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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 40 (1995), S. 463-466 
    ISSN: 1612-1112
    Keywords: Two-dimensional TLC ; Mobile phase optimization ; Pesticide separations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A computer-assisted method is presented for optimization of two mobile phase selection for separation of a mixture of eight pesticides in two-dimensional TLC. Optimization of the separation over the experimental region is based on two special polynomial estimations from preliminary runs of two groups. Using D (distance of two spots) as the selection criterion with a two factor statistical scanning technique excellent agreement is obtained between predicted and experimental results.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 49 (1999), S. 444-448 
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; O-alkyl, O-(1-methylthioethylideneamino) phosphoramidates ; Quantitative structure-retention relationship (QSRR) ; Reversed-phase LC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary By using factor analysis, cluster analysis and multiple linear regression methods, two parameters, FHF and ECCR, were selected from eight solute-related structure parameters as showing the best correlation with retention data. The relationship between the retention data (k) and these two structure parameters were established for ten O-alkyl, O-(1-methylthioethylideneamino) phosphoramidate compounds under the experimental conditions studied. Retention data (k) for six other compounds that have a high correlation with structure parameters were predicted using these QSRR equations. The system was evaluated by comparing the experimentalk values with the predicted ones. Good agreement was obtained between the experimental and predictedk values.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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