摘要
本文研究用２－（５－溴－吡啶偶氮）－５－二乙氨基酚（５－Ｂｒ－ＰＡＤＡＰ）作显色剂双波长分光光度法同时测定微量铜和钴的反应条件。在ｐＨ５．０－６．０酸度范围内选择测定铜的波长对为５４５／１５６８ｎｍ；测定钻的波长对为５８５／４９５ｎｍ。于５０ｍｌ溶液中，铜、钴含量分别在０－０．５６ｕｇ／ｍｌ和０－０。４８ｕｇ／ｍｌ内符合比尔定律。方法用于岩石矿物样品的测定效果良好。
A sensitive method for simultaneous determination spectrophotometry with 5-Br-PADAP has been established.The precise method is used for theselection of wavelength pairs.The measuring wavelength and reference wavelengh for copper are 545 nm and 568 nm,and for cobalt are 585 nm and495 nm.Thecalibration curves are linear in the concentration range of Cu(Ⅱ)0-0.56ug/ml and Co(Ⅱ)0-0.48ug/ml.The proposed method has been applied to the analysis of samples, with satisfatory results.
出处
《矿物岩石》
CAS
CSCD
1994年第2期102-104,共3页
Mineralogy and Petrology
关键词
铜
钴
显色剂
分光光度法
dual-wavelength,spectrophotometry,Cu(Ⅱ),5-Br-PADAP
