| Study on the Spectrophotometric Determination of Rare Earths with a New Chromogenic Reagent Dibromo-p-methyl-chlorosulfonazo(DBMCSA) |
| |
| 作者姓名： | Guo Zhen FANG Jiao PAN Wei Liang AHOU Bu Lu XU |
| |
| 作者单位： | Guo Zhen FANG;Jiao PAN; Wei Liang AHOU;Bu Lu XU(Deparment of Chemistry.East China Normal University3663 Zhongshan Road(N)，Shanghai 200062) |
| |
| 摘 要： | IntroductionAbstract:Anewmethodforthedeterminationofceriumsubgrouprareearthswasstudiedandreportedinthispaper.ItwasfoundthaiceriumsubgrouprareearthelementsreactwithDBMCSAin0.6mol/Lhydrochloricacidmediumtol'ormstablebluecomplexes.Theabsorbancesofequalamountsofceriumsubgrouprareearthsareclosetoeachotherattheirmaximumadsorptivewavelength(641"m).Beer'slawisobeyedfor0-20igofrareearthsin25mlofsolution.Themethodhasbeenappliedtothedeterminationofthetotalamountofceriumsubgrouprareearthsinsteelandcas…
|
Study on the Spectrophotometric Determination of Rare Earths with a New Chromogenic Reagent Dibromo-p-methyl-chlorosulfonazo(DBMCSA) |
| |
| Guo Zhen FANG,Jiao PAN, Wei Liang AHOU,Bu Lu XU.Study on the Spectrophotometric Determination of Rare Earths with a New Chromogenic Reagent Dibromo-p-methyl-chlorosulfonazo(DBMCSA)[J].Chinese Chemical Letters,1999(10). |
| |
| Authors: | Guo Zhen FANG Jiao PAN Wei Liang AHOU Bu Lu XU |
| |
| Abstract: | A new method for the determination of cerium subgroup rare earths was studied and reported in this paper.It was found that cerium subgroup rate earth elements react with DBMCSA in 0.6 mol/L Hydrochloric acid medium to form stable blue complexes.Theabsorbances of equal amounts of cerium subgroup rare earths are close to each other at theirmaximum adsorptive wavelength (641 nm).Beer's law is ohbeyed for 0-20 g of rare earths in 25ml of solution The method has been applied to the determination of the total amount of ceriumsubgroup rate earths in steel and cast iron samples with satisfactory results. |
| |
| Keywords: | Spectrophotometric detemination rare earths dibromo-p-methyl-chlorosulfonazo(DBMCSA) |
| 本文献已被 CNKI 等数据库收录！ |
