Flat-bed chromatography on impregnated layers

Grassini-Strazza, G.; Carunchio, V.; Girelli, Anna Maria

doi:10.1016/s0021-9673(01)84615-x

Cited by 16 publications

(2 citation statements)

References 264 publications

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“…Silver(I) is able to form kinetically labile complexes with arene- and vinyl-containing organic molecules. A number of applications from analytical chromatography to membrane technology have made use of this characteristic. Experimental and computational data on small molecules show that silver binds to alkenes and arenes in an η 2 or η 1 mode, gas-phase bond dissociation energies being in the area of 30−40 kcal mol -1 . , Canty and Colton showed that ESI-MS can be used successfully to investigate species formed by alkene and arene complexation of silver(I) …”

Section: Introductionmentioning

confidence: 99%

Enhanced Ionization in Electrospray Ionization Mass Spectrometry of Labile End-Group-Containing Polystyrenes Using Silver(I) Tetrafluoroborate as Doping Salt

et al. 2008

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The use of silver tetrafluoroborate as a doping salt to achieve efficient and soft desorption/ionization of labile end-group-carrying polystyrene during electrospray ionization is demonstrated. Polystyrene carrying a dithioester end group prepared via reversible addition fragmentation chain transfer (RAFT) chemistry (using the RAFT agent cumyl phenyldithioacetate) as well as a commercial polymer standard prepared by anionic polymerization serve as model compounds. By employing silver tetrafluoroborate as ionization agent, an increase in ion count of more than one order of magnitude was achieved compared to ionization with sodium iodide. Little loss of the end group occurred via elimination of the dithioacid to yield vinyl-terminated polymer. A possible mechanism is given for catalysis of the cleavage reaction in the presence of silver salts. Side-product formation due to thermal or collision induced loss of the dithioester was kept at a minimum under optimized source conditions. Thus, we introduce a novel soft ionization protocol for polystyrenes, which are often difficult to ionize.

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Section: Introductionmentioning

confidence: 99%

Enhanced Ionization in Electrospray Ionization Mass Spectrometry of Labile End-Group-Containing Polystyrenes Using Silver(I) Tetrafluoroborate as Doping Salt

et al. 2008

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“…Trace analysis of vitamin-B complex becomes indispensable as it is the monitor of the water soluble group. 12 TLC resolution of constituents of vitamin-B complex 13-15 on impregnated plates have also been described by some workers. Deficiency of these may lead to diseases such as beri-beri, macrocyclic anaemia, chellosis, and pernicious anaemia.…”

Section: Introductionmentioning

confidence: 91%

Improved Separation of Vitamin B Complex and Folic Acid Using Some New Solvent Systems and Impregnated TLC

Bhushan

Parshad

1999

Journal of Liquid Chromatography & Related Technologies

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TLC separation of vitamins of the 'B' complex group and folic acid has been achieved on plates impregnated with different transition metal ions. The metal ions used were Mn ++ , Fe ++ , Co ++ , Ni ++ , Cu ++ , Zn ++ and Hg ++ . hR f values for all the vitamins, using six new solvent systems, worked out for the purpose, for each of the four different concentrations of each metal ion have been reported. The results have been discussed for each metal ion compared and the best conditions of separation have been identified.

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Sol‐gel preparation and properties of Alumina adsorbents for gas separation

Deng

1995

AIChE Journal

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Flat-bed chromatography on impregnated layers

Cited by 16 publications

References 264 publications

Enhanced Ionization in Electrospray Ionization Mass Spectrometry of Labile End-Group-Containing Polystyrenes Using Silver(I) Tetrafluoroborate as Doping Salt

Enhanced Ionization in Electrospray Ionization Mass Spectrometry of Labile End-Group-Containing Polystyrenes Using Silver(I) Tetrafluoroborate as Doping Salt

Improved Separation of Vitamin B Complex and Folic Acid Using Some New Solvent Systems and Impregnated TLC

Sol‐gel preparation and properties of Alumina adsorbents for gas separation

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