摘要
本文提出用三溴偶氮胂显色剂在ＥＤＴＡ－Ｚｎ存在下酸性介质中光度测定磷肥中稀土总量的方法。对三种磷肥样品实测结果表明，本法较简便、灵敏度高、选择性好，与ＰＭＢＰ－苯萃取分离—光度法测定结果基本一致。
s: It has been reported that in the acid solution and in the presence if EDTA-Zn, the total rare earth in phosphate fertilizer can be precisely determined by the spectrophotometry with tribromoarsenazo. Three phosphate fertilizer samples were analyzed by this method and results is good agreement with those by using the extraction-photometric method with PMBP-benzene. The experimental results showed that this method had the characteristics of high sensitivity, excellent selectivity, and convenience.
出处
《分析科学学报》
CAS
CSCD
1994年第4期60-62,共3页
Journal of Analytical Science
关键词
三溴偶氮胂
光度法
磷肥
稀土
Tribromoarsenazo, Phosphate fertilizer, Spectrophotometry, Rare earth
