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: 624 Fang Guochun. REN Ling. Following Chang Yang. Analytical Chemistry, 1994.22 (5) 5335 Fang Guochun. Wang Hongxiang Li Guangzu, Min. Analysis Laboratory. 1994,13 (4): 41 414 Analytical Chemistry Volume 24 DeterminationofTraceCobaltbyHighSensitivityCatalyticSpectrophotometryLongWenqlng ', qiuChengquan (Depar ~ raemofChemistry.Ji mouth Teacher5College · 3ian343009) AbstractAcatalyticspectrophotometricmethodforthedeterminationoftraceamountofCo (1) haeendeveloped. ThemethodiasedonthecatalyticeffeCtofCo (1) ontheOX-idationof5bromosalicylfluoronewithhydrogenperoxideinabasicmedium. VitaminCisusedtostopthereaction. Thereagentconcentrationandinterferingionsonreactionratehavebeenstudied. At25 ℃, thelinearrangeofdeterminationis2.5 ~ 8Ong/Lforcobalt. Thedetectionlimitis1.1 × 10. g / L. Therelativestandarddeviationis2.8. Theappa-rantactivationenergyofcatalyticreactionis60.38kJ/too1. ThemethodhaeenusedtOdeterminetracecobaltinvitaminBl2, humanhairandteawithsatisfactoryresults. KeywordsCatalyticspectrophotometry ,5-bromosalicylfluorone, hydrogenperoxide, cobalt (Recdved26April1995Iaccepted13Nomember1995) light of the Fifth National Conference Call for analysis by the Committee of the Chinese Chemical Society, Biophysical Society of China and the Chinese Committee of Photobiology Physics Society jointly organized the fifth light session of the National Conference is scheduled for luminescence 1o April 1996, held in Xi'an, the matter will now notify the Call for Papers is as follows: First, the essay within the customer 1. Chemiluminescence (chemiluminescence, bioluminescence, bio-super-weak luminescence whip, cell luminescence, fluorescence and phosphorescence analysis) of the mechanism and new methods, new technology. 2. Luminescence in all ten areas of application (including immunoassay to measure free radicals and antioxidants,uggs nederland, the report group, genetic markers, molecular hybridization, environmental toxicology, etc.). 3. Luminescence light of the new equipment and reagents, the new kit in the research and development. Second, the essay requirements 1. Candidates should be in paper publications and academic meetings abroad,Tory Burch Shoes, unpublished research results. . 2. Please apply thesis about 1,500 buildings a detailed summary of the papers in duplicate, together with the recommendation of the unit in April 15,ralph lauren outlet, 1996 Send Xi'an, Shaanxi Normal University Zhang Jingui receive (Postal Code 710062). Please use A4 paper abstracts 4 Yu printing. 3. Please contact the Department of papers out the name, full address and postal code units. 4. Employed by the expert review papers, papers and meetings will be notified of specific matters. Accepted papers will charge a publication fee. Pray for equipment manufacturers to facilitate the introduction sub-products,mbt shoes on sale, the meeting will be held during the light of the instruments and other analytical equipment exhibition, welcomed the units of participation in this exhibition. Phone (029) a 5261200--21576 light of the Fifth National Conference to raise the academic basket Fen Group (School of Chemistry Li on behalf of the chapter) More articles related to topics： mac cosmetics wholesale Student teachers have the tory burch outlet Economic theory and anti-dumping tory burch sale Water-soluble phosphine complexes |
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