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- W2092177851 abstract "Kováts retention indices (I) of C1–C8 aldehydes and ketones and their 2,4-dinitrophenylhydrazones (DNPHs) were determined. The temperature gradient of the retention indices of keto hydrazones is higher than that of aldehyde hydrazones, hence the separation of certain co-eluting hydrazones is possible by changing the elution temperature. The retention index difference between the E- and Z-isomers increases with increasing asymmetry in the groupss attached to the hydrazo carbon atom. The slope a in the equation IDNPH = aIoxo + b is near unity for not heavily branched aldehyde DNPHs, whereas for keto E-isomers it is leess than unity and changes with the structure." @default.
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- W2092177851 date "1995-02-01" @default.
- W2092177851 modified "2023-10-18" @default.
- W2092177851 title "Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones" @default.
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- W2092177851 doi "https://doi.org/10.1016/0021-9673(94)01019-b" @default.
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