摘要
研究了以1mol·L-1NH4SCN为介质,甲基异丁基甲酮(MIBK)萃取,4mol·L-1硝酸反萃取火焰原子吸收光谱水相测定微量钻的方法.钴量在0-5mg·L-1范围内呈良好的线性关系,检出限为0.070mg·L-1,相对标准偏差为1.17%.该方法适用于腺苷钴胺片中微量钻的测定.
Determination of micro -amounts of cobalt has been studied by methyl isobutyl ketone (MIBK) extraction procedure in 1 mol.L- 1 WSCN meditim folfowed by 4 mel' L-1 nitric acid successive extraction, and analysesed by flame atomic absorption spectrometry.The analytical calibration curve for cobalt shows execllent linearity in the rmge of 0 ~ 5 mg. L-1 with RSD of 1. 17%. The detection lindt is 0.070mg. L- 1. This metLhed is sugrsted for the detendnation of cohalt in cobnide Iablets.
出处
《湖北大学学报(自然科学版)》
CAS
1999年第4期373-375,共3页
Journal of Hubei University:Natural Science
基金
湖北大学青年基金
关键词
钴
反萃取
原子吸收光谱
维生素B12
腺苷钴铵片
Cobamamide tablets
Micro-amounts cobalt
Successive extraction
Flame atomic absorption spectrometry