摘要
本文研究了二溴硝基偶氮氯膦(D3NCPA)与铋的显色反应.在0.02～1.54mol/L HClO_4的酸度范围内,铋与该试剂形成组成比为1:2的紫红色络合物,最大吸收峰在620nm处,摩尔吸光系数为6,44×10~4.铋量在0～60μg/25ml范围内符合比尔定津,本法可测定铜合金中微量铋.
The colour reaction of bismuth with DBNCPA has been investigated. The absorption peak of the complex appears at 620nm, e=6.44×104. The molar ratio of Bi to DBNCPA in the complex is 1 : 2. Beer's law is obeyed in the bismuth concentration range from 0 to 60ug/25ml,This method has been developed to determine bismuth in copper alloys.
出处
《冶金分析》
CAS
CSCD
北大核心
1991年第2期14-16,共3页
Metallurgical Analysis
