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Cerium oxide (CeO 2 ) was tested as a packing material in liquid chromatography for the separation of C 60 and C 70 fullerenes. The separation of C 60 and C 70 fullerenes could be achieved within 20 min by using puren -hexane as the mobile phase. Furthermore, some higher fullerenes could also be separated in less than 40 min. The peak...
An accurate high performance liquid chromatography method for the separation and quantification of a solution mixture of nitrazepam, diazepam and medazepam and medazepam was developed. The modified simplex program has been utilized for the optimization of the chemical and chromatographic parameters using the chromatographic response function as the quality criterion and a photodiode array as a detector...
A method employing HPLC with electrochemical detection for the rapid and simultaneous determination of vitamins A, D 3 and E is described. The method uses a C-18 reverse phase column and 2.5 mM HAcO-NaAcO in methanol-water (99:1, v/v) solution as the mobile phase. The compounds are quantified using amperometric detection with a glassy carbon electrode at a potential of + 1300 mV (vs. Ag/AgCl)...
Normal phase liquid chromatography combined with particle beam mass spectrometry has been applied to the analysis of fluconazole, an anti-fungal agent, [2-(2,4-difluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)-propan-2-ol] and a related intermediate, UK-51060 [2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-ethan-2-one]. Electron ionisation and chemical ionisation have been investigated in combination...
A new, simple, precise, rapid and stability indicating RP-HPLC method has been developed for the simultaneous determination of mebendazole and pyrantel pamoate from tablets. Chromatography was carried out on a Shodex C8 column using a mixture of 0.05 M monobasic sodium phosphate: acetonitrile: triethylamine (60:40:1.5, v/v), adjusted to pH 6.8 with phosphoric acid. Detection was carried out at 290...
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