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Study on the Spectrophotometric Determination of Rare Earths with a New Chromogenic Reagent Dibromo-p-methyl-chlorosulfonazo(DBMCSA)
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作者 Guo Zhen FANG Jiao PAN +1 位作者 wei liang ahou Bu Lu XU(Deparment of Chemistry.East China Normal University3663 Zhongshan Road(N), Shanghai 200062) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第10期851-854,共4页
A new method for the determination of cerium subgroup rare earths was studied and reported ill this paper. It was found that cerium subgroup rare earth elements react with DBMCSA in 0.6 mol/L hydrochloric acid medium ... A new method for the determination of cerium subgroup rare earths was studied and reported ill this paper. It was found that cerium subgroup rare earth elements react with DBMCSA in 0.6 mol/L hydrochloric acid medium to form stable blue complexes. The absorbances of equal amounts of cerium subgroup rare earths are close to each other at their maximum adsorptive wavelength (641 nm). Beer's law is obeyed for 0-20 mu g of I ars earths in 25 mi of solution. The method has been applied to the determination of the total amount of cerium subgroup rare earths in steel and cast iron samples with satisfactory results. 展开更多
关键词 spectrophotometric determination rare earths dibromo-p-methyl-chlorosulfonazo (DBMCSA)
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