摘要
用离子交换比色法￣［３，４］直接测定牧草中稀土总量，把形成的ＴＢＡ－稀土络合物富集在强碱性的阴离子交换树脂上￣［４］，显色与高倍率浓集同时进行，具有比溶液光度法更高的灵敏度．对ＴＢＡ－稀土络合物形成的最佳条件作了较详细的研究．
n the medium of HCl,rare earth forms binary complex with tribromoarsenazo(TBA)whichcan be absorbed by the strong basic anibn resin. And this resin phase can be used for the deter-mintion of the trace Rare Earth in herbage. The analytical results are satisfactory.The Beer's lawis obeyed in the range f 0～15μg/250ml for the determination of rare earth.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1995年第4期432-435,共4页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自然科学基金
