008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The purpose of this work was the production of ammonium sulfate double labeled with 15N and 34S ((15NH4)234SO4)), employing the ion exchange technique in two different processes. The first one was carried out using Na234SO4 and (15NH4)2SO4 previously enriched. It was possible to obtain about 54g of (15NH4)234SO4 from 70.0g of Na234SO4 and 64.2g of (15NH4)2SO4 . The second method involved the production of H234SO4, by ion exchange, and its subsequent reaction with 15NH3(aq), using a distillation system, to yield 58 g of (15NH4)234SO4 from 43.1 g of H234SO4.

【 授权许可】

Unknown