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Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones

(1995) JOURNAL OF CHROMATOGRAPHY A. 693(1). p.181-185
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Abstract
Kovats retention indices (I) of C-1-C-8 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 groups attached to the hydrate carbon atom. The slope a in the equation I-DNPH = aI(oxo), + b is near unity for not heavily branched aldehyde DNPHs, whereas for keto E-isomers it is less than unity and changes with the structure.
Keywords
ALKANES, INDEXES, FILTERS, FORMALDEHYDE, AIR, ALDEHYDES, VOLATILE CARBONYL-COMPOUNDS, PERFORMANCE LIQUID-CHROMATOGRAPHY

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MLA
Görgényi, Miklós, et al. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A, vol. 693, no. 1, 1995, pp. 181–85, doi:10.1016/0021-9673(94)01019-B.
APA
Görgényi, M., Van Langenhove, H., & Király, Z. (1995). Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones. JOURNAL OF CHROMATOGRAPHY A, 693(1), 181–185. https://doi.org/10.1016/0021-9673(94)01019-B
Chicago author-date
Görgényi, Miklós, Herman Van Langenhove, and Zoltán Király. 1995. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A 693 (1): 181–85. https://doi.org/10.1016/0021-9673(94)01019-B.
Chicago author-date (all authors)
Görgényi, Miklós, Herman Van Langenhove, and Zoltán Király. 1995. “Prediction of Gas Chromatographic Retention Indices of 2,4-Dinitrophenylhydrazones.” JOURNAL OF CHROMATOGRAPHY A 693 (1): 181–185. doi:10.1016/0021-9673(94)01019-B.
Vancouver
1.
Görgényi M, Van Langenhove H, Király Z. Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones. JOURNAL OF CHROMATOGRAPHY A. 1995;693(1):181–5.
IEEE
[1]
M. Görgényi, H. Van Langenhove, and Z. Király, “Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones,” JOURNAL OF CHROMATOGRAPHY A, vol. 693, no. 1, pp. 181–185, 1995.
@article{192564,
  abstract     = {{Kovats retention indices (I) of C-1-C-8 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 groups attached to the hydrate carbon atom. The slope a in the equation I-DNPH = aI(oxo), + b is near unity for not heavily branched aldehyde DNPHs, whereas for keto E-isomers it is less than unity and changes with the structure.}},
  author       = {{Görgényi, Miklós and Van Langenhove, Herman and Király, Zoltán}},
  issn         = {{0021-9673}},
  journal      = {{JOURNAL OF CHROMATOGRAPHY A}},
  keywords     = {{ALKANES,INDEXES,FILTERS,FORMALDEHYDE,AIR,ALDEHYDES,VOLATILE CARBONYL-COMPOUNDS,PERFORMANCE LIQUID-CHROMATOGRAPHY}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{181--185}},
  title        = {{Prediction of gas chromatographic retention indices of 2,4-dinitrophenylhydrazones}},
  url          = {{http://doi.org/10.1016/0021-9673(94)01019-B}},
  volume       = {{693}},
  year         = {{1995}},
}

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