摘要
研究了铂、铑与氯化亚锡和2-巯基苯并噻唑显色反应的二波长、三波长分光光度联合测定法.测定铂λ_1=483nm,λ_2=390nm,佬λ_1=460nm,λ_2=448.5nm,λ_3=437nm.铂、铑含量的线性范围和各自存在的允许量分别为0～6μg/ml和1∶5.方法已成功地应用于某些贵金属冶金物料中铂、铑的测定.
The determination of micro amounts of platinum and rhodium in a mixed solution of the both elements has been studied. The their complexes with SnCl_2 and MBT in 1.2M HCl medium are extracted by EtAc. The results indicate that the determination of platinum or rhodium with ratio to be 5∶1 or 1∶5 from extraction solution is possible. The measuring wavelength for Pt and Rh are 390 nm and 448.5 nm respectively, and the reference wavelengths are 483 nm and 460 nm, 437 nm respectively. The determination range for them is 1～6μg/ml. This method has been used to analyze Pt and Rh in some metallurgical samples.
出处
《贵金属》
CAS
CSCD
北大核心
1989年第2期34-37,共4页
Precious Metals
关键词
分光光度法
铂
铑
测定
Platinum
Rhodium
Spectrophotometry
Micro-analysis
